Advances in Mechanical Design

Name: Advances in Mechanical Design | The Proceedings of the 2023 International Conference on Mechanical Design (ICMD 2023)
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The Proceedings of the 2023 International Conference on Mechanical Design (ICMD 2023)

Jianrong Tan Yu Liu Hong-Zhong Huang Jingjun Yu Zequn Wang(Editor)

Springer (Publisher)

1st Edition

Published on 19. June 2024

XXX, 2771 pages

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978-981-97-0922-9 (ISBN)

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Jianrong Tan is Academician of the Chinese Academy of Engineering and Full Professor of Mechanical Engineering, Zhejiang University, China. He received his M.S. degree in Mechanical Engineering from Huazhong University of Science and Technology and his Ph.D. in Applied Mathematics from Zhejiang University. He is currently Full Professor at the School of Mechanical Engineering, Zhejiang University, and Vice Chairman of the Mechanical Engineering Society of China. His current research interests include theory of mechanical design, digital design and manufacturing, and CAD&CG. He has published eight books and authored or coauthored over 140 papers and invited presentations for international conferences and symposia. He has received the 2nd place prize in China's national award for science and technology progress four times (2005, 2007, 2011, and 2012) and received the 1st place prize in Zhejiang province's award for scientific and technological progress seven times.
YuLiu is the Dean and Full Professor of the School of Mechanical and Electrical Engineering at the University of Electronic Science and Technology of China. He received his PhD degree in Mechatronics Engineering from the University of Electronic Science and Technology of China. He was a Visiting Pre-doctoral Fellow in the Department of Mechanical Engineering at Northwestern University, Evanston, U.S.A. from 2008 to 2010, and a Postdoctoral Research Fellow in the Department of Mechanical Engineering, at the University of Alberta, Edmonton, Canada from 2012 to 2013. He has published over 90 peer-reviewed papers in international journals, such as IEEE Transactions on Reliability, IISE Transactions, Naval Research Logistics, European Journal of Operational Research. He has been recognized as one of the Most Cited Chinese Researchers by Elsevier since 2016 and the World's Top 2% Scientists since 2020. He was a recipient of the National Science Fund for Excellent Young Scholars, IISE QCRE Teaching Award, Dengjiaxian Youth Science and Technology Award, Youth Science and Technology Award of Operations Research Society of China, Youth Science and Technology Award of Sichuan Province. He serves as an Associate Editor of IISE Transactions and IEEE Transactions on Reliability and in the editorial board of several prestigious international journals, such as, Reliability Engineering and System Safety, Quality and Reliability Engineering International. He serves as the chair of IEEE Reliability Society Chengdu Section Chapter, the Vice President of the Reliability Committee of Operations Research Society of China. He is an ISEAM Fellow and a senior member of IISE and IEEE.
Professor Hong-Zhong Huang, PhD. Hong-Zhong Huang received the B.S. degree from Wuhan University, Wuhan, China, in 1983, the M.S. degree from Chongqing University, Chongqing, China, in 1988, and the Ph.D. degree from Shanghai Jiao Tong University, Shanghai, China, in 1999, all in mechanical engineering. He is a Full Professor of Mechanical Engineering with the School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, China. He is also the Director with the Center for System Reliability and Safety, University of Electronic Science and Technology of China. He has held visiting appointments at several universities in the USA, Canada, and Asia. He has authored or coauthored more than 350 journal papers and eight books in the fields of reliability engineering, optimization design. Prof. Huang is also an ISEAM Fellow, a Technical Committee Member of ESRA, a Co-Editor-in-Chief for the International Journal of Reliability and Applications, and an Editorial Board Member of several international journals.

Jingjun YU is a Professor in School of Mechanical Engineering and Automation at Beihang University. He received his Ph. D. degree from Robotics Institute, Beihang University in 2002, the M.S. and B.S. degrees in Mechanical Engineering from Yanshan University in 1998 and 1995, respectively. Since 2004 he become a faculty member of Beihang University. He was a visiting researcher at Kyushu University, Japan in 2005-2006, and a visiting scholar at MIT, USA in 2009-2010. Prof. Yu has published 12 books and over 180 papers in refereed journals and refereed conference proceedings, over 30 authorized patents. His research interests include Design theory of Compliant Mechanisms and Robotics, Precision Machine Design, and Modern Kinematics Geometry. He is now an editor board member of two journals Frontiers of Mechanical Engineering and Chinese Journal of Mechanical Engineering.

Dr. Zequn Wang is a professor in Mechanical Engineering at University of Electronic Science and Technology of China. Dr. Wang received his B.E. in 2006 and M.S. in 2009, both in Mechanical Engineering from the University of Science & Technology Beijing in China. He obtained his doctoral degree in Industrial Engineering at Wichita State University in 2014. Dr. Wang's research is primarily focused on developing advanced machine learning approaches for the reliability-based design under uncertainty and failure diagnostics/prognostics of safety-critical engineered systems. He is a member of Institute of Industrial Engineers (IIE), the American Society of Mechanical Engineers (ASME) and American Institute of Aeronautics and Astronautics (AIAA).

Content

Intro
Organization and Committees
Preface
Contents
Product Innovation Design
Research on Multi-feature Fusion 3D CAD Retrieval Technology Based on Model Segmentation
1 Introduction
2 Construction of Network Models
2.1 Model Segmentation
2.2 Determination of Nodes and Edges
3 Network Information Endowing
3.1 Data Model Establishment
3.2 Node Information Assignment
3.3 Edge Information Assignment
3.4 Weight Determination
4 Similarity Calculation
4.1 Structural Similarity Calculation
4.2 Data Information Similarity
5 Example
6 Conclusion
References
Design and Analysis of Automatic Tightening Device for Non-standard Screw Connection
1 Introduction
2 Overall Structural Design of the Tightening Device
3 Design of the Main Modules of the Device
3.1 Design of the Three-Axis Sliding Structure
3.2 Tighten the Structural Design of the Spindle
3.3 Design of Workpiece Positioning and Clamp Structure
3.4 Design of the Adapter
4 Finite Element Analysis of Important Structures
4.1 Finite Element Analysis of the Gantry Beam of the Tightening Device
4.2 Finite Element Analysis of Z-Axis Slide Plate
4.3 Finite Element Analysis of the Tightening Head
5 Conclusion
References
Study of Influence Factors for Disruptive Innovation in Equipment Manufacturing Enterprises
1 Introduction
2 Methods
2.1 Determination of Influencing Factors
2.2 Hierarchical Modeling
2.3 Weight Calculation for the Influencing Factors
3 Results and Discussion
4 Conclusion
References
Inverse Seeking Method to Find the Force of the Variable Span Outrigger of Truck Crane Based on Analytic Method and Its Algorithm Realization
1 Introduction
2 Calculation Model and Load
2.1 Calculation of Reaction Force of Four Legs
2.2 Calculation of Three Point Support Reaction
3 Programming Design
4 Case Analysis
5 Conclusions
References
Approach of Adaptive Change for Open Architecture Product Based on Axiomatic Design
1 Introduction
2 Customer Personalized Demand Analysis
2.1 Acquisition of Customer Demands
2.2 Customer Requirement Identification
3 Adaptive Change Analysis for Open Architecture Products
4 Open Architecture Can Adapt to Design
5 Case Study
6 Conclusion
References
Research on the Innovative Design of TRIZ Patent Circumvention Based on Basic-Elements
1 Introductory
1.1 The Application of Extenics and TRIZ to Circumvention Design
2 Basic-Element Models and TRIZ Patent Circumvention Design Methods
2.1 System Analysis Process
2.2 Circumventing the Design Process
2.3 Feasibility Determination Process
3 Circumvention Design of Annular Flow Generation Device
3.1 System Analysis Process
3.2 Circumventing the Design Process
3.3 Feasibility Determination Process
4 Conclusion
References
Design and Load Capacity Research of a Novel Roller-Plate CVT
1 Transmission Principle
2 Mathematical Model for Power and Strain
2.1 Torque Transmission Analysis
2.2 Establishment of Stress and Strain Model
3 Establishment of the CVT Model
4 Finite Element Simulation Analysis
5 Conclusion
References
Design Knowledge Graph and User Profiling-Driven Product Innovation Design Problem Solving
1 Introduction
2 Top-Down Hierarchical Construction of Product Conceptual Design KG
2.1 The Expression of Top-Down Hierarchical Structure
2.2 Extraction of Multimodal Product Conceptual Design Knowledge
3 Design Knowledge Graph and User Profiling-Based Personalized Recommendation Model
3.1 User Profile Generation and Knowledge Graph Clustering
3.2 Fusion Strategy of Knowledge Graph and User Profile
4 Case Study
5 Conclusion
References
A Knowledge Graph-Driven Approach for Architecture Design Space Generation and Reduction
1 Introduction
2 Method
2.1 Decision Knowledge Representation
2.2 Knowledge Graph-Based Architecture Design Space Generation
2.3 Reduction of Architecture Design Space
3 Case Study
3.1 DKG Construction
3.2 Architecture Design Space Generating and Reduction
4 Discussion
5 Conclusion
References
Research on the Innovation Process Modeling for the Integration of DCC and Function Trimming
1 Introduction
2 Theoretical Fundamentals
2.1 Design-Centric Complexity (DCC)
2.2 Function Trimming
3 Innovation Process Modeling for the Integration of Design-Centric Complexity and Function Trimming
4 Engineering Case Analysis and Verification
5 Discussion and Conclusion
References
An Analysis Method to Identify the Importance of Technical Parameters for Complex Products
1 Introduction
2 Research Methodology
2.1 Requirement-Performance-Parameter Correlation Model
2.2 The Hesitant Fuzzy Linguistic Preference Relation
2.3 The Importance Conversion Model
2.4 Analysis Method to Identify the Importance of Technical Parameters for Complex Products
3 Case Study
3.1 Determination of Product Requirements
3.2 Establishment of Mapping Relationship
3.3 Determining the Importance of Performances
3.4 Determination of the Importance of Technical Parameters
4 Discussion
4.1 Getting Design Knowledge Through RPPCM
4.2 Ranking Importance by Expert Hesitant Fuzzy Linguistic Preference Relations
5 Conclusions
References
Inter-generational Aging Design of Community Fitness Space and Equipment
1 Introduction
2 Current Status of Community Fitness Spaces and Equipment
3 Analysis of Intergenerational Aging Needs in Community Fitness Products
