Brauer, John R., 1943-
Magnetic actuators and sensors / John R. Brauer. - Second edition. - 1 PDF (xvii, 377 pages) : illustrations.
Includes bibliographical references.
PREFACE xi -- PREFACE TO THE FIRST EDITION xiii -- LIST OF 66 EXAMPLES xv -- PART I MAGNETICS 1 -- 1 Introduction 3 -- 1.1 Overview of Magnetic Actuators 3 -- 1.2 Overview of Magnetic Sensors 4 -- 1.3 Actuators and Sensors in Motion Control Systems 5 -- 1.4 Magnetic Actuators and Sensors in Mechatronics 7 -- References 8 -- 2 Basic Electromagnetics 9 -- 2.1 Vectors 9 -- 2.2 Ampere's Law 14 -- 2.3 Magnetic Materials 17 -- 2.4 Faraday's Law 22 -- 2.5 Potentials 25 -- 2.6 Maxwell's Equations 28 -- Problems 29 -- References 31 -- 3 Reluctance Method 33 -- 3.1 Simplifying Ampere's Law 33 -- 3.2 Applications 37 -- 3.3 Fringing Flux 40 -- 3.4 Complex Reluctance 41 -- 3.5 Limitations 41 -- Problems 42 -- References 42 -- 4 Finite-Element Method 43 -- 4.1 Energy Conservation and Functional Minimization 43 -- 4.2 Triangular Elements for Magnetostatics 45 -- 4.3 Matrix Equation 46 -- 4.4 Finite-Element Models 49 -- Problems 53 -- References 53 -- 5 Magnetic Force 55 -- 5.1 Magnetic Flux Line Plots 55 -- 5.2 Magnetic Energy 60 -- 5.3 Magnetic Force on Steel 61 -- 5.4 Magnetic Pressure on Steel 65 -- 5.5 Lorentz Force 66 -- 5.6 Permanent Magnets 67 -- 5.7 Magnetic Torque 72 -- 5.8 Magnetic Volume Forces on Permeable Particles 73 -- Problems 75 -- References 76 -- 6 Other Magnetic Performance Parameters 79 -- 6.1 Magnetic Flux and Flux Linkage 79 -- 6.2 Inductance 82 -- 6.3 Capacitance 86 -- 6.4 Impedance 88 -- Problems 91 -- References 91 -- PART II ACTUATORS 93 -- 7 Magnetic Actuators Operated by DC 95 -- 7.1 Solenoid Actuators 95 -- 7.2 Voice Coil Actuators 106 -- 7.3 Other Actuators Using Coils and Permanent Magnets 108 -- 7.4 Proportional Actuators 109 -- 7.5 Rotary Actuators 112 -- 7.6 Magnetic Bearings and Couplings 114 -- 7.7 Magnetic Separators 117 -- Problems 125 -- References 127 -- 8 Magnetic Actuators Operated by AC 129 -- 8.1 Skin Depth 129 -- 8.2 Power Losses in Steel 130 -- 8.3 Force Pulsations 135 -- 8.4 Cuts in Steel 139 -- References 145 -- 9 Magnetic Actuator Transient Operation 147. 9.1 Basic Timeline 147 -- 9.2 Size, Force, and Acceleration 148 -- 9.3 Linear Magnetic Diffusion Times 150 -- 9.4 Nonlinear Magnetic Infusion Times 156 -- 9.5 Nonlinear Magnetic Effusion Time 164 -- 9.6 Pulse Response of Nonlinear Steel 169 -- Problems 171 -- References 174 -- PART III SENSORS 175 -- 10 Hall Effect and Magnetoresistive Sensors 177 -- 10.1 Simple Hall Voltage Equation 177 -- 10.2 Hall Effect Conductivity Tensor 179 -- 10.3 Finite-Element Computation of Hall Fields 182 -- 10.4 Hall Sensors for Position or Current 190 -- 10.5 Magnetoresistance 193 -- 10.6 Magnetoresistive Heads for Hard Disk Drives 194 -- 10.7 Giant Magnetoresistive Spin Valve Sensors 195 -- Problems 198 -- References 198 -- 11 Other Magnetic Sensors 201 -- 11.1 Speed Sensors Based on Faraday's Law 201 -- 11.2 Inductive Recording Heads 203 -- 11.3 Proximity Sensors Using Impedance 206 -- 11.4 Linear Variable Differential Transformers 210 -- 11.5 Magnetostrictive Sensors 213 -- 11.6 Fluxgate Sensors 215 -- 11.7 Chattock