Advanced Computational and Design Techniques in Applied Electromagnetic Systems

Description

This symposium was concerned with advanced computational and design techniques in applied electromagnetic systems including devices and materials. The scope of the proceedings cover a wide variety of topics in applied electromagnetic fields: optimal design techniques and applications, inverse problems, advanced numerical techniques, mechanism and dynamics of new actuators, physics and applications of magnetic levitation, electromagnetic propulsion and superconductivity, modeling and applications of magnetic fluid, plasma and arc discharge, high-frequency field computations, electronic device simulations and magnetic materials.

Front Cover 2
Advanced Computational and Design Techniques in Applied Electromagnetic Systems 5
Copyright Page 6
PREFACE 7
Table of Contents 9
INTERNATIONAL STEERING COMMITTEE 23
LOCAL STEERING COMMITTEE 24
ORGANIZING COMMITTEE 24
CONTRIBUTORS 25
EXHIBITORS 26
Part 1: Optimal Design Techniques and Applications 27
- Chapter 1. Automated optimal design of a permanent magnet excited dc motor with global evolution strategy and FEM 29
  - 3. OPTIMISATION METHOD 29
  - 1. ABSTRACT 29
  - 2. INTRODUCTION 29

Front Cover 2
Advanced Computational and Design Techniques in Applied Electromagnetic Systems 5
Copyright Page 6
PREFACE 7
Table of Contents 9
INTERNATIONAL STEERING COMMITTEE 23
LOCAL STEERING COMMITTEE 24
ORGANIZING COMMITTEE 24
CONTRIBUTORS 25
EXHIBITORS 26
Part 1: Optimal Design Techniques and Applications 27
- Chapter 1. Automated optimal design of a permanent magnet excited dc motor with global evolution strategy and FEM 29
  - 3. OPTIMISATION METHOD 29
  - 1. ABSTRACT 29
  - 2. INTRODUCTION 29
  - 4. FIELD COMPUTATION 31
  - 5. PROBLEM DESCRIPTION AND RESULTS 31
  - REFERENCES 32
- Chapter 2. Non-Linear Constrained Optimisation Techniques for Magnetostatic Problems 33
  - 1. INTRODUCTION 33
  - 2. CONSTRAINED QUASI-NEWTON METHODS 34
  - 3. NUMERICAL EXAMPLES 35
  - 4. CONCLUSIONS 36
  - REFERENCES 36
- Chapter 3. Sensitivity Analysis and Optimization of Chip Layout on Printed Circuit Board 37
  - 1. INTRODUCTION 37
  - 2. SUBDOMAIN DESIGN SENSITIVITY ANALYSIS 37
  - 3. NUMERICAL EXAMPLES 39
  - 5. CONCLUSION 40
  - REFERENCES 40
- Chapter 4. The application of case-based reasoning to the initial design of electromagnetic devices 41
  - Abstract 41
  - 1. INTRODUCTION 41
  - 2. THE CASE-BASED DESIGN PROCESS 42
  - 3. FEATURE EXTRACTION 42
  - REFERENCES 44
  - 4. CONCLUSIONS 44
- Chapter 5. 3-D finite element analysis of electromagnetic forces on contact systems in low voltage circuit breakers 45
  - 1. INTRODUCTION 45
  - 2. METHOD OF ANALYSIS 46
  - 3. ANALYZED MODEL 46
  - 4. RESULTS AND DISCUSSIONS 47
  - 5. CONCLUSIONS 48
  - REFERENCES 48
- Chapter 6. Investigation of flux density for 3-D electromagnetic force calculation using Maxwell stress tensor 49
  - 2. METHOD OF NUMERICAL ANALYSIS 49
  - 1. INTRODUCTION 49
  - 3. RESULTS AND DISCUSSION 50
  - REFERENCES 52
  - 4. CONCLUSIONS 52
- Chapter 7. Automatic shape design of solenoid valve using finite element method 53
  - 1. INTRODUCTION 53