3.1 Differences
3.2 Commonalities
4 Design Discussion
4.1 Community Fitness Spaces
4.2 Equipment Design
5 Design Implementation
5.1 Equipment Design
5.2 Community Fitness Space Planning
5.3 Color Scheme
6 Conclusion
References
Optimization Method for the Propagation Path of Complex Product Design Change Based on Reinforcement Learning
1 Introduction
2 Method
2.1 Building a Markov Decision Process Model
2.2 Optimization the Path of Design Change Propagation Based on Reinforcement Learning
3 Case Study
4 Conclusions
References
Intelligent Cognitive Artistic Style Recognition Model for Mechanical Design
1 Introduction
2 Human Cognitive Mechanism and Algorithm
3 Methodology
3.1 Image Feature Extraction
3.2 ARNN Visualization
3.3 ARNN Structure Optimization
4 Experiments and Results
5 Conclusion
References
Design Principle and Application for Automotive Wiring Corrugated Pipe Cutting Machine
1 Introduction
2 Design of Automatic Cutting Location Information Fusion Algorithm for Automotive Wire Harness Corrugated Pipes
2.1 Design of Kalman Filter Algorithm
2.2 Improved Kalman Location Algorithm
3 Development of Car Corrugated Pipe for the Automatic Cutting Machine
3.1 Technical Index
3.2 The Mechanical Structural Design of Corrugated Pipe Automatic Cutting Machine
3.3 The Corrugated Pipe Scanning Image Processing
3.4 Dynamic Detection System of Cutting the Corrugated Pipe
3.5 Machine Control System of Cutting the Corrugated Pipe
4 Conclusions
References
Design of Multi-task Scene Image Acquisition System in a Spacecraft Based on TRIZ
1 Introduction
2 TRIZ
2.1 Theoretical Basis
2.2 Conflict Solving Principle
3 Application Example-Innovative Design of Multi-task Scene Image Acquisition System
3.1 Demand and Problem Analysis
3.2 Determination of the Inventive Principles to Solve the Problem
3.3 Innovative Design of Multi-task Scene Image Acquisition System Based on Inventive Principles
4 Conclusion
References
Design and Data Analysis of Muskmelon Sugar Content Detection System
1 Introduction
2 Materials and Methods
2.1 Device and Tools
2.2 Test Materials
2.3 Acoustic Signal Acquisition Method
2.4 Acoustic Testing Principle
2.5 Model Establishment
2.6 Evaluating Indicator
3 Results and Discussions
3.1 Acoustic Signal Analysis
3.2 Principal Component Analysis Results
3.3 All Variable Modeling Results
3.4 Characteristic Variable Modeling Results
3.5 Discussion
4 Conclusions
References
A Human Digital Twin Based Framework for Human-Robot Hand-Over Task Intention Recognition
1 Introduction
2 Proposed Method
2.1 Construction of Human Digital Twin with Multimodal Data
2.2 Multiscale Feature Extraction Based on MSCNN-BiLSTM
2.3 Human-Robot Hand-Over Intention Classification
3 Experiment and Results
4 Conclusion
References
Design and Application of Data-Driven Visualization Platform for Dual Robotic Arms Assembly Process
1 Introduction
2 High-Fidelity Model Building for Assembly Process
2.1 Geometric Static Modeling
2.2 Logical Dynamic Modeling
2.3 Lightweight Treatment
3 Data-Driven Assembly Process Visualization
3.1 Real-Time Data Acquisition Method Based on Socket
3.2 Data Processing Method Based on Cubic Spline Interpolation
3.3 Real-Time Data Display Based on MQTT
3.4 WebGL Technology
3.5 Three.js Engine
3.6 LOD-Based Display Optimization
4 Platform Application
References
An Innovative Design Method with Good Operability and Practicality
1 Preface
2 Method Introduction
3 Application Examples
3.1 Functional Module Grooming
3.2 Technical Unit Searching
3.3 Transplant
3.4 Combination
4 Apply Results
5 Conclusion
References
Product Requirements Mining and Innovative Design Based on Extension Theory Using Online Review Data
1 Preface
2 Overview of the Methodology and Process
3 Case Study
3.1 Data Collection and Preprocessing
3.2 The Product Online Review Hierarchical Model
3.3 Calculation of User Opinion Evaluation Value
3.4 Identification of Product Innovation Requirements
3.5 Divergence Analysis of Product Defect Matter-Elements
3.6 Generating Innovative Design Solutions
4 Conclusion
References
Research on a Novel Analogical Reasoning Method for Biomimetic Concept Generation
1 Introduction
2 Literature Review
3 The Proposed Biomimetic Concept Generation Process
3.1 The Construction of Knowledge Cell
3.2 Systematic Analogical Reasoning Based on Bio-FBS/E-FBS Knowledge Cell
3.3 Mathematical Description of Transformation-Mapping-Analogy Design (TMAD) Approach
4 Implementation and Case Study
4.1 Design Requirements and Functions
4.2 Design Concepts by Analogical Reasoning
4.3 Performance Evaluation
5 Conclusions
References
Low Load-Independent Losses and Low Temperature Rise Functional Cage Bearing
1 Introduction
2 Numerical Calculation Model
2.1 Functional Cage Structure
2.2 Fluid Region Mesh
2.3 Boundary Conditions
3 Results and Discussion
3.1 Flow Field Analysis
3.2 Load-Independent Losses
3.3 Temperature Rise Test
4 Conclusions
References
Conceptual Design Method for Mechanical Products Based on Historical 3D Model Design Knowledge
1 Introduction
2 A Framework of Mechanical Product Conceptual Design
3 Methodology
3.1 Design of Domain Knowledge Graph for 3D Model Unstructured Data
3.2 A Mechanical Product Conceptual Design Method Based on RFSCO
4 Case Study and Discussion
4.1 Product Background Description
4.2 Knowledge Extraction Based on the Proposed Knowledge Representation Model
4.3 Domain Knowledge Graph Construction
4.4 Application
5 Conclusions
References
Research on Aging-Friendly Design Evaluation Model of Wearable Devices Based on Implicit Interaction Theory
1 Introduction
2 Theoretical Framework
2.1 Influencing Factor Collection and Selection
2.2 Hypothetical Model Formulation and Revision
2.3 Model Verification
3 Example Analysis
3.1 User Research
3.2 Analysis of Results and Optimisation Strategies
3.3 Sensory Experience Optimisation
3.4 Analysis of Optimization Results
4 Conclusion
References
Patent-Based Technology Efficacy Information Extraction in Product Innovation Design
1 Introduction
2 Extraction Modeling Determination
3 Extraction Preprocessing and Data Enhancement
3.1 Technical Subject Matter Extraction Preprocessing
3.2 Positioning and Analysis of Efficacy Statements
3.3 Data Enhancement
4 Case Study
4.1 Patent Data Acquisition and Preprocessing
4.2 Model Parameters and Evaluation Metrics
4.3 Technical Subject Headings Extraction Results
4.4 Efficacy Information Extraction Results
5 Conclusion
References
Research on Forward Design for Product Innovation
1 Foreword
2 Research Methods
2.1 Forward Design
2.2 Axiomatic Design
2.3 TRIZ Theory
3 Research Process
3.1 Design Requirement Extraction
3.2 Function-Behaviour-Structure Matrix Analysis
3.3 Obtaining the Ideal Solution for the Product Structure
3.4 Product Scheme Generation
4 Case Study
4.1 Extraction of Faucet Design Requirements
4.2 Faucet Function-Behaviour-Structure Design Matrix Analysis
4.3 Obtaining the Ideal Solution for the Faucet Structure
5 A Self-cleaning Faucet Design Scheme Is Generated
6 Conclusion
References
Digital Twin-Driven Intelligent Monitoring of a Marine Gearbox Based on CNN-LSTM Network
1 Introduction
2 Architecture Design of the MGDTS
2.1 Overall Architecture of the MGDTS
2.2 Virtual and Real State Real-Time Mapping Technology of the MGDTS
2.3 Model Validation and Data Correction
2.4 Gearbox Fault Early Warning Based on Twin Data and CNN-LSTM Network
3 Results and Discussion
4 Conclusions
References
Evaluation Index System of Human-Chair Adaptation of High-Speed Train Seat
1 Introduction
1.1 A Subsection Sample
2 Material and Method
2.1 A Survey of Human-Chair Adaptation Problem
2.2 Identification and Definition of Indicators
2.3 G1 Method Implementation Process
3 Results
4 Discussion
5 Conclusion
References
Design of Wearable KOA Postoperative Rehabilitation Training Equipment
1 Introduction
2 Gait Analysis and Data Collection of Human Motion
2.1 Gait Analysis of Human Motion
2.2 Gait Raw Data Acquisition
3 Design of Rehabilitation Training Device After KOA Operation
3.1 Principle Analysis of Power Assist Components
3.2 Design of Rehabilitation Training Equipment
4 Verification of Dynamic Capture Experiment
4.1 Physical Production
4.2 Experimentation
5 Conclusion
References
Design Analogy by Functional Case Modeling and BioTRIZ in Biologically Inspired Design
1 Introduction
2 Functional Case Modeling and Functional Case Reuse
2.1 Function
2.2 Behavior
2.3 Structure
2.4 Environment
3 BioTRIZ
4 Implementation and Case Study
4.1 Representation of Biological Cases
4.2 Representation of Design Problem
4.3 Case Study of Check Valve
5 Conclusion
References
Multidisciplinary Simulation and Optimization Design
Study on the Effect of Support Stiffness on the Load-Sharing Characteristics of Star Gear Transmission
1 Introduction
2 Equivalent Model Under the Static and Dynamic Condition
2.1 Static Equivalent Calculation Model
2.2 Dynamic Equivalent Calculation Model
3 Load-Sharing Characteristics
3.1 Static Load-Sharing Characteristics
3.2 Dynamic Load-Sharing Characteristics
4 Effect of the Support Stiffness on the Load-Sharing Performance
4.1 Effect of the Support Stiffness on the Static Load-Sharing Coefficient
4.2 Effect of the Support Stiffness on the Dynamic Load-Sharing Coefficient
5 Conclusions
References
Optimization Design of Dynamic Stiffness of Rolling Bearings for High-Speed Electric Spindles Using the Box-Behnken Response Surface Method
1 Introduction
2 Dynamic Model of Rolling Bearings
3 Hertz Contact Stiffness Theory
4 Experimental Design for Stiffness Optimization
4.1 Screening Design
4.2 The Single-Factor Experiment Design
4.3 The Multi-factor Experiment Design
5 Results and Discussion
5.1 The Influence of Single Factor on the Bearing Stiffness
5.2 The Influence of Multi-factor Interactions on the Bearing Stiffness
5.3 Optimal Design of Bearing Stiffness
6 Conclusion
References
Optimization Design of Liquid Metal Lubricated Thrust Bearing in X-Ray Tube for High Speed Computed Tomography
1 Introduction
2 Establishment of Calculation Model
2.1 Basic Structural Parameters of Bearings
2.2 Coordinate Transformation Based on Boundary Fitting
2.3 Solving Reynolds Equation
2.4 Sealing Characteristic Calculation
3 Model Verification
4 Analysis of Calculation Results
5 Conclusions
References
Characteristic Analysis of Pressure Pulsation Attenuation by Different Combinations of Inner Cannula
1 Overview
2 Basic Theory
3 Geometric Models and Simulation Methods
3.1 Geometric Model
3.2 Simulation Method
4 Results and Analysis
4.1 Simulation and Verification
4.2 Transmission Loss Analysis
5 Conclusion
References
Multi-attribute Evaluation and Decision-Making for Configuration Design
1 Introduction
2 Evaluation Rules and Decision-Making Algorithms
2.1 Definition of the Evaluation Indicators
2.2 Values of the Evaluation Indicators
2.3 Weights of the Evaluation Indicators
2.4 Calculation of the Evaluation Results
3 An Example
4 Conclusion
References
Improved Dynamic Path Planning Algorithm of Mobile Robot Based on Fusion of A* and DWA
1 Introduction
2 Improved A* Algorithm
2.1 Traditional A* Algorithm
2.2 Improved A* Algorithm
3 Improved DWA Algorithm
