Magnetic actuators and sensors
John R. Brauer ; IEEE Magnetic Society, sponsor.
Bok Engelsk 2006 · Electronic books.
| Utgitt | Hoboken, NJ : Piscataway, NJ : : Wiley ; : IEEE Press, , c2006.
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| Omfang | 1 online resource (322 p.)
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| Opplysninger | Description based upon print version of record.. - MAGNETIC ACTUATORS AND SENSORS; Contents; Preface; PART I MAGNETICS; 1. Introduction; 1.1 Overview of Magnetic Actuators; 1.2 Overview of Magnetic Sensors; 1.3 Actuators and Sensors in Motion Control Systems; References; 2. Basic Electromagnetics; 2.1 Vectors; 2.1.1 Gradient; 2.1.2 Divergence; 2.1.3 Curl; 2.2 Ampere's Law; 2.3 Magnetic Materials; 2.4 Faraday's Law; 2.5 Potentials; 2.6 Maxwell's Equations; Problems; References; 3. Reluctance Method; 3.1 Simplifying Ampere's Law; 3.2 Applications; 3.3 Fringing Flux; 3.4 Complex Reluctance; 3.5 Limitations; Problems; References. - 10.5.3 Newest Forms of Magnetoresistance. - 4. Finite-Element Method4.1 Energy Conservation and Functional Minimization; 4.2 Triangular Elements for Magnetostatics; 4.3 Matrix Equation; 4.4 Finite-Element Models; Problems; References; 5. Magnetic Force; 5.1 Magnetic Flux Line Plots; 5.2 Magnetic Energy; 5.3 Magnetic Force on Steel; 5.4 Magnetic Pressure on Steel; 5.5 Lorentz Force; 5.6 Permanent Magnets; 5.7 Magnetic Torque; Problems; References; 6. Other Magnetic Performance Parameters; 6.1 Magnetic Flux and Flux Linkage; 6.1.1 Definition and Evaluation; 6.1.2 Relation to Force and Other Parameters; 6.2 Inductance. - 6.2.1 Definition and Evaluation6.2.2 Relation to Force and Other Parameters; 6.3 Capacitance; 6.3.1 Definition; 6.3.2 Relation to Energy and Force; 6.4 Impedance; Problems; References; PART II ACTUATORS; 7. Magnetic Actuators Operated by Direct Current; 7.1 Solenoid Actuators; 7.1.1 Clapper Armature; 7.1.2 Plunger Armature; 7.2 Voice Coil Actuators; 7.3 Other Actuators Using Coils and Permanent Magnets; 7.4 Proportional Actuators; 7.5 Rotary Actuators; Problems; References; 8. Magnetic Actuators Operated by Alternating Current; 8.1 Skin Depth; 8.2 Power Losses in Steel; 8.2.1 Laminated Steel. - 8.2.2 Equivalent Circuit8.2.3 Solid Steel; 8.3 Force Pulsations; 8.3.1 Force with Single AC Coil; 8.3.2 Force with Added Shading Coil; 8.4 Cuts In Steel; 8.4.1 Special Finite-Element Formulation; 8.4.2 Loss and Reluctance Computations; Problems; References; 9. Magnetic Actuator Transient Operation; 9.1 Basic Timeline; 9.2 Size, Force, and Acceleration; 9.3 Linear Magnetic Diffusion Times; 9.3.1 Steel Slab Turnon and Turnoff; 9.3.2 Steel Cylinder; 9.4 Nonlinear Magnetic Diffusion Time; 9.4.1 Simple Equation for Steel Slab with "Step" B-H. - 9.4.2 Transient Finite-Element Computations for Steel Slabs9.4.3 Simple Equation for Steel Cylinder with "Step" B-H; 9.4.4 Transient Finite-Element Computations for Steel Cylinders; Problems; References; PART III SENSORS; 10. Hall Effect and Magnetoresistive Sensors; 10.1 Simple Hall Voltage Equation; 10.2 Hall Effect Conductivity Tensor; 10.3 Finite-Element Computation of Hall Fields; 10.3.1 Unsymmetric Matrix Equation; 10.3.2 2D Results; 10.3.3 3D Results; 10.4 Toothed Wheel Hall Sensors for Position; 10.5 Magnetoresistance; 10.5.1 Classical Magnetoresistance; 10.5.2 Giant Magnetoresistance. - This practical text features computer-aided engineering methods for the design and application of magnetic actuators and sensors, using the latest software tools. John Brauer highlights the use of the electromagnetic finite element software package Maxwell? SV and introduces readers to applications using SPICE, MATLAB?, and Simplorer?. A free download of Maxwell? SV is available at the Ansoft site, and the software files for the examples are available at ftp://ftp.wiley.com/public/sci_tech_med/magnetic_actuators.The text is divided into four parts:* Part One, Magnetics, offers an i
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| Dewey | |
| ISBN | 0-470-32513-5. - 0-471-77770-6. - 0-471-77771-4. - 1-280-31173-8. - 1-60119-088-3. - 9786610311736
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