Coil Field and Current Sensor 219 -- 11.8 Squid Magnetometers 222 -- 11.9 Magnetoimpedance and Miniature Sensors 223 -- 11.10 MEMS Sensors 224 -- Problems 225 -- References 226 -- PART IV SYSTEMS 229 -- 12 Coil Design and Temperature Calculations 231 -- 12.1 Wire Size Determination for DC Currents 231 -- 12.2 Coil Time Constant and Impedance 234 -- 12.3 Skin Effects and Proximity Effects for AC Currents 235 -- 12.4 Finite-Element Computation Of Temperatures 239 -- Problems 246 -- References 246 -- 13 Electromagnetic Compatibility 249 -- 13.1 Signal-To-Noise Ratio 249 -- 13.2 Shields and Apertures 250 -- 13.3 Test Chambers 255 -- Problems 260 -- References 260 -- 14 Electromechanical Finite Elements 263 -- 14.1 Electromagnetic Finite-Element Matrix Equation 263 -- 14.2 0D and 1D Finite Elements for Coupling Electric Circuits 266 -- 14.3 Structural Finite-Element Matrix Equation 272 -- 14.4 Force and Motion Computation by Time Stepping 273 -- 14.5 Typical Electromechanical Applications 275. Problems 286 -- References 286 -- 15 Electromechanical Analysis Using Systems Models 289 -- 15.1 Electric Circuit Models of Magnetic Devices 289 -- 15.2 VHDL-AMS/Simplorer Models 296 -- 15.3 MATLAB/Simulink Models 301 -- 15.4 Including Eddy Current Diffusion Using a Resistor 307 -- 15.5 Magnetic Actuator Systems for 2D Planar Motion 312 -- 15.6 Optimizing Magnetic Actuator Systems 313 -- Problems 324 -- References 325 -- 16 Coupled Electrohydraulic Analysis Using Systems Models 327 -- 16.1 Comparing Hydraulics and Magnetics 327 -- 16.2 Hydraulic Basics and Electrical Analogies 328 -- 16.3 Modeling Hydraulic Circuits in Spice 330 -- 16.4 Electrohydraulic Models in Spice and Simplorer 334 -- 16.5 Hydraulic Valves and Cylinders in Systems Models 341 -- 16.6 Magnetic Diffusion Resistor in Electrohydraulic Models 348 -- 16.7 Optimization of an Electrohydraulic System 352 -- 16.8 Magnetic Actuators for Digital Hydraulics 353 -- Problems 357 -- References 357 -- APPENDIX A: SYMBOLS, DIMENSIONS, AND UNITS 359 -- APPENDIX B: NONLINEAR B-H CURVES 361 -- APPENDIX C: FINAL ANSWERS FOR ODD-NUMBERED PROBLEMS 367 -- INDEX 371.
Restricted to subscribers or individual electronic text purchasers.
"An accessible, comprehensive guide on magnetic actuators and sensors, this fully updated second edition of Magnetic Actuators and Sensors includes the latest advances, numerous worked calculations, illustrations, and real-life applications. Covering magnetics, actuators, sensors, and systems, with updates of new technologies and techniques, this exemplary learning tool emphasizes computer-aided design techniques, especially magnetic finite element analysis, commonly used by today's engineers. Detailed calculations, numerous illustrations, and discussions of discrepancies make this text an invaluable learning tool for practicing engineers and engineering students"--R�aesum�ae de l'�aediteur "Like the first edition, this book will be for practicing engineers and engineering students involved with the design and application of magnetic actuators and sensors"--R�aesum�ae de l'�aediteur
Mode of access: World Wide Web
9781118779262
10.1002/9781118779262 doi
Actuators.
Detectors.
Electronic books.