3.1 Traditional DWA Algorithm
3.2 Improved Evaluation Function of DWA Algorithm
4 Fusion Algorithm
5 The Simulation Verification
5.1 Improved A* Algorithm Simulation Experiment
5.2 Simulation Experiment of Fusion Algorithm
6 Conclusion
References
Topology Optimization of Electric Vehicle Chassis with Porous Frames and Feature-Deformable Batteries
1 Introduction
2 Design Parametrization of EV Chassis
2.1 Deformable Feature Description for Li-Ion Batteries
2.2 Structural Parametrization
3 Concurrent Topology Optimization Model for EV Chassis
3.1 User Requirement Constraints
3.2 Local Volume Constraint for Porous Architectures
3.3 Geometrical Constraints for Battery Cells
4 Results and Discussions
4.1 EV Chassis with Optimized Porous Patterns and Distributed Batteries
4.2 Design Comparison About Crashworthiness and Static Stiffness
4.3 Different Porosity Patterns
5 Conclusion
References
Investigation of Variable Radius Base Circle Involute Control Coefficient for Scroll Compressor
1 Introduction
2 Integrated Functional Equation of Scroll Profile
3 Calculation of the Working Chamber Volume
4 Geometric Performance Indicators
4.1 Displacement Volume
4.2 Compression Ratio
4.3 Minimum Outer Diameter
4.4 Area Utilization Coefficient
4.5 Scroll Tooth Thickness
5 Research on the Law of Control Coefficients and Optimization Strategies
6 Conclusion
References
Aerodynamic Optimization of a Low Pressure Exhaust Hood of Steam Turbine Using Bayesian Optimization
1 Introduction
2 Bayesian Optimization
2.1 Gaussian Process Model
2.2 Adaptive Confidence Bound Acquisition Function
3 Aerodynamic Performance Optimization of a Low Pressure Exhaust Hood
3.1 Parameterization Methods and Design Variables
3.2 Numerical Methods and Boundary Conditions
3.3 Parameterization Methods and Design Variables
3.4 Optimization Process
4 Aerodynamic Performance Analysis of Optimized Exhaust Hood
4.1 Optimization Process
4.2 Optimization Process
5 Conclusion
References
A Surrogate Model Using Deep Learning for 2D Stress Distribution Prediction of Satellites
1 Introduction
2 Computation Model of Satellite Stress Distribution
3 Methodology
3.1 The Surrogate Model Framework of Stress Distribution Solution
3.2 Data Preparation
3.3 Artificial Neural Network and Evaluation Metrics
4 Experiment Results and Discuss
4.1 Performance of Model Training for Stress Distribution Prediction
4.2 The Relationship Between the Dataset Scale and the Prediction Performance
4.3 The Relationship Between the Component Number and the Prediction Performance
5 Conclusion
References
Design Optimization of Permanent Magnet Coupler Based on Physics-Informed Neural Networks
1 Introduction
2 Backgrounds
3 Establishing PINN Optimization Model
4 Single Objective Optimization
4.1 Problem Description
4.2 Single Parameter Optimization
4.3 Multi-parameter Optimization
5 Conclusion
References
Topology Optimization for the Lightweight Design of Mechanical Leg of the Hydraulic Bipedal Robot
1 Introduction
2 Robot Mechanical Leg Improvement Topology Optimization Design
2.1 The Basic Theory of Topology Optimization
2.2 Mechanical Leg Topology Optimization Process
2.3 Mechanical Leg Machined Design Optimized Style
2.4 Determination of Initial Configuration of Mechanical Legs and Establishment of Analysis Model
2.5 Static Analysis of Initial Configuration
3 Mechanical Leg Topology Optimization
3.1 Robot Topology Optimization
3.2 Optimization Solution Selection and Results Simulation Validation
3.3 Robot Mechanical Leg Optimization Comparison
4 Closing Words
References
Study on Critical Parameters of Non-linear-stiffness Anti-galloping Device for Ultra-High-Voltage Transmission Line
1 Introduction
2 Modeling and Solving Coupling System
3 Analysis and Optimization
3.1 Theoretical Optimization Scheme
3.2 Example Analysis
4 Conclusions
References
Adjustment Calculation Method for the Actuators of an Active Main Reflector Antenna
1 Introduction
2 Single Panel Fitting Function
3 Solution of Actuators Adjustment
4 Comparison of Fitting Function Adjustment Effects
5 Reflector Surface Panel Fitting Function
6 Conclusion
References
Kinetic Simulation Analysis of CT Spherical Tube Rotating Anode Rotor System
1 Introduction
2 CT Spherical Tube Rotating Anode Rotor System
3 Rotor System Modal Simulation
3.1 Theory of Modal Analysis
3.2 Meshing and Constraint Addition
3.3 Analysis of Simulation Results
4 Rotor System Harmonic Response Analysis
4.1 Basic Theory of Harmonic Response Analysis
4.2 Results of Harmonic Response Analysis
5 Optimization of the Connecting Rod Structure
6 Conclusions
References
Dynamic Adaptive Variable-Fidelity Modeling Method for BGA Solder Joint Design
1 Introduction
2 Dynamic Adaptive Variable-Fidelity Modeling Method
2.1 Overall the Method
2.2 Variable-Fidelity Modeling
2.3 SOM-Based Adaptive Sampling
3 Soldering Solder Joint Modeling
4 Contrast
5 Conclusions
References
Scheme Optimization Method of Multi-station Modular Machine Tool Based on Non-cooperative Game
1 Introduction
2 Non-cooperative Game
3 Cost Estimation Using TDABC Method
3.1 Activity Division and Cost of Machining Units
3.2 Determine Activity Drivers and the Driver Allocation Rule
3.3 Cost Estimation of Machining Units
4 Solving Non-cooperative Game Models
4.1 Computing the Strategy Sets
4.2 Computing the Payoff Matrix
4.3 Computing Nash Equilibrium Solutions
5 An Example
6 Conclusion
References
Multi-objective Optimization of the Front-End Structure of an Automobile Body Based on Active-Semi-Supervised Learning
1 Introduction
2 Methodology
2.1 Parameterization Methods
2.2 XGBoost
2.3 Procedure of Proposed Optimization Framework
2.4 Improved TS-SSL Algorithm
3 Optimization Design of the Front-End Structure of an Automobile Body
3.1 Finite Element Modeling of Positive Impact Cart
3.2 Finite Element Simulation of Body Positive Impact
3.3 ISIGHT-Based DOE Process
3.4 Design Variable
3.5 Multi-objective Optimization Problem of Automobile Body Front-End Structure
3.6 Surrogate Model
3.7 Optimization Strategies
4 Results and Discussion
4.1 Surrogate Model Evaluation Benchmark Function Tests
4.2 Energy Absorption Ratio
4.3 Transformation Mode
4.4 Peak Acceleration
5 Conclusions
References
High-dimensional Bayesian Design Optimization Over Mixed Variables
1 Introduction
2 Background
2.1 Bayesian Optimization Algorithm
2.2 Latin Hypercube Sampling Method
3 The Proposed Method
3.1 Dimension Reduction via MGP
3.2 Supervised Non-linear Dimension Reduction and Feature Fusion
3.3 Neural Network Architecture Search for MGP
3.4 Algorithm Summary
4 Numerical Evaluations
4.1 Experiment Setup
4.2 Mathematical Functions
4.3 Machine Tool Column Design Optimization
4.4 Turbine Stator Blade Design Optimization
5 Conclusion
References
Research on Indoor UAV 3D Path Planning Based on Optimal Ant Colony-Artificial Potential Field Method
1 Introduction
2 Three-Dimensional Environmental Modeling
3 Algorithmic Optimization
3.1 Ant Colony Algorithm Optimization
3.2 Artificial Potential Field Method Optimization
3.3 Ant Colony Algorithm and Artificial Potential Field Fusion Algorithm
4 Simulation Experiments and Discussion
4.1 Numerical Simulation
4.2 Visualization Simulation
5 Conclusion
References
Prediction and Optimization of Residual Stress After Reflow Soldering of BGA Solder Joints Based on Multi-fidelity Surrogate Model
1 Introduction
1.1 A Subsection Sample
2 Simulation of the Three-Dimensional Appearance of BGA Solder Joints
2.1 Least-Energy Principle
2.2 Simulation of Solder Joint Appearance Based on Surface Evolver
3 Finite Element Analysis of Residual Stress in BGA Solder Joints
3.1 Finite Element Analysis Model
3.2 Simulation Calculation of Residual Stress After Reflow Soldering
4 Prediction of Residual Stress in Joints After Reflow Soldering Based on the Co-Kriging Models and the RBF Model
4.1 Convergence Test
4.2 Design of Experiment
4.3 Surrogate Models Construction
4.4 Comparative Analysis of Prediction Results of Residual Stress After Reflow Soldering
5 Optimize the Design of BGA Solder Joint Parameters Using PSO
6 Conclusions
References
Research on Aerodynamic Characteristics of Ducted Fan System Under Wall Effect
1 Introduction
2 Models and Methods
2.1 Basic Parameters of Ducted Fan Model
2.2 Finite Element Model
3 Simulation Study on Wall Effects
3.1 Infinite Near Surface Effect
3.2 Finite Near Wall Effect
4 Experimental Verification
5 Conclusion
References
A Preliminary Demonstration of a Control Co-design Framework for the Floating Offshore Wind Turbines
1 Introduction
2 CCD Framework of FOWT
2.1 CCD Optimization Framework for FOWT
2.2 Parameterization of Modularized OpenFAST Model
2.3 Framework Verification
3 CCD of DTU 10 MW Reference Model
3.1 Introduction of DTU 10 MW Reference Model
3.2 Baseline Model Analysis
3.3 CCD Formulation
3.4 CCD Optimization
4 Results
5 Conclusions
References
Effect of Tip Clearance on the Cavitation Performance of a Helical Blade Transfer Pump
1 Introduction
2 Research Object
3 Cavitation Model
4 Methods and Validation
4.1 Mesh Generation
4.2 Boundary Condition Settings
4.3 Numerical and Experimental Results
5 Result Analysis
5.1 Effect of Cavitation Number on Pump Head Under Different Tip Clearances
5.2 Influence of Tip Clearance on the Radial Cavitation Distribution of Transfer Pump Impeller
5.3 Effect of Tip Clearance on the Axial Cavitation Distribution of the Pump
5.4 Effect of Tip Clearance Unstable Flow on Clearance Cavitation
6 Conclusion
References
Strength Analysis of AGV Chassis Based on Dynamic Load Spectrum of Hazardous Conditions
1 Introduction
2 Calculation Theory and Model Establishment
2.1 Calculation Model of Wheel-Ground Contact Force
2.2 AGV Multibody Dynamics Model Established
3 AGV Overpass Test Experiment and Model Calibration
3.1 AGV Ramp Crossing Test Experiment
3.2 AGV Simulation Model Calibration
4 Chassis Load Spectrum Extraction and Strength Analysis
4.1 Chassis Load Spectrum Extraction
4.2 Chassis Strength Analysis
5 Conclusions
References
Multi-objective Optimization Design of High-Speed Centrifugal Pump Impeller Based on NSGA-III Algorithm
1 Introduction
2 Initial Model Parameters and Numerical Calculations
2.1 Initial Model Parameters
2.2 CFD Numerical Calculation
3 Multi-Objective Optimization
3.1 Variable Sensitivity Analysis
3.2 Establish a Sample Library
3.3 SVM Regression Fitting and Prediction
3.4 Multi-objective Solution Based on the NSGA-Algorithm
4 Optimization Results and Analysis
4.1 Optimal Solution Results
4.2 Flow Field Analysis
5 Conclusion
References
A Parallel Multi-objective Efficient Global Optimization Method and Its Application of Multi-stage Axial-Flow Compressor Optimization Design
1 Introduction
2 Background
2.1 Kriging
2.2 Multi-objective EI
3 Proposed Method and Its Validation
3.1 PEIMHV-Based MOEGO Method
3.2 Validation
4 Optimization Design of a Three-Stage Axial Flow Compressor
4.1 Problem Setup and Implementation
4.2 Results and Discussion
5 Conclusions
References
Optimization Design of Helical Cylindrical Gears
1 Introduction
2 Gear Design Paratemeters
2.1 Tip Thickness
2.2 Contact Ratio
2.3 Sliding Factor at the Tooth Tip
