Description

# Permanent Magnet and Electromechanical Devices

Materials, Analysis, and Applications

Electromagnetism Series

## Author: Furlani Edward P.

Language: Anglais## Subject for *Permanent Magnet and Electromechanical Devices*:

Publication date: 09-2001

518 p. · 15.2x22.9 cm · Hardback

518 p. · 15.2x22.9 cm · Hardback

## Description

/li>## Contents

/li>## Readership

/li>## Biography

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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.

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.

Preface

1. Materials

Introduction

Units

Classification of Materials

Atomic Magnetic Moments

Single electron atoms

Multielectron atoms

Paramagnetism

Ferromagnetism

Magnetostatic Energy

Demagnetization Field

Anisotropy

Magnetocrystalline Anisotropy

Shape Anisotropy

Domains

Hysteresis

Soft Magnetic Materials

Hard Magnetic Materials

Ferrites

Alnico

Samarium-Cobalt

Neodymium-iron-boron

Bonded Magnets

Magnetization

Stability

2. Review of Maxwell's Equations

Introduction

Maxwell's Equations

Constitutive Relations

Integral Equations

Boundary Conditions

Force and Torque

Potentials

Quasi-static Theory

Static Theory

Magnetostatic Theory

Electrostatic Theory

Summary

3. Field Analysis

Introduction

Magnetostatic Analysis

Vector Potential

Force and Torque

Maxwell Stress Tensor

Energy

Inductance

The Current Model

The Charge Model

Force

Torque

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

Introduction

Magnet Structures

Rectangular Structures

Cylindrical Structures

High Field Structures

Magnetic Latching

Magnetic Suspension

Magnetic Gears

Magnetic Couplings

Magnetic Resonance Imaging

Electrophotography

Magneto-Optical Recording

Free-Electron Lasers

5. Electromechanical Devices

Introduction

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

Units

1. Materials

Introduction

Units

Classification of Materials

Atomic Magnetic Moments

Single electron atoms

Multielectron atoms

Paramagnetism

Ferromagnetism

Magnetostatic Energy

Demagnetization Field

Anisotropy

Magnetocrystalline Anisotropy

Shape Anisotropy

Domains

Hysteresis

Soft Magnetic Materials

Hard Magnetic Materials

Ferrites

Alnico

Samarium-Cobalt

Neodymium-iron-boron

Bonded Magnets

Magnetization

Stability

2. Review of Maxwell's Equations

Introduction

Maxwell's Equations

Constitutive Relations

Integral Equations

Boundary Conditions

Force and Torque

Potentials

Quasi-static Theory

Static Theory

Magnetostatic Theory

Electrostatic Theory

Summary

3. Field Analysis

Introduction

Magnetostatic Analysis

Vector Potential

Force and Torque

Maxwell Stress Tensor

Energy

Inductance

The Current Model

The Charge Model

Force

Torque

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

Introduction

Magnet Structures

Rectangular Structures

Cylindrical Structures

High Field Structures

Magnetic Latching

Magnetic Suspension

Magnetic Gears

Magnetic Couplings

Magnetic Resonance Imaging

Electrophotography

Magneto-Optical Recording

Free-Electron Lasers

5. Electromechanical Devices

Introduction

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

Units

Engineers, applied mathematicians, and physicists; Materials scientists - magnetic materials; Technicians engaged in the development, manufacturing or characterization of permanent magnet materials, permanent magnet devices, or electromechanical devices; electrical engineering students.

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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