  - 2. CALCULATION MODEL AND METHOD 54
  - 3. CALCULATION RESULTS 55
  - 4. CONCLUSIONS 56
  - REFERENCE 56
- Chapter 8. An optimum design and characteristic analysis for a butt-lap-step joint core of amorphous distribution transformer 57
  - 1. INTRODUCTION 57
  - 2. NUMERICAL FORMULATION 58
  - 3. SIMULATION RESULTS 59
  - 4. CONCLUSIONS 60
  - REFERENCES 60
- Chapter 9. Optimized Cylindrical Magnetic Shielding Vessels 61
  - 2. FORMULATION 61
  - Abstract 61
  - 1. INTRODUCTION 61
  - 3. RESULTS AND DISCUSSIONS 63
  - REFERENCES 64
  - 4. CONCLUSIONS 64
- Chapter 10. Dew-point measurement in the decarburising of Electrical steels 65
  - 1. Introduction 65
  - 2. Primary system requirements 65
  - 3. Hardware description 66
  - 4. Software description 67
  - 5. Materials testing 67
  - 6. Mirror construction 67
  - References 68
  - 7. Results and discussion 68
  - 8. Conclusions 68
- Chapter 11. Genetic algorithms applied to design optimization 69
  - 2. Design Optimization Environment 69
  - 1. Introduction 69
  - 3. Shape Optimization of a Pole Face 70
  - 4. Results 71
  - 5. Conclusion 72
  - References 72
- Chapter 12. Ground State Configurations of Two-Dimensional Coulomb Gas with Fractional Charges: A Genetic Optimization Algorithm 73
  - 1. INTRODUCTION 73
  - 3. SIMULATION RESULTS 74
  - 2. GENETIC ALGORITHM 74
  - 4. CONCLUSIONS 76
  - REFERENCES 76
- Chapter 13. Optimum design of linear induction motor for subway by neural network and SUMT 77
  - 2. FINITE ELEMENT ANALYSIS 77
  - 1. INTRODUCTION 77
  - 3. SUMT WITH A NEURAL NETWORK 78
  - 4. RESULTS 79
  - 5. CONCLUSION 80
  - Acknowledgement 80
  - REFERENCES 80
- Chapter 14. Efficiency Optimized Design of Interior Permanent Magnet Synchronous Motors Using Simulated Annealing 81
  - 1. Introduction 81
  - Abstract 81
  - 2. Compensation of Air Gap Flux Density and Inductances 82
  - 3. Efficiency Optimized Design 82
  - 4. Comparison between the Prototype Motor and the Optimized Motor 83
  - 5. Conclusion 84
  - REFERENCES 84
- Chapter 15. The shape optimization of magnetic deflection system using evolution strategy 85
  - 1. INTRODUCTION 85
  - Abstract 85
  - 2. THE OPTIMIZATION OF SADDLE TYPE COIL CONFIGURATION 86
  - 3. NUMERICAL EXAMPLE 87
  - 4. CONCULUTION 88
  - REFERENCES 88
- Chapter 16. Thermodynamic calculation and optimization of the B-Si phase diagram 89
  - 1. Introduction 89
  - 2. Optimization 89
  - 3. Results 90
  - ACKNOWLEDGMENT 90
  - REFERENCES 92
- Chapter 17. An Improved 3-D Edge Finite Element Method for Eddy-Current Analysis of Induction Furnace Using Sliced Models 93
  - 1. INTRODUCTION 93
  - 3. ANALYZED MODEL 94
  - 2. PROPOSED METHOD 94
  - 4. OBTAINED RESULTS 95
  - 5. CONCLUSIONS 96
  - REFERENCES 96
- Chapter 18. Optimal shape design of brushless DC motors using evolution strategy 97
  - 1. INTRODUCTION 97
  - 2. CLASSICAL DESIGN METHOD 98
  - 3. OPTIMIZATION ALGORITHM 98
  - 4. DESIGN EXAMPLE 99
  - REFERENCES 100
  - 5. CONCLUSION 100
- Chapter 19. Core Shape Design of Electrical Devices for Iron Loss Reduction 101
  - 1. INTRODUCTION 101
  - 2. SENSITIVITY ANALYSIS 101
  - Abstract 101
  - 3. NUMERICAL EXAMPLES 103