2.4 Edge Radius
2.5 Contact Safety Factor and Bending Safety Factor
2.6 Calculation Results
3 Optimization Design
3.1 Objective Function
3.2 Constraint Conditions
3.3 Input Parameters
3.4 Design Variables
3.5 Optimization Algorithms
3.6 Optimized Results
3.7 Comparison Validation
4 Conclusions
References
Similarity Characteristics Research on Large Scale Con-Centrator Unit Considering Thickness Distortion
1 Introduction
2 Dimensional Analysis
2.1 Description of SSPS-OMEGA
2.2 The Preliminary Similarity Criteria
3 Separated Part Similarity Method Based on Dimensional Analysis (DA-SPSM)
3.1 Distortion Analysis
3.2 Calculation Method
3.3 Prediction Equation
4 FEM Simulations and Calculations
5 Conclusions
References
Numerical Simulation of Fatigue Crack Propagation in Nuclear Fuel Cladding Tube
1 Introduction
2 Material Models and Basic Assumptions
2.1 Material Models
2.2 Basic Assumptions
3 Fatigue Crack Propagation Parameters and Models
3.1 Propagation Parameters
3.2 Crack Models
4 Crack Propagation Analysis and Residual Life Prediction of Cladding Tube
4.1 Effect of Axial Tilt Angle on Crack Propagation and Residual Fatigue Life
4.2 Effects of Different Axial Positions on Crack Propagation and Residual Fatigue Life
4.3 Effect of Crack Fusion on Crack Propagation and Residual Fatigue Life
5 Conclusion
References
Numerical Simulation Analysis of Finger Seal Wear Performance
1 Introduction
2 Structural of Finger Seal
3 Finger Seal Wear Model
3.1 Finger Seal/Rotor Material Wear Test Equipment and Specimens
3.2 Experimental Design
3.3 Wear Test Results
3.4 Wear Model
4 Finite Element Analysis of Finger Seal Wear
4.1 Wear Simulation Process and Key Technology
4.2 Validation of Wear Simulation Analysis Method
4.3 Finger Seal Wear Simulation Model
5 Finger Seal Wear Simulation and Analysis Results
5.1 Effect of Structural Parameters on Wear Performance
5.2 Effect of Working Condition Parameters on Wear Performance
6 Conclusions
References
Structural Design of a Kirigami Gripper by Finite Element Method
1 Introduction
2 Finite Element Modeling
3 Experiment
3.1 Uniaxial Tensile Test
3.2 Actuation Force Test of the PET Grippers
4 Results and Discussions
4.1 Influences of Shell Thickness
4.2 Influences of t
4.3 Influences of w
5 Conclusions
References
Simulation Analysis of the Oil Distribution and Churning Loss of a Planetary Gear Train in Splash Lubrication
1 Introduction
2 Numerical Scheme
2.1 Governing Equations
2.2 Weight Function
2.3 Algorithm
2.4 Simulation Model
3 Simulation Result
3.1 Oil Distribution and Lubrication
3.2 Churning Loss
4 Conclusion
References
Multi-objective Optimization Design on Squamous Texture for the Sealing Performance
1 Introduction
2 Hydrodynamic Model and Design of Texture
2.1 Hydrodynamic Model
2.2 Design of Texture
3 Multi-objective Optimization on Squamous Texture
3.1 Analysis of Response Surface Methodology
3.2 Multi-objective Optimization
4 Conclusions
References
Research on Reversing Impact Control Based on Parallel Large Inerter Suspension
1 Introduction
2 Structure of the Electromechanical Energy Harvesting Suspension
3 Parallel Large Inerter Suspension Impact Force Analysis
3.1 Parallel Inerter Suspension Model
3.2 Parallel Large Inerter Suspension Impact Analysis
4 DTC Control Based on LQR
4.1 Parallel Inerter Suspension Model
4.2 DTC Control
4.3 Simulation Analysis
5 Conclusion
References
Topology Optimization Design of Cartwheel Hinge Based on Response Surface Method
1 Introduction
2 Topology Optimization of the Cartwheel Flexure Hinge
2.1 Topology Optimization Mathematical Model
2.2 Sensitivity Analysis
3 Numerical Results
3.1 Topology Optimization Result
3.2 Response Surface Methodology to Process Topology Optimization Results
4 Conclusions
References
Topology Optimization of Multi-material Structures Based on Improved BESO Algorithm
1 Introduction
2 Algorithm and Its Implementation
2.1 Description of the Topology Optimization Problem
2.2 Basic Theory of the BESO Algorithm
2.3 Improvement of the BESO Algorithm
3 Topology Optimization of Multi-Material Structures Column and Solution
3.1 Static Stiffness Optimization Model for Multi-Material Structures
3.2 Sensitivity Analysis and Element Addition and Deletion Criteria
3.3 Static Stiffness Optimization Process for Multi-material Structures
4 Example of Static Stiffness Optimization Algorithm for Multi-Material Structures Based on Improved BESO Algorithm
5 Conclusion
References
Research on the Dynamic Characteristics of Hot Die Forging Press Controlled by Combined Wet Clutch-Brake
1 Introduction
2 Dynamic Analysis of the Hot Die Forging Press Transmission System
2.1 Transmission System Dynamic Model
2.2 Torque Characteristics of Wet Friction Pairs
3 Co-simulation Model
3.1 Hydraulic System and Control Principle
3.2 Transmission System Dynamic Simulation Model
4 Analysis of Simulation Results
5 Conclusion
References
Implementation of Hydro-thermal Coupling Model of Windshield Defrosting System in OpenFOAM
1 Introduction
2 Numerical Method
2.1 Fluid Modeling
2.2 Thermal Modeling
2.3 Fluid-Thermal Coupling Modeling
2.4 Numerical Solution
3 Results and Discussion
3.1 Flow in Cabin
3.2 Temperature Field in Cabin
3.3 Defrosting Process on Windshield
4 Conclusions
References
Research on Cauchy Mutation Grasshopper Optimization Algorithm-Based PID Control of the Dual-Drive Feed System
1 Introduction
2 The Dynamic Model of DDFS
3 Transfer Function for DDFS
4 Simulation of CMGOA-Based PID Control
4.1 PID Control Model of DDFS
4.2 The Principle of CMGOA
4.3 CMGOA-Based PID Control Simulation of DDFS
5 Synchronous Control Experiment
6 Conclusions and Future Work
References
A Vibration Suppression Control Strategy Based on Grey Wolf Optimization Algorithm
1 Introduction
2 Modeling and Analysis of Welding Robot
3 Vibration Suppression Trajectory Planning of the Multi-Layer and Multi-Pass Welding Robot of the Medium Thick Plates
3.1 Grey Wolf Optimization Algorithm Based on Restriction Function
3.2 Joint Trajectory Planning Based on Improved Grey Wolf Algorithm Vibration Suppression
4 Conclusions and Future Work
References
Influence of Rocker Pin Elastic Deformation on the Dynamic Characteristics of Chain CVT
1 Introduction
2 Theoretical Model
2.1 Chain CVT Structure and Working Principle
2.2 Static Analysis
3 Chain CVT Rigid-Flexible Coupling Model
4 Dynamic Characteristic Simulation Analysis
5 Conclusion
References
Surrogate-Assisted Hybrid Searching Method for High-Dimensional Expensive Optimization Problems
1 Introduction
1.1 Research Background and Literature Review
1.2 Innovations and Contributions
2 Related Techniques
2.1 Particle Swarm Optimization
2.2 Radial Basis Function
3 Methodology of SAHSM
4 Numerical Benchmarks Testing
4.1 Description of Benchmarks
4.2 Test Results
5 Engineering Case Testing
5.1 Introduction to Airfoil Aerodynamic Optimization Problem
5.2 Optimization Results
6 Conclusions
References
Thermo-Structural Coupling Analysis and Verification of Antenna Deployment Hinges
1 Introduction
2 Space Thermal Environment
2.1 Space Vacuum
2.2 Space Low Temperature
2.3 Space Heat Source
3 Thermo-Structural Coupling Analysis
3.1 Antenna Deployable Hinge Configuration
3.2 Thermo-Structural Coupling Analysis
4 Thermal Deformation Test of Antenna Deployable Hinge
4.1 Test Product Technical Status
4.2 Test Method
4.3 Test Results
5 Conclusion
References
Topology Optimization of the 3D Heat Dissipation Structure via the Improved Feature-Driven Method
1 Introduction
2 3D Feature Construction and Pre-layout
3 Mathematical Model of 3D Heat Transfer Optimization Problem
4 Numerical Example
5 Conclusions
References
Analysis of Friction and Lubrication Characteristics of Tapered Roller Bearings Under Thermal Elastohydrodynamic Lubrication
1 Introduction
2 Fundamental Equation
3 Numerical Solution Methods
4 Results and Discussion
4.1 Effects of Slide-to-Roll Ratio
4.2 Effects of Concentrated Loads
4.3 Effects of Rotational Speed
4.4 Effects of Equivalent Radius of Curvature
4.5 Effects of Half-Cone Angle
5 Conclusions
References
Floating Projection Topology Optimization of Functionally Graded Porous Infill Structures for Acoustic-Mechanical Coupled Systems
1 Introduction
2 FPTO Method for Functionally Graded Porous Infill Acoustic-Mechanical Structures
2.1 Mixed u/p Formulation
2.2 Four-Field Method
2.3 Topology Optimization Model and the Linear Material Model
2.4 Sensitivity Analysis
2.5 Numerical Implementation and Floating Projection Constraint
2.6 Smooth Representation of Optimized Topologies
3 Numerical Examples
3.1 Example 1: A 2D Double-Clamped Beam with Functionally Graded Porous Infill
3.2 Example 2: A 3D Cuboid Porous Infill Sandwich Structure with Dynamic Acoustic Constraints
4 Conclusions
References
Reliability and Quality Assurance Design
Reliability Analysis of Battery Electric Vehicle High-Speed Gear Transmission Considering Correlation of Multiple Failure Modes
1 Introduction
2 Static Strength and Steady-State Thermal Analysis Based on ANSYS
2.1 Finite Element Model Generation
2.2 Contact Stress and Bending Stress Analysis
2.3 Steady-State Thermal Analysis
3 Single Failure Mode Reliability Analysis
4 Reliability Evaluation of Multi-Failure Mode Correlation
4.1 Reliability Analysis
4.2 Reliability Calculation of Gears Under Multiple Failure Mode Correlation
5 Conclusion
References
Optimization of Design Change Propagation Path for Mechanical Product Considering Component Complexity
1 Introduction
2 Construct Change Propagation Model of Machinery Products
2.1 The Network Model of Product Parts
2.2 The Node Importance of Component Network
2.3 Component Complexity
2.4 Change Propagation Intensity Assessment
3 Multi-source Design Change Propagation Path Optimization
3.1 Optimal Design Change Propagation Path Solution
3.2 Multi-source Change Propagation Path Optimization Solution Process
4 Case Study
5 Conclusion
References
Experimental Study on Fretting Wear Mechanism of Conductor-Fitting System in Distribution Net
1 Introduction
2 Materials and Experimental
2.1 Experimental Installation
2.2 Test Procedure
3 Results and Discussion
3.1 Mounting Torque
3.2 Vibration Amplitude
4 Conclusions
References
Reliability Analysis of Wind Turbine Blades Based on Numerical Analysis and Multi-fault Competition Failure
1 Introduction
2 Competitive Failure Process Study
2.1 Failure Process and Basic Assumptions
2.2 Reliability Analysis Process Considering Multiple Failure Modes Competing for Failure
3 Competitive Failure Reliability Modeling
3.1 Establishment of Degradation Failure Model
3.2 Establishment of Sudden Failure Model
3.3 Competition Failure Modeling
4 Parameter Estimation
4.1 Estimation of Degradation Failure Process Parameters
4.2 Sudden Failure Process Parameter Estimation
4.3 Competitive Failure Model Parameter Estimation
5 Case Study
5.1 Introduction to Data Sources
5.2 Competitive Failure Model Results and Analysis
6 Conclusion
References
Failure Model and Multi-parameter Leakage Rate Analysis of Metal Rubber Seals
1 Parameter Analysis of Metal Rubber Seals
2 Analysis of Failure Forms of Metal Rubber Seals
