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Nonlinear diffusion and the Preisach model of hysteresis

机译:非线性扩散和磁滞Preisach模型

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摘要

Subtle and interesting connections between the Preisach model of hysteresis and nonlinear diffusion are discussed. On this basis, Preisach modeling of eddy current hysteresis and superconducting hysteresis is presented. It is stressed that rate-dependent eddy current hysteresis can be fully characterized by its step response. Preisach representation of eddy current hysteresis is then used for the calculation of eddy current losses and the universality of the 'f~2-law' for these losses is emphasized. Experimental results that provide evidence for remarkable accuracy of the Preisach description of superconducting hysteresis are presented.
机译:讨论了磁滞的Preisach模型与非线性扩散之间的细微而有趣的联系。在此基础上,提出了涡流磁滞和超导磁滞的Preisach模型。需要强调的是,其阶跃响应可以充分表征速率相关的涡流磁滞现象。涡流磁滞的preisach表示然后用于涡流损耗的计算,并且强调了这些损耗的“ f-2律”的普遍性。提出的实验结果为超导磁滞现象的Preisach描述的非凡准确性提供了证据。

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