  - REFERENCES 104
  - 4. CONCLUSION 104
  - ACKNOWLEDGEMENT 104
- Chapter 20. Topological Optimization for Matched Waveguide Load in H-plane 105
  - 2. FINITE ELEMENT FORMULATION 105
  - 1. INTRODUCTION 105
  - 3. SENSITIVITY ANALYSIS 107
  - 4. NUMERICAL EXAMPLES 107
  - REFERENCES 108
  - 5. CONCLUSION 108
  - ACKNOWLEDGEMENT 108
- Chapter 21. Applications of FEM Eletiic-Field Computation Program to The Optimal Design of GIS and GCB 109
  - 1. Introduction 109
  - Abstract 109
  - 2. Insulation design using electric-field analysis program for GIS 110
  - REFERENCES 112
  - 3. CONCLUSION 112
- Chapter 22. An Effective Magnetic Circuit Technique for Reducing Distortion in Loudspeaker Sound Quality 113
  - Abstract 113
  - 1. INTRODUCTION 113
  - 3. ACTUATING FORCE OF VOICE COIL 114
  - 2. EQUILIBRIUM EQUATIONS 114
  - 4. COMPENSATION COIL 115
  - 5. CONCLUSION 115
  - 6. REFERENCES 116
- Chapter 23. The performance analysis of separate-type transformers by 3-D FEM 117
  - 1. INTRODUCTION 117
  - 2. ANALYTICAL MODEL 117
  - 3. PERFORMANCE ANALYSIS 118
  - 4. CONCLUSIONS 120
  - REFERENCE 120
- Part 2: Inverse Problems 121
  - Chapter 24. Application of wavelet analysis to an inverse problem in eddy current testing 123
    - 2. WAVELET APPROXIMATION 123
    - 1. INTRODUCTION 123
    - 3. INVERSE PROBLEM FORT 124
    - 5. NUMERICAL RESULTS 125
    - 4. CHARACTERIZATION OF CRACK 125
    - 6. CONCLUSIONS 126
    - REFERENCES 126
  - Chapter 25. Nondestructive evaluation inverse problems 127
    - 1. ELLIPTIC NDE PHENOMENA 127
    - 2. PARABOLIC NDE PHENOMENA 128
    - REFERENCES 130
    - 3. HYPERBOLIC NDE PHENOMENA 130
    - 4. CONCLUDING REMARKS 130
  - Chapter 26. Noninvasive imaging of cardiac activation 131
    - 1. THEORY 131
    - 2. METHODS 132
    - 3. RESULTS 133
    - 4. DISCUSSION 134
    - REFERENCES 134
  - Chapter 27. Inverse Analysis of a Potential Problem by Symbolic Computation 135
    - Abstract 135
    - 1. Introduction 135
    - 2. Charge Simulation Method 135
    - 3. Example 136
    - References 137
    - 4. Concluding Remarks 137
  - Chapter 28. Optimization approach to image reconstruction 139
    - 2. MATHEMATICAL FORMULATION 139
    - 1. INTRODUCTION 139
    - 3. OBJECTIVE FUNCTION DEFINITION 140
    - 5. RESULTS OF RECONSTRUCTION 141
    - 6. CONCLUSION 141
    - 4. SENSITIVITY ANALYSIS 141
    - REFERENCES 142
  - Chapter 29. Defect identification in magnetic materials by using genetic algorithm 143
    - 2. HYBRID METHOD 143
    - 1. INTRODUCTION 143
    - 3. EXAMPLES AND DISCUSSION 145
    - REFERENCES 146
    - 4. CONCLUSION 146
  - Chapter 30. Effect of Thermal Fatigue on Barkhausen Noise in rotational field 147
    - 1. INTRODUCTION 147
    - 2. EXPERIMENTAL METHOD 148
    - 3. Results and discussions 148
    - 4. CONCLUSION 149
    - REFERENCES 149
  - Chapter 31. An improved method of estimation for residual magnetization integrating BEM and magnetic field measurement 151
    - 2. FORMULATION OF METHOD 151
    - Abstract 151
    - 1. INTRODUCTION 151
    - 3. ANALYSIS RESULTS AND DISCUSSION 153
    - REFERENCES 154
    - 4. CONCLUSION 154