2.1 Seal Failure
2.2 Excess Deformation
2.3 Surface Wear
2.4 Material Creep
3 Failure Model Analysis of Metal Rubber Seals
3.1 Strength Failure Model
3.2 Degenerate Failure Model
4 Multiparameter Leakage Rate Analysis
5 Conclusion
References
Construction of Fatigue Life Prediction Model and Optimization of Structural Parameters for Gear-Rack Transmission Mechanism of Mountain Train
1 Introduction
2 Fatigue Life Prediction Model of Tooth Root Bending of the Gear-Rack Transmission Mechanism for Mountain Train
2.1 Mechanical Model of the Gear-Rack Transmission Mechanism
2.2 Simulation Model Building
3 Fatigue Analysis of Tooth Root Bending of Gear-Rack Transmission Mechanism at Different Working Conditions
3.1 Multi-body Dynamics Analysis of Gear and Rack Under Different Working Conditions
3.2 Finite Element Analysis of Gear-Rack Under Different Working Conditions
3.3 Finite Element Analysis of Gear-Rack Under Different Working Conditions
4 Prediction Model of Tooth Root Bending Stress of Gear Transmission Mechanism
4.1 Orthogonal Experimental Analysis
4.2 Root Bending Stress Prediction Model
4.3 Verification of Root Bending Stress Prediction Model
4.4 Optimization Design of Structural Parameters of Gear Transmission Mechanism
5 Conclusions
References
Uncertainty Propagation Analysis of TBM Performance Based on Sparse Polynomial Chaos Expansion Combined with Kernel Density Estimation and Bayesian Model Average
1 Introduction
2 Methods
2.1 Polynomial Chaos Expansion (PCE)
2.2 Bayesian Model Average
2.3 Kernel Density Estimation
2.4 Proposed KBPCE Method
2.5 Benchmarking Methods
3 Results
3.1 Case Description
3.2 Uncertainty Propagation Analysis
4 Conclusions
References
The Dual-Encoder Transformer for Prediction of Aero-Engine Remaining Useful Life with Uncertainty Quantification
1 Introduction
2 Methodology
2.1 Dual-Perspective Fusion Transformer
2.2 Bayesian Framework for Uncertainty Quantification
3 Experiment and Result Analysis
3.1 C-MAPSS Dataset
3.2 Experimental Setup
3.3 Result and Analysis
4 Conclusion
References
Probabilistic Diagnosis of Aviation Engine with Invertible Neural Network
1 Introduction
2 The Proposed Probabilistic Diagnosis
2.1 Forward Modeling with Gaussian Process
2.2 Inverse Modeling with Invertible Neural Network
2.3 Post-processing
3 Numerical Experiments
3.1 Experimental Setups
3.2 Results and Discussions
4 Discovering the Root Causes for the Degradation of Aircraft Engines Fuel Efficiency
5 Conclusion
References
Multi-agent Deep Q-Learning for Maintenance Scheduling of Engineering System with Large-Scale State Space
1 Introduction
2 The Proposed Multi-agent Deep Q-Learning
3 Environment Modeling
4 Results and Discussions
5 Conclusion
References
An Improved Wavelet Filtering Method for Welding Seam Images in a Complex Environment
1 Introduction
2 Wavelet Filtering Principle
3 The Improved Wavelet Filtering Method
4 Implementation of Improved Wavelet Filtering at Each Stage
4.1 Wavelet Transform Stage
4.2 Low-Frequency Subbands Partial Processing
4.3 High-Frequency Subbands Partial Processing
4.4 Wavelet Reconstruction and Image Restoration
5 Experimental Analysis
5.1 Weld Image Acquisition and Preprocessing
5.2 Evaluation of Image Denoising Effect
6 Application of the Improved Wavelet Filtering Method for Weld Detection
7 Conclusion
References
Study on the Method to Predict the Fatigue Life of a Rubber Mount
1 Introduction
2 Methods to Predict the Fatigue Lives of Rubbers
2.1 Maximum Principle Strain
2.2 Strain Energy Density Release Rate
3 FEA on the Rubber Mount
4 The Fatigue Life Prediction of the Rubber Mount
5 Experimental Validation
6 Conclusions
References
Study on Wear Characteristics of the Rack-and-Pinion Driving Mechanism in the Rack Railway Under Mixed Elastohydrodynamic Lubrication
1 Introduction
2 Wear Model of the Rack-and-Pinion Driving Mechanism in the Rack Railway
2.1 Geometric Model
2.2 Line-Contact Mixed EHL Model
2.3 Wear Model
2.4 Contact Temperature Model
3 Wear Analysis of the Rack-and-Pinion Driving Mechanism in the Rack Railway
3.1 Wear Depth
3.2 Influence of Working Parameters
3.3 Effects of Geometrical Parameters
4 Experimental Analyses
4.1 Line Contact Wear Test
4.2 Analysis of Experimental Results
5 Conclusions
References
Improved PMSM Speed Control Strategy with Non-singular Fast Terminal Sliding Mode Control Based on Real-Time Simulation
1 Introduction
2 Mathematical Model of PMSM
3 NFTSMC Controller Design
3.1 Design of NFTSMC Controller
3.2 Stability Analysis for System
4 Simulations and Experiment
4.1 System Block Diagram and Motor Parameters
4.2 Simulation Results
4.3 Experimental Results
5 Conclusions
References
Motion Reliability Analysis of 6-DOF Industrial Robot
1 Introduction
2 Robot Kinematic Models
3 Solving Reliability Models
4 Estimating Reliability
5 Example Analysis
5.1 Simulation Platform Construction
5.2 Robot Reliability Evaluation
6 Conclusion
7 Funding Statement
References
Review on Intelligent Fault Diagnosis of Wind Tunnel Test System
1 Introduction
2 Fault Diagnosis Method Based on Traditional Signal Analysis Theory
3 Fault Diagnosis Method Based on Traditional Machine Learning
4 Fault Diagnosis Method Based on Deep Learning
4.1 Fault Diagnosis Method Based on Recurrent Neural Network
4.2 Fault Diagnosis Method Based on Convolutional Neural Network
4.3 Fault Diagnosis Method Based on Auto-Encoder Neural Network
4.4 Fault Diagnosis Method Based on Deep Belief Network
4.5 Fault Diagnosis Method Based on Transfer Learning
4.6 Comparison and Summary of Fault Diagnosis Methods Based on Deep Learning
5 Future Research Prospects
5.1 Fault Diagnosis Technology Based on Multi-modal Data Fusion
5.2 Small Sample Fault Diagnosis
5.3 The Further Development of Transfer Learning
6 Conclusion
References
Prediction of Water Demand in Pump Station Based on GM(1,1)-MA Model
1 Introduction
2 Grey Prediction Method and Moving Average Method Model
2.1 Grey Prediction Model
2.2 Moving Average Model
3 Combined Water Demand Forecasting Model
3.1 Construction of the Combined Forecasting Model
3.2 Evaluation Metrics for Prediction Results
4 Experimental Validation and Analysis
5 Conclusion
References
Typical Faults Recognizing for Seal Rings of Hydro-Dynamic Shaft Seal of Reactor Coolant Pump Based on ANN and Experimental Research
1 Background
2 Structure of Hydro-Dynamic Shaft Seal
3 Test Methods and Signal Acquisition
3.1 Experimental Plan
3.2 Sensor Arrangement
3.3 Test Results
4 Signal Processing and Feature Extraction
5 Four Fault Pattern Recognition of Dynamic Shaft Seal Frictional Pairs Based on ANN
6 Conclusions
References
High-Reliable Design for Mechanical Environment Adaptability of Space Servo Mechanism
1 Introduction
2 General Design of the Two-Axis Servo Mechanism
2.1 Functions and Specifications
2.2 Mechanism Architecture and Structure
3 Design and Analysis of Mechanical Environment Adaptability
3.1 Key Components Design of the Servo Mechanism
3.2 Hold-Down and Release Device Design
3.3 Static Analysis
3.4 Dynamic Analysis
4 Experimental Verification
4.1 Vibration Test
4.2 Shock Test by Unlocking the Separate Bolts
5 Conclusion
References
Research on Fatigue Crack Propagation and Life Prediction Based on GRU Neural Network
1 Introduction
2 Fatigue Crack Propagation Analysis and Residual Life Prediction Scheme Design of Hull Plate
2.1 Fatigue Crack Propagation Mechanism Analysis
2.2 Design of Ship Fatigue Crack Prediction Scheme
3 Simulation of Hull Plate Fatigue Crack Propagation
3.1 Load Analysis and Crack Modeling
3.2 Influence of Initial Crack Length and Load on Crack Stress Intensity Factor
3.3 Calculation of Remaining Life of Hull Plate
4 Residual Life Prediction of Hull Plates Based on GRU Neural Network
4.1 Overview of GRU Neural Networks
4.2 GRU Neural Network Prediction Model Construction and Remaining Life Prediction
5 Conclusions
References
Failure Analysis and Shape Optimization of Bonding Wire for SiC Power Module Encapsulated with Epoxy Resin
1 Introduction
2 Thermal-Mechanical Coupled Transient Analysis
2.1 Sub-modelling of Bonding Wires
2.2 Different Material Models
2.3 Loading Conditions and Boundary
3 Results and Discussion of Failure Modes
3.1 Numerical Results and Discussion
3.2 Experimental Validation
4 Shape Optimization of Bonding Wires for Epoxy Encapsulated Power Module
4.1 The Shape Design of Bonding Wires
4.2 Reliability Evaluation of Bonding Wires with Different Shapes
5 Conclusion
References
Numerical Simulation and Experimental Investigation on the Thin-Walled Lenticular Deployable Composite Boom During Coiling Process
1 Introduction
2 Numerical Simulation of Coiling Process of the LDCB
2.1 Configuration of the LDCB
2.2 Numerical Analysis of the LDCB During Coiling Process
2.3 Numerical Results Based on Variation of Curvature and Torsion
3 Large-Deformation Bending and Torsional Experiments
3.1 Bending Experiments
3.2 Torsional Experiments
3.3 Failure Margin Calculation
4 Conclusions
References
Optimized Design of Tribological Properties of Nano WS2 Lubricants Based on Ionic Liquid Additives
1 Introduction
2 Experimental Section
2.1 Experimental Materials and Equipment
2.2 Lubricant Preparation
3 Tribological Test
3.1 Determination of Lubricant Concentration
3.2 3D Contour Analysis
4 Physical and Chemical Properties Test
4.1 Fourier Infrared Spectroscopy
4.2 Viscosity Test
4.3 Thermal Conductivity Test
5 Conclusion
References
A Study on the Application of Industrial Collaborative Design Based on Agent Technology
1 Introduction
2 Agent Concepts and Architecture
2.1 Agent Concepts
2.2 Agent Architecture
3 Collaborative Design Structure
4 Collaborative Design with the Introduction of Agent Technology
5 Conclusion
References
Copula-Based Efficient Estimation for Global Reliability Sensitivity Analysis
1 Introduction
2 Review on the GRSI and Copula
2.1 Definition of the GRSI
2.2 Definition of Copula
3 The Relationship Between the GRSI and Copula
4 Estimation of the GRSI Based Copula
4.1 The Implementation of the Copula-MCS Method for the GRSI
4.2 The Implementation of the Copula-AK Method
5 Examples
5.1 A Risk Assessment Model
5.2 An Aero Engine Turbine Disk
6 Conclusions
References
A Sequential Interval Optimization Method for Tolerance Design
1 Introduction
2 Interval Optimization for Tolerance Design
2.1 Construction of Deterministic Objective Function
2.2 Construction of Deterministic Constraints
2.3 Construction of Deterministic Optimization
3 The Sequential Interval Optimization Method
3.1 Construction of Approximate Linear Optimization
3.2 The Iterative Mechanism
4 Numerical Examples and Discussion
4.1 Example 1
4.2 Example 2
4.3 Example 3
5 Conclusions
References
Digital and Intelligent Design
Optimal Design of Contact Interface Material Hardness for Improving Thermal Contact Performance
1 Introduction
2 Contact Interface Material Hardness Optimization Design Algorithm
2.1 Thermal Contact Performance Optimization Problem
2.2 Optimal Design Algorithm
2.3 Optimization Procedure
3 Electronic Chip Packaging Case Studies and Discussions
3.1 Numerical Analysis Model of Microscopic Thermal Contact Performance
