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Permanent Magnet and Electromechanical Devices. Electromagnetism

  • ID: 1769329
  • Book
  • September 2001
  • 518 Pages
  • Elsevier Science and Technology
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The book provides both the theoretical and the applied background needed to predict magnetic fields. The theoretical presentation is reinforced with over 60 solved examples of practical engineering applications such as the design of magnetic components like solenoids, which are electromagnetic coils that are moved by electric currents and activate other devices such as circuit breakers. Other design applications would be for permanent magnet structures such as bearings and couplings, which are hardware mechanisms used to fashion a temporary connection between two wires.

This book is written for use as a text or reference by researchers, engineers, professors, and students engaged in the research, development, study, and manufacture of permanent magnets and electromechanical devices. It can serve as a primary or supplemental text for upper level courses in electrical engineering on electromagnetic theory, electronic and magnetic materials, and electromagnetic engineering.
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1. Materials
Classification of Materials
Atomic Magnetic Moments
Single electron atoms
Multielectron atoms
Magnetostatic Energy
Demagnetization Field
Magnetocrystalline Anisotropy
Shape Anisotropy
Soft Magnetic Materials
Hard Magnetic Materials
Bonded Magnets

2. Review of Maxwell's Equations
Maxwell's Equations
Constitutive Relations
Integral Equations
Boundary Conditions
Force and Torque
Quasi-static Theory
Static Theory
Magnetostatic Theory
Electrostatic Theory

3. Field Analysis
Magnetostatic Analysis
Vector Potential
Force and Torque
Maxwell Stress Tensor
The Current Model
The Charge Model
Magnetic Circuit Analysis
Current Sources
Magnet Sources
Boundary-Value Problems
Cartesian Coordinates
Cylindrical Coordinates
Spherical Coordinates
Method of Images
Finite Element Analysis
Finite Difference Method

4. Permanent Magnet Applications
Magnet Structures
Rectangular Structures
Cylindrical Structures
High Field Structures
Magnetic Latching
Magnetic Suspension
Magnetic Gears
Magnetic Couplings
Magnetic Resonance Imaging
Magneto-Optical Recording
Free-Electron Lasers

5. Electromechanical Devices
Device Basics
Quasi-static Field Theory
Stationary Reference Frame
Moving Reference Frames
Electrical Equations
Stationary Circuits
Moving Coils
Mechanical Equations
Electromechanical Equations
Stationary Circuits
Moving Coils
Energy Analysis
Magnetic Circuit Actuators
Axial-Field Actuators
Resonant Actuators
Magneto-Optical Bias Field Actuator
Linear Actuators
Axial-Field Motors
Stepper Motors
Hybrid Analytical-FEM Analysis
Magnetic MEMS

Vector Analysis
Cartesian Coordinates
Cylindrical Coordinates
Spherical Coordinates
Integrals of Vector Functions
Theorems and Identities
Coordinate Transformations
Green's Function
Systems of Equations
Euler's Method
Improved Euler Method
Runge-Kutta Methods
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Furlani, Edward P.
Dr. Edward Furlani holds BS degrees in both physics and electrical engineering, and MS and PhD degrees in theoretical physics from the State University of New York at Buffalo. He is currently a research associate in the research laboratories of the Eastman Kodak Company, which he joined in 1982. He has worked in the area of applied magnetics for over 15 years. His research in this area has involved the design and development of numerous magnetic devices and processes. He has extensive experience in the analysis and simulation of a broad range of magnetic applications including rare-earth permanent magnet structures, magnetic drives and suspensions, magnetic circuits, magnetic brush subsystems in the electrophotographic process, magnetic and magneto-optic recording, high-gradient magnetic separation, and electromechanical devices such as transducers, actuators and motors. His current research activity is in the area of microsystems and involves the analysis and simulation of various micro-electromechanical systems (MEMS) including light modulators, microactuators and microfluidic components. Dr. Furlani has authored over 40 publications in scientific journals and holds over 100 US patents.
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