  - Chapter 32. Magnetic field analysis of eddy current testing with impulse response by boundary element method 155
    - 1. INTRODUCTION 155
    - 2. FORMULATION 156
    - 3. RESULTS AND DISCUSSION 157
    - 4. CONCLUSION 158
    - REFERENCES 158
  - Chapter 33. 3-D eddy current analysis for crack model on ECT using A and ϕ iteration method 159
    - Abstract 159
    - 1. INTRODUCTION 159
    - 2. ANALYSIS METHOD 159
    - 3. ANALYSIS RESULTS AND VERIFICATION BY EXPERIMENTS 160
    - REFERENCES 162
    - 4. CONCLUSIONS 162
  - Chapter 34. Nearly real-time crack sizing using measured impedance data 163
    - 1. INTRODUCTION 163
    - 2. MEASUREMENT PROCEDURE 163
    - Abstract 163
    - 3. EXAMPLES FOR CRACK SIZING USING MEASURED IMPEDANCE DATA 165
    - 2. SIZING THE CRACKS 165
    - REFERENCES 166
    - 4. CONCLUSIONS 166
  - Chapter 35. Magnetic Sensor Using Progressive Magnetic Flux 167
    - 1. INTRODUCTION 167
    - Abstract 167
    - 2. Magnetic sensor using progressive magnetic flux 168
    - 3. Analytical result 168
    - 4. Conclusions 170
    - REFERENCES 170
  - Chapter 36. AN INVERSE APPROACH TO OPTIMAL EXCITING COE DESIGN 171
    - 2. THE OPTIMAL EXCITING COIL DESIGN 171
    - Abstract 171
    - 1. INTRODUCTION 171
    - 3. CONCLUSION 174
    - REFERENCES 174
  - Chapter 37. Reconstruction of underground dielectric objects using the conjugate gradient method 175
    - 2. FORMULATION OF THE PROBLEM 175
    - 1. INTRODUCTION 175
    - 3. NUMERICAL RESULTS 177
    - REFERENCES 178
    - 4. CONCLUSION 178
  - Chapter 38. Rough surface inverse scattering within the Kirchhoff approximation 179
    - 2. PROBLEM FORMULATION 179
    - 1. INTRODUCTION 179
    - 3. SIMULATED RESULT 181
    - 4. CONCLUSION 182
    - REFERENCES 182
  - Chapter 39. Upgrade of Micro Eddy Current Testing 183
    - 1. INTRODUCTION 183
    - 2. PRINCIPLE 183
    - 3. EXPERIMENT 184
    - REFERENCES 186
    - 4. CALCULATION 186
    - 5. CONCLUSION 186
  - Chapter 40. The application of artificial neural network to defect characterization in eddy current NDT 187
    - 2. EDDY CURRENT TESTING 187
    - 1. INTRODUCTION 187
    - 5. CONCLUSION 189
    - 3. DEFECT CHARACTERIZATION USING ANN 189
    - 4. NUMERICAL EXAMPLE 189
    - REFERENCES 190
  - Chapter 41. An Iterative Inversion Method for a Perfectly Conducting Cylinder on Angular Spectral Domain 191
    - 2. Angular Spectrum 191
    - Abstract 191
    - 1. Introduction 191
    - 3. Approximate shape and center 193
    - 4. Numerical Results 193
    - References 194
  - Chapter 42. Automatic ECT Data Analysis of Steam Generator Tubings by Using Neural Network 195
    - 1. INTRODUCTION 195
    - 2. DATA - ACQUISITION 195
    - 3. RESULTS 196
    - 4. CONCLUSION 198
    - REFERENCES 198
  - Chapter 43. Defect Characterization in Eddy Current NDT by (μ+λ) Evolution Strategy 199
    - 2. FINITE ELEMENT FORMULATION 199
    - Abstract 199
    - 1. INTRODUCTION 199
    - 3. EVOLUTION STRATEGY 200
    - 5. CONCLUSION 201

Proceedings of the International ISEM Symposium on Advanced Computational and Design Techniques in Applied Electromagnetic Systems, Seoul, Korea, 22-24 June, 1994

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