3.2 Results and Discussions Before Optimization Design
3.3 Results and Discussions After Optimization Design
4 Conclusions
References
PSO-Based Optimization of Rolling Contact Interface Modification of Cylindrical Roller Bearing
1 Introduction
2 Contact Analysis Model
2.1 Finite Element Analysis Model of Roller Contact
2.2 Roller Logarithmic Crowning Profile
3 Optimization Method of Logarithmic Profile Parameters
3.1 Particle Swarm Optimization Algorithm
3.2 Logarithmic Profile Parameters Optimization
3.3 Optimization Procedure
4 Optimization Case
4.1 Roller Structure and PSO Parameters Settings
4.2 Optimization Results and Discussion
5 Conclusions
References
A Text Matching Model Based on Keyword Attention Mechanism for Electronic Information Domain
1 Introduction
2 Our Model
2.1 Keyword Extraction Module
2.2 Text Matching Module
3 Experiment and Result
3.1 Datasets
3.2 Baselines Models
3.3 Implementation Details
3.4 Experimental Results
3.5 Ablation Study
4 Conclusions
References
A Method for Constructing Processes of Complex Parts with Multiple Features
1 Introduction
2 Representation of Processing Information for Complex Parts
2.1 A Multi-level Division Method for Processing Information of Complex Parts
2.2 Parameterized Expression of Processing Information
3 Based on DSM Process Information Extraction
3.1 Construction of Constraint Relationship Matrix
3.2 Processing Sequence Solution
4 Case Study
4.1 Parameterized Expression
4.2 Construction of Processing Processes
5 Conclusion
References
Fine-Grained Entity Classification Technology for Data Standard Adaptation
1 Introduction
2 Related Work
3 Method
3.1 Motivation
3.2 Our Model
4 Experiments
5 Conclusion
References
Intelligent Collaborative Innovative Design Method Under Open Environment
1 Introduction
2 Model of the Intelligent Collaborative Innovative Design Under Open Environment
3 Collaborative Innovative Design Based on FCs Under Open Environment
3.1 Match Features of FC
3.2 Match Relation Among FCs
4 Solution of the Optimal Design Solution
4.1 Match Complexity of FCs
4.2 The SC Sets Generated Based on Material Cost
4.3 Model of Generating Optimal Design Scheme Under Open Environment
5 Case Study
6 Conclusions
References
Spatial Data Thickening-Based Carbon Nephogram Using UAV Real-Time Monitoring
1 Introduction
2 Collaborative Integration Carbon Monitoring System Architecture
2.1 Traditional Carbon Emission Monitoring Methods
2.2 Collaborative Fusion Monitoring Device Architecture
2.3 Collaborative Fusion Monitoring Scheme Design
3 Monitoring Data Preprocessing and Spatial Interpolation Algorithm
3.1 Monitoring Data Preprocessing
3.2 Timing Interpolation and Spatial Interpolation Fusion Algorithm
4 Collaborative Fusion Carbon Monitoring Algorithm and Simulation
4.1 Spatial Carbon Emission Flux Models and Estimation Methods
4.2 Carbon Emission Algorithm for Ground Building Monitoring
4.3 Evaluation of Carbon Monitoring Cases in Smart Parks
5 Conclusions and Prospects
References
Research on Complex Product Maintainability Configuration Design Method Based on Knowledge Graph
1 Introduction
2 Proposed Methodology
2.1 Overview Framework
2.2 Maintenance Configuration Modeling
2.3 KG-Based Configuration Solution
3 Case Study
3.1 Maintainability Configuration Modeling
3.2 KG-Based Configuration Solution
4 Conclusion
References
Research on Multi-Agent Requirements Uncertainty of Complex Product Based on S-Cloud Model
1 Introduction
2 Proposed Methodology
2.1 Study Framework
2.2 Multi-Agent Requirements Mining
3 Prototype System Development
4 Case Study
4.1 Multi-Agent Requirements Mining
4.2 Requirements Weight Analysis
5 Conclusion
References
Cognition Behavior Modeling of Geometrical Entities for Autonomous Assembly Path Planning
1 Introduction
2 Preliminary
2.1 The Concept of IFP
2.2 BDI Model
3 Overview
4 Cognition Behavior Modeling for AAPP
4.1 Cognition Behavior Model of Hierarchical Geometrical Entities
4.2 Implementation of the Cognition Behavior Model
5 Case Study and Discussions
6 Conclusions
References
Optimal Design of Material Stiffness Based on WMFOA for Regulating Dynamic Performance of Contacting Structure
1 Introduction
2 Weighted Multi-subgroup Fruit Fly Optimization Algorithm
2.1 Fruit Fly Optimization Algorithm
2.2 Weighted Multi-subgroup Strategy
3 WMFOA-Based Material Stiffness Design Method
3.1 Material Stiffness Design Method for Regulating Natural Frequency of Contacting Structure
3.2 Optimization Procedure for Regulating Natural Frequency of Contacting Structure
4 Application of Material Stiffness Design
4.1 Optimization for Increasing the First-Order Frequency
4.2 Optimization for Increasing the Gap Between the Third-Order Frequency and the First-Order Frequency
5 Conclusions
References
Optimization Design Method of Interference Fit Amount for Assembly Interface Contact Performance
1 Introduction
2 Optimization Design Method for Interference Amounts
2.1 Analysis of Interference Assembly Processes
2.2 Progressive Evolution Algorithm Method of Interference Size Optimization
2.3 Optimization Procedure
3 Design Case
4 Results and Discussion
4.1 Optimization of Contact Stress
4.2 Optimization of Relative Coordinate Position
4.3 Optimization of Effective Contact Ratio
5 Conclusion
References
A WOA-Stacking Grading Mode Based on Multi-heterogeneous Classifiers Ensemble
1 Introduction
2 Related Works
3 Methodology and Dataset
3.1 Stacking Integration Framework
3.2 WOA-Stacking
3.3 Hierarchical Coupling of K-CV and Grid Search
4 Dataset Description and Preparation
4.1 Dataset Description
4.2 Input Feature Contribution Evaluation
4.3 Evaluation Metrics
5 Discussion and Analysis of Results
5.1 Parameter Settings
5.2 Classifier Combination Selection
5.3 Comparative Analysis of Classification Performance
6 Conclusion
References
Knowledge Reuse Method of Configuration Design Based on Knowledge Graph Embedding
1 Introduction
2 Proposed Approach
2.1 Ontology-Based Conceptual Model of Complex Product Configuration Design
2.2 Knowledge Graph Construction of Complex Product Configuration Design
2.3 Complex Product Configuration Solution Method Based on Graph Embedding
3 Case Study
3.1 Knowledge Graph Model Layer Construction of Bogie Configuration Design
3.2 Knowledge Graph Data Layer Construction of Bogie Configuration Design
3.3 Bogie Configuration Solution Based on Graph Embedding
4 Conclusion
References
Delamination Damage Mechanism of CFRP Laminates During the Interference-Fit Bolt Assembly Process
1 Introduction
2 Force Analysis of CFRP Laminates During Interference-Fit Assembly Process
3 Finite Element Simulation of Interference-Fit Assembly Process
4 Result of Simulation and Discussion
4.1 Stress Distribution Around Hole of CFRP Laminates
4.2 Thrust Force During Interference-Fit Assembly
4.3 Delamination Initiation Mechanism
5 Conclusions
References
Research on State Prediction of Wind Turbine Gearbox Based on Monitoring Data Distribution Similarity and Feature-Based Transfer Learning
1 Introduction
2 Methodology
2.1 Filtration and Feature Extraction of Monitoring Data
2.2 The Operational Condition Calibration Model
2.3 Operational State Prediction of Cross WTGB
3 Results and Discussion
3.1 Data Sample Preparation and Quality Assurance
3.2 Operational State Calibration
3.3 Operational State Prediction
4 Conclusions
References
Construction of a Cost Design and Control System Based on MBSE
1 Introduction
2 Construction of Cost Design and Control System Based on MBSE
2.1 Formulate MBSE-Based Cost Design and Control Top-Level Planning to Strengthen Overall Control
2.2 Overhaul of the Cost and Price Modelling Database and Integration of Costs into the MBSE Model and Its Design
2.3 Scientific Application of MBSE-Based Trade-Off Theory to Solve the Cost Design Problem Before the Programme is Finalized
2.4 Dynamically Combining the MBSE Model with Corporate Resources to Implement Cost Control Measures After the Programme is Finalized
2.5 Deep Integration of MBSE-Based Information Technology Platform to Strengthen the Foundation of Digital Design and Management
3 Conclusion
References
Improving Communication Efficiency in Federated Learning via Metaheuristic-Based Learning Algorithms
1 Introduction
2 Related Work
2.1 Federated Learning
2.2 Traditional African Vulture Algorithm
2.3 Improvements to the African Vulture Algorithm
3 Proposed Methodology
4 Experimental Section
4.1 Experimental Set-Up
4.2 Experimental Results
5 Summary and Discussion
References
A Novel Approach for Quantifying the Wrinkling Degree of Cured Tobacco Using Unsupervised Depth Estimation
1 Introduction
2 Materials and Methods
2.1 Materials and Equipment
2.2 Modeling
2.3 Unsupervised Depth Estimation Model Training
2.4 Evaluation Indicators
3 Results and Analysis
3.1 Evaluation of Improved Deep Estimation Network Model
3.2 Evaluation of Texture Extraction Methods
4 Conclusion
5 Fund Project
References
Integrated Assembly and Disassembly Sequence Planning for Multifunctional Complex Products
1 Introduction
2 Literature Review
3 Method
4 Case Study
5 Conclusion
References
A High-End Equipment Real-Time Virtual-Real Interaction Implementation Based on Digital Twin
1 Introduction
2 Digital Twin Framework for High-End Equipment
3 Key Technologies of High-End Equipment DT
3.1 Operational Data Collection, Fusion, and Transmission
3.2 Virtual Entity Construction Based on Historical and Real-Time Data
4 Implementation Case
4.1 High-End Engineering Equipment DT Platform
4.2 Digital Twin Mappings
4.3 Testing Result
4.4 Virtual Control
5 Conclusion
References
Mechanism and Robot Design
An Approach for Analysing the Coupling Effects Between Dynamics and Tooth Surface Wear in a Helical Gear Transmission System
1 Introduction
2 Dynamic Modelling of a Helical Gear Transmission System
3 Time-Varying Meshing Stiffness Modelling of Helical Gear Pairs
4 Wear Modelling of a Helical Gear Tooth Surface
5 Modelling of the Coupling Effects Between Dynamics and Tooth Surface Wear in a Helical Gear Transmission
5.1 Calculation of Time-Varying Meshing Stiffness of a Helical Gear Under Dynamic Wear
5.2 Calculation of Dynamic Responses of Helical Gear Transmission Under Dynamic Wear
5.3 Solution Strategy for the Coupling Effects Between Dynamics and Tooth Wear in a Helical Gear Transmission
6 Numerical Example and Result Discussion
6.1 Parameters of the Helical Gear System Used in Simulation
6.2 Dynamic Response of the Helical Gear Transmission System Without Tooth Surface Wear
6.3 Time-Varying Meshing Stiffness and Backlash of a Helical Gear Pair Under Dynamic Wear
6.4 Tooth Surface Wear Characteristics of a Helical Gear with the Working Time Accumulated
6.5 Dynamic Characteristics of the Helical Gear Transmission System with Accumulated Tooth Wear
7 Conclusion
References
Research on the Motion Accuracy Reliability of Rigid-Flexible Coupling Mechanism with Lubrication Clearances
1 Introduction
2 Establishment of Lubrication Clearance Model
2.1 Mathematical Model of Lubrication Clearance
2.2 Modeling of Oil Film Load of Lubrication Clearance
3 Establishment of Flexible Rod Element Model
3.1 The ANCF Method