TJ223.A25 / .B73 2013eb
621.34
Magnetic actuators and sensors / John R. Brauer. - Second edition. - 1 PDF (xvii, 377 pages) : illustrations.
Includes bibliographical references.
PREFACE xi -- PREFACE TO THE FIRST EDITION xiii -- LIST OF 66 EXAMPLES xv -- PART I MAGNETICS 1 -- 1 Introduction 3 -- 1.1 Overview of Magnetic Actuators 3 -- 1.2 Overview of Magnetic Sensors 4 -- 1.3 Actuators and Sensors in Motion Control Systems 5 -- 1.4 Magnetic Actuators and Sensors in Mechatronics 7 -- References 8 -- 2 Basic Electromagnetics 9 -- 2.1 Vectors 9 -- 2.2 Ampere's Law 14 -- 2.3 Magnetic Materials 17 -- 2.4 Faraday's Law 22 -- 2.5 Potentials 25 -- 2.6 Maxwell's Equations 28 -- Problems 29 -- References 31 -- 3 Reluctance Method 33 -- 3.1 Simplifying Ampere's Law 33 -- 3.2 Applications 37 -- 3.3 Fringing Flux 40 -- 3.4 Complex Reluctance 41 -- 3.5 Limitations 41 -- Problems 42 -- References 42 -- 4 Finite-Element Method 43 -- 4.1 Energy Conservation and Functional Minimization 43 -- 4.2 Triangular Elements for Magnetostatics 45 -- 4.3 Matrix Equation 46 -- 4.4 Finite-Element Models 49 -- Problems 53 -- References 53 -- 5 Magnetic Force 55 -- 5.1 Magnetic Flux Line Plots 55 -- 5.2 Magnetic Energy 60 -- 5.3 Magnetic Force on Steel 61 -- 5.4 Magnetic Pressure on Steel 65 -- 5.5 Lorentz Force 66 -- 5.6 Permanent Magnets 67 -- 5.7 Magnetic Torque 72 -- 5.8 Magnetic Volume Forces on Permeable Particles 73 -- Problems 75 -- References 76 -- 6 Other Magnetic Performance Parameters 79 -- 6.1 Magnetic Flux and Flux Linkage 79 -- 6.2 Inductance 82 -- 6.3 Capacitance 86 -- 6.4 Impedance 88 -- Problems 91 -- References 91 -- PART II ACTUATORS 93 -- 7 Magnetic Actuators Operated by DC 95 -- 7.1 Solenoid Actuators 95 -- 7.2 Voice Coil Actuators 106 -- 7.3 Other Actuators Using Coils and Permanent Magnets 108 -- 7.4 Proportional Actuators 109 -- 7.5 Rotary Actuators 112 -- 7.6 Magnetic Bearings and Couplings 114 -- 7.7 Magnetic Separators 117 -- Problems 125 -- References 127 -- 8 Magnetic Actuators Operated by AC 129 -- 8.1 Skin Depth 129 -- 8.2 Power Losses in Steel 130 -- 8.3 Force Pulsations 135 -- 8.4 Cuts in Steel 139 -- References 145 -- 9 Magnetic Actuator Transient Operation 147. 9.1 Basic Timeline 147 -- 9.2 Size, Force, and Acceleration 148 -- 9.3 Linear Magnetic Diffusion Times 150 -- 9.4 Nonlinear Magnetic Infusion Times 156 -- 9.5 Nonlinear Magnetic Effusion Time 164 -- 9.6 Pulse Response of Nonlinear Steel 169 -- Problems 171 -- References 174 -- PART III SENSORS 175 -- 10 Hall Effect and Magnetoresistive Sensors 177 -- 10.1 Simple Hall Voltage Equation 177 -- 10.2 Hall Effect Conductivity Tensor 179 -- 10.3 Finite-Element Computation of Hall Fields 182 -- 10.4 Hall Sensors for Position or Current 190 -- 10.5 Magnetoresistance 193 -- 10.6 Magnetoresistive Heads for Hard Disk Drives 194 -- 10.7 Giant Magnetoresistive Spin Valve Sensors 195 -- Problems 198 -- References 198 -- 11 Other Magnetic Sensors 201 -- 11.1 Speed Sensors Based on Faraday's Law 201 -- 11.2 Inductive Recording Heads 203 -- 11.3 Proximity Sensors Using Impedance 206 -- 11.4 Linear Variable Differential Transformers 210 -- 11.5 Magnetostrictive Sensors 213 -- 11.6 Fluxgate Sensors 215 -- 11.7 Chattock Coil Field