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By John R. Brauer
"An obtainable, finished consultant on magnetic actuators and sensors, this absolutely up to date moment variation of Magnetic Actuators and Sensors contains the most recent advances, a number of labored calculations, illustrations, and real-life functions. masking magnetics, actuators, sensors, and platforms, with updates of recent applied sciences and methods, this exemplary studying software emphasizes computer-aided layout techniques,
"Like the 1st version, this ebook can be for working towards engineers and engineering scholars concerned with the layout and alertness of magnetic actuators and sensors"-- Read more...
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Batdorff MA, Lumkes JH. High-fidelity magnetic equivalent circuit model for an axisymmetric electromagnetic actuator. IEEE Trans Magn 2009;45:3064–3072. 5. Brauer JR, Hirtenfelder F. Anisotropic materials in electromagnetic finite element analysis, Conference on Computation in Electromagnetics, London, November 1991. 6. Valstyn EP, Hadiono T. The transfer function of a ferrite head. IEEE Trans Magn 1990;26:2424–2426. 7. Payne A, Cain W, Hempstead R, McCrea G. Measuring core losses in thin film heads.
Tensor material properties are used in Chapter 10. An important property of magnetic permeability to be discussed next is the nonlinear B–H curve. Such nonlinearity is exhibited by all ferromagnetic materials. 23), is only applicable for low values of flux density. For high values of flux density, saturation is said to occur. Flux no longer flows as easily, similar to a towel being saturated with water and no longer picking up as much liquid. The ratio B/H gradually decreases and thus the permeability is no longer a constant.
2 Functional F with a minimum having zero slope (derivative). TRIANGULAR ELEMENTS FOR MAGNETOSTATICS Besides the energy functional, the second main requirement of finite-element analysis is to discretize (break up) the volume analyzed into small pieces called finite elements. The most basic finite element is the triangle. 2 shows the simplest triangular finite element for magnetostatic fields. It lies in the xy plane and its magnetic flux density B is assumed to lie in the same plane. As in the reluctance examples of the preceding chapter, the planar B is produced by a current coming out of the plane.