3.2 Mass Matrix and Elastic Force of Rod Element
4 Establishment of Dynamic Model of Rigid-Flexible Coupling Mechanism with Lubrication Clearances
5 Establishment of Motion Accuracy Reliability Model of Mechanism
5.1 Stress-Strength Interference Theory
5.2 Response Surface Surrogate Model
6 Motion Accuracy Reliability Analysis of Mechanism with Lubrication Clearances
6.1 Solving Process and Initial Parameters
6.2 Dynamics Analysis of Rigid-Flexible Coupling Mechanisms with Lubrication Clearances
6.3 Motion Accuracy Reliability Analysis of Rigid-Flexible Coupling Mechanisms with Lubrication Clearances
7 Conclusion
References
Influence of Tooth Surface Friction on Dynamic Meshing Characteristics of Elliptic Gears
1 Introduction
2 Establishment of LTCA Model of Elliptic Gear
2.1 Analysis Principle of LTCA
2.2 Central Difference Method
2.3 Establishment of LTCA Model of Elliptic Gear
3 Simulation Analysis
3.1 Influence of Friction Coefficient on Meshing Characteristics of Tooth Surface
3.2 Influence of Friction Coefficient on Tooth Surface Stress
3.3 Influence of Friction Coefficient on Tooth Displacement
4 Conclusions
References
A Novel Airbag Aided Differential-Drive Capsule Robot Towards Colonoscopy
1 Introduction
2 Robot System
2.1 Design Considerations
2.2 Design of the Robot
2.3 Parameters of Candidate Motors
3 Output Force Control of the Robot
3.1 Modelling of Statistics
3.2 Characteristics of the Robot
3.3 Control Method
4 Experiments
4.1 Effect of Force Control
4.2 Motion of the Robot
5 Conclusions
References
Path Planning of Mobile Robot Based on Bresen-Ham Line Algorithm Improved A* Algorithm
1 Introduction
2 Environment Modeling and Algorithm Introduction
2.1 Map Building
2.2 Obstacle Setting
2.3 Introduction to the Principle of the A* Algorithm
3 Improve the A* Algorithm
3.1 The Heuristic Function Fused with the Bresen-Ham Line Algorithm
3.2 Smoothness Processing
4 Analysis of Simulation Results
5 Conclusion
References
Design and Analysis of a Reconfigurable Joint
1 Introduction
2 Structural Analysis of Reconfigurable Joint
2.1 Structural Design
2.2 Structural Analysis
3 Characteristic Analysis of Reconfigurable Joint
4 Constraint Analysis of Reconfigurable Limb
4.1 Configuration Analysis of 5-DOF Limb
4.2 Configuration Analysis of 4-DOF Limb
4.3 Configuration Analysis of 3-DOF Limb
5 Discussion
6 Conclusion
References
Study on Mechanism Design and Posture Control of a Wheel-Legged Vehicle
1 Introduction
2 Design of the Wheel-Legged Vehicle
2.1 Mechanism Design
2.2 Function Design
3 Motion Analysis
3.1 Forward Kinematic Model
3.2 Inverse Kinematic Model
4 Posture Control
5 Simulation Analysis
5.1 Height Motion
5.2 Roll Motion
5.3 Pitch Motion
6 Conclusion
References
Supportless Cylindrical Printing of Rotating Components with Overhangs on a Rotary FDM 3D Printer
1 Introduction
2 Materials and Methods
2.1 The System Architecture of Cylindrical Printing
2.2 Process Planning of Cylindrical Printing
2.3 Validation with Cylindrical Printing
3 Results and Discussion
4 Conclusion
References
Visual Relocalization Optimization of Mobile Robot via Combining AprilTag with ORBSLAM3
1 Introduction
2 System Overview
3 Hybrid Feature Relocalization Optimization Mechanism
3.1 ORB Feature Point Extraction
3.2 Bag of Words Model
3.3 AprilTag Coding System
3.4 Hybrid Feature Candidate Keyframe Judgement
3.5 Hybrid Feature Pose Optimisation
4 Experiment
4.1 Experimental Design
4.2 Integration of Hybrid Feature Judgement Weights
4.3 Time Consuming Relocalization in Dynamic Scenes
5 Conclusion
6 Future Work
References
LQR Optimal Composite Control for Mobile Robot Trajectory Tracking System Based on LPV Model
1 Introduction
2 Dynamic Model of FSMR
3 LPV-Based LQR Optimal Composite Controller Design
3.1 LPV Representation of the Tracking Model
3.2 LQR-Based Feedback Controller Design
3.3 Feedforward Controller Design
3.4 Angle Distribution Based on Ackermann Steering Geometry
4 Simulation Verification
4.1 Case 1: Variable Speed Condition
4.2 Case 2: Variable Friction Coefficient Condition
5 Conclusion
References
Leg Parameters Optimization of Wheel-Legged Vehicle Based on Trot Gait
1 Introduction
2 Wheel-Legged Vehicle Modeling
2.1 Kinematic Model
2.2 Single Rigid Body Dynamics
2.3 Inverse Dynamics
3 Leg Parameter Optimization Method
3.1 Trot Gait Trajectory Planning
3.2 Multibody Dynamics Simulation
3.3 Parameter Optimization Problem
4 Simulation and Results
5 Conclusion
References
Mechanism Design of a Self-submersible Planetary Drilling and Sampling Robot
1 Introduction
2 General Specifications
2.1 Functional Requirement
2.2 Drilling and Sampling Sequence
3 Mechanism Design
3.1 Anchoring and Feeding Mechanism
3.2 Rotation and Percussion Mechanism
3.3 Coring Mechanism
4 Conclusion and Future Work
References
Free Vibration Analysis of Rotating Functionally Graded Joined Cylindrical-Conical-Cylindrical Shells with Arbitrary Boundary Conditions
1 Introduction
2 JCCCS Model
3 Energy Equation of the Rotating JCCCS
4 Modal Frequency Equation
5 Verification
6 Results and Discussions
6.1 Effects of Gradient Exponent
6.2 Effects of Classical Boundary Conditions
6.3 Effects of Arbitrary Boundary Conditions
7 Conclusions
References
Dynamics Characteristics Analysis of Rack Railway Guiding Equipment of Mountain Rack Railway Train with Considering Wheel-Rail Contact
1 Introduction
2 MBD Theory and Modeling
2.1 Theory of MBD
2.2 MBD Modeling for RRGE
3 Factors Affecting the Acceleration Effect of Gear in the Lead-In Section
3.1 Train Passing Speed
3.2 Vertical Distance
3.3 Initial Gear Posture
4 Factors Affecting the Adjustment Role of the Correction Section Rollers
4.1 Train Passing Speed
4.2 Gear Entry Condition
5 Combination of Parameters for Smooth Operation of the Rack in the Meshing Section
6 Conclusions
References
A Closed-Chain Ship Welding Robot: Design, Singularity and Dexterity
1 Introduction
2 Configuration and Position Analysis
2.1 The Four-Bar (Loop T1) Mechanism
2.2 The Five-Bar (Loop T2) Mechanism
2.3 The Four-Bar (Loop T3) Mechanism
2.4 Series-Parallel Hybrid Mechanism
2.5 Velocity Jacobian Matrix
3 Singularity and Workspace Analysis
4 Numeral Examples
5 Conclusions
References
Effects of Bluff Body Cross-Section on the Electrical Response of a Piezoelectric Energy Harvester Under Hybrid Excitation
1 Introduction
2 Theoretical Analysis
2.1 Mechatronic Dynamic Equations
2.2 Modal Coordinate Equations
2.3 Decoupling of Dynamic Equations
2.4 Galloping Aerodynamic Equations
3 Results and Discussions
3.1 Various Bluff Body Cross-Sections
3.2 Electrical Response Analysis
4 Conclusion
References
Kinematics Analysis of Vehicle-Parallel Manipulator System Based on Delta Robot
1 Introduction
2 UVPMS Model
3 Kinematics Analysis of UVPMS
4 Kinematics Positive and Inverse Solution
5 Conclusion
References
Integrated Error Modeling and Experimental Verification of 2UPR&2RPS-XY Type Five-Axis Hybrid Machine Tool
1 Introduction
2 Description of the 2UPR&2RPS-XY Hybrid Machine Tool
3 Integrated Error Modeling of Hybrid Machine Tool
4 Error Model Validation
4.1 Error Model Simulation
4.2 Double Ball Bar Test
5 Conclusions
References
Dexterity Analysis of an Colonoscopy Surgical Manipulator Combined with Spherical Joint and Cable-Driven Mechanism
1 Introduction
2 Principles and Methods
3 Cable Length and Workspace Analysis
3.1 Cable Length Analysis
3.2 Workspace
4 Design Verification and Simulation
5 Conclusions
References
Dynamics Modeling and Analysis of a 3T1R Four-Degree-of-Freedom Parallel Robot with Full-Circle Rotation Capability
1 Introduction
2 Kinematic Analysis
2.1 Introduction to Parallel Robots
2.2 Position Analysis
3 Kinetic Modeling
4 Numerical Simulation
5 Conclude
References
Unmanned Roller Based on Visual SLAM
1 Introduction
2 Construction of Unmanned Roller System
2.1 Environmental Perception Module for Unmanned Rollers
2.2 Decision Planning Module for Unmanned Roller
2.3 Execution Control Module of Unmanned Roller
3 ORB-SLAM2 System
3.1 Principle of ORB Feature Point Extraction
3.2 ORB-SLAM2 Algorithm
4 Trajectory Planning
5 Unmanned Roller System Testing
6 Conclusion
References
Design and Analysis of Rigid Continuous Deformation Mechanism Based on Heterogeneous Unit
1 Introduction
2 Structure Design
3 Analysis of Mobility and Configuration for Unit
4 Kinematic Model
5 Control Strategy
6 Equivalent Stiffness of RCDM
7 Conclusion
References
Design and Analysis of a Novel Soft Pneumatic Actuator with Bidirectional Adjustable Bending Function
1 Introduction
2 The Newly Proposed Soft Pneumatic Actuator
3 Theoretical Analysis and Simulation of the Actuator
4 Conclusions
References
Kinematics and Performance Analysis of a Hybrid Mechanism with Reconfigurability
1 Introduction
2 Description of the Hybrid Mechanism
3 Reconfiguration Model and DOF Analysis of Hybrid Mechanism
4 Kinematic Analysis of the Hybrid Mechanism with Different Reconfiguration Modes
4.1 Established Theoretical Mathematical Model
4.2 Inverse Kinematic Analysis of the Hybrid Mechanism
4.3 Velocity Jacobi Matrix Analysis of Hybrid Mechanism
5 Performance Analysis of Hybrid Mechanism with Different Reconfiguration Modes
5.1 Workspace Analysis
5.2 Dexterity Analysis
5.3 Stiffness Analysis
6 Conclusion
References
Design and Prototype Verification of Multi-fold Rib Deployable Antenna Mechanism
1 Introduction
2 Scheme Design
2.1 Overall Scheme
2.2 Module Structure Design
3 Spatial Geometric Modeling
4 Prototype Development and Technical Indicator Verification
4.1 Prototype Development
4.2 Technical Indicator Verification
5 Conclusions
References
Rigid-Flexible Coupling Dynamics Analysis of Multi-output Transient Deployment Mechanism Based on ANCF
1 Introduction
2 Multi-output Transient Deployment Mechanism Dynamics Modeling
2.1 Establishment of Global Coordinate System and Generalized Coordinates
2.2 Generalized Mass
2.3 Generalized Stiffness
2.4 Generalized External Force
2.5 System Dynamics Equations
3 Dynamics Model Solving
4 Analysis of Results
5 Analysis of Influencing Factors on Rigid-Flexible Coupled Dynamic Response
5.1 The Effect of Driving Force for Transient Motion
5.2 The Effect of Material of Elastic Components
6 Conclusions
References
Traveling Wave Modal Frequency Analysis of Rotating Functional Gradient Carbon Nanotubes Conical Shells
1 Introduction
2 Model Description
2.1 Cone Shell Model
2.2 FGMs Model
3 Vibration Analysis
3.1 Energy Equation
3.2 Chebyshev Polynomial
3.3 Characteristic Equation
4 Model Validation
5 Analysis and Discussion
5.1 Influence of Gradient Exponent
5.2 Influence of Boundary Condition
5.3 Influence of Volume Fraction of Carbon Nanotubes
6 Conclusion
References
Design of Sliding Mode Tracking Control System for Radiograph Shooting Robot Based on Camera Vision Center Position
1 Introduction
2 Kinematics Model of RSR
2.1 Conversion of Workspace and Joint Angle Position
2.2 Hyperbolic Tangent Function
3 Position Dynamics Model of RSR
3.1 Dynamic Equation of End Position
3.2 Design of Sliding Mode Controller for RSR
4 Camera Visual Center Tracking
4.1 Camera Calibration
4.2 Face Recognition
4.3 Tracking Center Positioning