and Current Sensor 219 -- 11.8 Squid Magnetometers 222 -- 11.9 Magnetoimpedance and Miniature Sensors 223 -- 11.10 MEMS Sensors 224 -- Problems 225 -- References 226 -- PART IV SYSTEMS 229 -- 12 Coil Design and Temperature Calculations 231 -- 12.1 Wire Size Determination for DC Currents 231 -- 12.2 Coil Time Constant and Impedance 234 -- 12.3 Skin Effects and Proximity Effects for AC Currents 235 -- 12.4 Finite-Element Computation Of Temperatures 239 -- Problems 246 -- References 246 -- 13 Electromagnetic Compatibility 249 -- 13.1 Signal-To-Noise Ratio 249 -- 13.2 Shields and Apertures 250 -- 13.3 Test Chambers 255 -- Problems 260 -- References 260 -- 14 Electromechanical Finite Elements 263 -- 14.1 Electromagnetic Finite-Element Matrix Equation 263 -- 14.2 0D and 1D Finite Elements for Coupling Electric Circuits 266 -- 14.3 Structural Finite-Element Matrix Equation 272 -- 14.4 Force and Motion Computation by Time Stepping 273 -- 14.5 Typical Electromechanical Applications 275. Problems 286 -- References 286 -- 15 Electromechanical Analysis Using Systems Models 289 -- 15.1 Electric Circuit Models of Magnetic Devices 289 -- 15.2 VHDL-AMS/Simplorer Models 296 -- 15.3 MATLAB/Simulink Models 301 -- 15.4 Including Eddy Current Diffusion Using a Resistor 307 -- 15.5 Magnetic Actuator Systems for 2D Planar Motion 312 -- 15.6 Optimizing Magnetic Actuator Systems 313 -- Problems 324 -- References 325 -- 16 Coupled Electrohydraulic Analysis Using Systems Models 327 -- 16.1 Comparing Hydraulics and Magnetics 327 -- 16.2 Hydraulic Basics and Electrical Analogies 328 -- 16.3 Modeling Hydraulic Circuits in Spice 330 -- 16.4 Electrohydraulic Models in Spice and Simplorer 334 -- 16.5 Hydraulic Valves and Cylinders in Systems Models 341 -- 16.6 Magnetic Diffusion Resistor in Electrohydraulic Models 348 -- 16.7 Optimization of an Electrohydraulic System 352 -- 16.8 Magnetic Actuators for Digital Hydraulics 353 -- Problems 357 -- References 357 -- APPENDIX A: SYMBOLS, DIMENSIONS, AND UNITS 359 -- APPENDIX B: NONLINEAR B-H CURVES 361 -- APPENDIX C: FINAL ANSWERS FOR ODD-NUMBERED PROBLEMS 367 -- INDEX 371.
Restricted to subscribers or individual electronic text purchasers.
"An accessible, comprehensive guide on magnetic actuators and sensors, this fully updated second edition of Magnetic Actuators and Sensors includes the latest advances, numerous worked calculations, illustrations, and real-life applications. Covering magnetics, actuators, sensors, and systems, with updates of new technologies and techniques, this exemplary learning tool emphasizes computer-aided design techniques, especially magnetic finite element analysis, commonly used by today's engineers. Detailed calculations, numerous illustrations, and discussions of discrepancies make this text an invaluable learning tool for practicing engineers and engineering students"--R�aesum�ae de l'�aediteur "Like the first edition, this book will be for practicing engineers and engineering students involved with the design and application of magnetic actuators and sensors"--R�aesum�ae de l'�aediteur
Mode of access: World Wide Web
9781118779262
10.1002/9781118779262 doi
Actuators.
Detectors.
Electronic books.
TJ223.A25 / .B73 2013eb
621.34