5 Camera Visual Center Tracking
5.1 Simulation Experiment of RSR Control System
5.2 Visual Center Tracking Experiment
6 Conclusion
References
Research on the Identification Method of Colour-Based Status Indicator Based on Feature Matching
1 Introduction
2 System Structure
3 Algorithm Design
3.1 Object Detection
3.2 State Recognition
4 Experimental Results and Analysis
5 Conclusion
References
Driving-Stepping Locomotion Control for Wheel-Legged Robots
1 Introduction
2 Robot Configuration and Kinematic Model
3 Torque Control Strategies for Support State and Swing State
3.1 4-Wheel Support State Control
3.2 2-Wheel Support State Control
4 Driving-Stepping Locomotion Control
4.1 Control Architecture Overview
4.2 Foot Hold Planner
4.3 Wheel Controller
5 Simulation
6 Conclusion
References
Multi-objective Trajectory Optimization of 6-DOF Manipulator Based on Improved NSGA-II Algorithm
1 Introduction
2 Trajectory Planning
2.1 B-spline Interpolation
2.2 Objective Function Construction
3 The Improved NSGA-II
3.1 Improved Selection Algorithm
3.2 Improved Crossover and Mutation Algorithm
3.3 Algorithm Flow
3.4 Algorithm Comparison Verification
4 Simulation Verification
4.1 Manipulat Modeling
4.2 Comparative Experiment
5 Conclusions
References
Design of Dynamic Grasping Vision Servo System Based on Pyramid Optimization Interception Algorithm
1 Introduction
2 Dynamic Grasping Visual Servo Control Scheme
3 Grasping Pose Calculation Module
4 End-Effector Position Calculation Module
4.1 Spatial Coordinate Transformation Relationship
4.2 Camera Calibration
4.3 Hand-Eye Calibration
5 Pyramidal Search Optimization Algorithm
6 Experimental Validation
7 Conclusion
References
A Hybrid Algorithm for Dynamic Path Planning of Mobile Robot Using Improved A* and DWA
1 Introduction
2 Methodology
2.1 Global Path Planning Based on Improved A* Algorithm
2.2 Local Path Planning Based on Improved DWA Algorithm
2.3 Combination of Global Path Planning and Local Path Planning
3 Numerical Results and Discussion
3.1 Testing Scheme
3.2 Simulation Experiment of Improved A* Algorithm
3.3 Simulation Experiment of Improved A* Integrating Improved DWA
4 Conclusion
References
Motion/Force Transmissibility of a 5-DOF Parallel Driving Mechanism
1 Introduction
2 Mechanism Description
3 Wrench and Twist Screw Analysis
4 Motion/Force Performance Analysis
5 Conclusion
References
Design of Automatic Control System for the Laying of Waterproof Plate in Tunnel Construction
1 Introduction
2 Structural Design of Automatic Welding System for Flashing
2.1 System Composition
2.2 System Work Process
3 Automatic Welding Control System Design for Waterproof Plate
3.1 Laying Process Design
3.2 Control Programme Writing
4 Pilot Test
5 Conclusion
References
Dimension Design of a Novel Multi-morphology Transformable Mobile Robot
1 Introduction
2 Mechanism Overview and Kinematics
2.1 Mechanism Overview and Kinematics
2.2 Kinematic Modelling
3 Optimum Dimension Design Strategy
4 Optimum Dimension Design Model
4.1 Optimization Parameters
4.2 Constraint Condition
4.3 Performance Indices
5 Optimization Design of the Transformable Mechanism
5.1 Physical Model of the Design Space
5.2 Performance Atlases of the Transformable Mechanism
5.3 Optimum Parameters Selection
6 Optimization Design of the WLS Mechanism on Hexapod Morphology
6.1 Physical Model of the Design Space
6.2 Performance Atlases
6.3 Optimum Parameters Selection
7 Optimization Design of the WLS Mechanism on Wheel Morphology
7.1 Physical Model of the Design Space
7.2 Performance Atlases
7.3 Optimum Parameters Selection
8 Dimension Parameter Calculation
9 Conclusion
References
An FBG-Based Clamping Force Sensor for Intervertebral Foraminoscopic Surgery
1 Introduction
2 Sensor Design
2.1 Structural Design
2.2 Theoretical Calculation
2.3 Simulation Analysis
2.4 Clamping Force Sensor Preparation
3 Experimental Verification
4 Conclusion
References
Industrial Software and Major Equipment Integrated Design
The Management System of the Whole Cycle Supply Chain of Large Aircraft Based on Collaborative Development
1 Preface
2 Related Concepts of Supplier and Supply Chain Management
3 Supplier Management System of Large Aircraft Development
3.1 Technical Features of Large Aircraft Development
3.2 Optimized Design of Supplier Management System for Large Aircraft
4 Conclusions
References
Theoretical Analysis of the Bearing Faults Impact on Large Aperture Antenna Pointing Accuracy
1 Introduction
2 Theoretical Analysis for Antenna Pointing Error
2.1 Antenna Pointing Accuracy
2.2 Impact of Pitch Axis Error on Pointing Accuracy
3 Nonlinear Dynamic Model of Large Aperture Antenna Transmission System
3.1 Bearing Dynamics Modeling
3.2 Rotor Dynamics
3.3 Bearing Distribution Fault Model
3.4 Bearing Localized Fault Model
3.5 Bearing Wear Fault Model
3.6 Coupled Dynamics Model
4 The Impact of Different Types of Faults on Pointing Accuracy
4.1 Typical Fault Effects of Components
4.2 Diagnosis of Time-Varying Faults
5 Conclusion
References
Design and Fabrication of an SOI Optical Switch with Backside Release for Anti-high-Overload
1 Introduction
2 Structure Design
3 Microfabrication
3.1 Structure Micromachining
3.2 Anodic Bonding
4 Experimental Results
5 Conclusion
References
Analysis of Electromagnetic Wave Propagation Characteristics in Building Walls
1 Introduction
2 Shielding Effectiveness and Electromagnetic Shielding Mechanism of Reinforced Concrete
2.1 Principle Analysis of Electromagnetic Shielding of Reinforced Concrete
2.2 Derivation of Electromagnetic Propagation Equations in Reinforced Concrete
3 Simulation Analysis of Shielding Effectiveness of Reinforced Concrete
3.1 Simulation Model Building
3.2 Effect of Structural Parameters of Reinforced Concrete on Shielding Effectiveness
3.3 Effect of Electrical Parameters of Reinforced Concrete on Shielding Effectiveness
3.4 Effect of Structural Parameters and Layout of Steel Reinforcement on Shielding Effectiveness
4 Conclusion
References
Modeling and Simulation of Nonlinear Dynamics for Coupled Motor-Reducer Systems Based on Bond Graph
1 Introduction
2 Fundamental Concepts of Bond Graphs
3 Bond Graph Model of Electromechanical Coupling System
3.1 The Bond Graph Model of Tooth Surface Friction
3.2 Engagement Stiffness Bond Graph Model Considering the Ruler Side Gap
3.3 Gear Bond Graph Model Considering Errors
3.4 Gear Transmission System Bond Graph Model
3.5 Permanent Magnet DC Motor Bonding Diagram Model
3.6 Bond Graph Model of Motor-Reducer Coupling System
4 System Dynamic Characteristics Simulation
4.1 Simulation Parameters Determination
4.2 Analysis of Simulation Results
5 Conclusion
References
Design and Experiments of a Regolith Environment Simulator for Lunar Polar Region Exploration
1 Introduction
2 System Design
2.1 Function Requirements Analysis
2.2 Vacuum Acquisition System
2.3 Vacuum Chamber System
2.4 Cooling System
2.5 Monitoring System
3 Experiments and Results
3.1 Lunar Regolith Simulant
3.2 Experimental Results
4 Conclusion
References
Visualized Performance Evaluation of 3D CAD Software Based on Hierarchical Clustering Considering the Uncertainties in Insufficient Test Data
1 Introduction
2 Credible Scores of Performance Indexes Calculated Based on Insufficient Test Data
3 Similarity Evaluation of Software Performance Based on Their Credible Scores
4 Performance Clustering Based on the Minimum Increment of Overall Variance
5 Visualized Performance Analysis Based on the Heat Map
6 Flowchart of the Proposed Performance Evaluation Method
7 Case Study
7.1 Visualized Performance Evaluation Results Based on the Proposed Method
7.2 Comparison with the Results When Ignoring the Influence of Uncertainties
7.3 Comparison with the Evaluation Results Obtained by AHP
8 Conclusions
References
Visualized Performance Evaluation of 3D CAD Software Based on Rich Test Data and Radial Clustering Considering Credibility
1 Introduction
2 Calculation of Credible Scores Based on Rich Test Data
3 Radial Projection of Credible Scores Based on Force Balance
4 Performance Analysis Based on the Radviz Radar Map
5 Description of the Proposed Performance Evaluation Method
6 Verification of the Proposed Performance Evaluation Method
6.1 Determination of Performance Indexes and Their Normalized Scores
6.2 Visualized Performance Evaluation Based on the Proposed Method
6.3 Comparison with the Evaluation Results When Ignoring Credibility
6.4 Comparison with the Evaluation Results Based on AHP
7 Conclusions
References
Development of Ultra-Precision Large-Stroke OLED Inkjet Printing Equipment
1 Introduction
2 Inkjet Printing Equipment Structure
2.1 Printhead and Printing Accuracy
2.2 Motion Stage
2.3 Vibration Control
2.4 Measuring System
2.5 Micro-environment Control
3 Measurement Data and Print Test
4 Conclusion
References
Development of Fast Installation System for Large Scale Model of FL-10 Wind Tunnel
1 Introduction
2 Overview of Installation Equipment for Large-Scale Models
2.1 FL-10 Wind Tunnel
2.2 Model and Support
2.3 Supporting Mechanism
3 Large Size Model Quick Installation System Design
3.1 Movable Lift Truck
3.2 Model Truck
3.3 Tail Support Clamping Mechanism
3.4 Single-Support Rod Clamping Mechanism
3.5 Stiffness Analysis of Key Components of the System
4 Test Verification
5 Conclusion
References
Study on Influences of Interference-Fit Assembly on Dynamic Characteristics of a 10 MW Planetary Gear Train with Flexible Pins
1 Introduction
2 Basic Description of PGT-FP
3 Dynamic Modeling of PGT-FP
3.1 FEM Model of the Carrier Pin Assembly
3.2 Modeling of Ring Gear and Carrier Pin Assembly
3.3 Modeling of Sun Shaft and Bearing Supporting
3.4 Modeling of Gear Meshes with the Interference Fit
3.5 Modeling of PGT-FP
4 Gear Mesh Excitation with DLTCA
5 Results and Discussions
5.1 Comparison of Quasi-Static Mesh Stiffness
5.2 Effects of Vibration Displacements on Dynamic Mesh Excitations
5.3 Effects of Interference Fit on Dynamic Responses
6 Conclusions
References
Fast Prediction of Structural Stress Field Using Point Cloud Deep Learning
1 Introduction
2 The Proposed Filed Metamodel Method
2.1 Field Distribution Calculation by FEA
2.2 Geometry Representation via Point Clouds
2.3 Network Architecture
3 Application
3.1 Sample Generation
3.2 Training of Point Cloud Deep Neural Networks
3.3 Results Analysis
4 Conclusion
References
Research on Synchronization Control Strategy of Dual Drive Feed System by Using Single Neuron PID
1 Introduction
2 Modelling of Rigid-Flexible Coupling Dynamics of DDFS
2.1 Modeling of Mechanical System of DDFS
2.2 Rigid-Flexible Coupling Dynamics Modeling of Mechanical System of DDFS
3 Modeling of Electromechanical Rigid-Flexible Coupling of DDFS
3.1 Design of Mechanical and Electrical Rigid-Flexible Coupling Scheme
3.2 Design of Servo Control System
4 Design of Synchronous Control Strategy Based on SN-PID
5 Simulation and Experiment Verification of the Synchronous Control Strategy
5.1 Simulation Analysis
5.2 Experimental Analysis
6 Conclusion
References

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Advances in Mechanical Design

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