Frequent-dependent Dynamic Hysteresis Model of Giant Magnetostrictive Actuator

Abstract

Abstract: The Jiles-Atherton static magnetization model is extended to a dynamic magnetization model by considering the frequency-dependent eddy current loss and anomalous loss of the giant magnetostrictive actuator. A dynamic hysteresis model is established based on the dynamic magnetization model and the structural dynamic principle of the actuator. Moreover, a genetic algorithm is used to identify the parameters of the model. Experimental results show that the proposed model can better describe the dynamic hysteresis characteristics of the actuator in a wide frequency range. Therefore, the model has important significance for performance estimation and controller design of the actuator.

Key words: Hysteresis nonlinearity, Dynamic magnetization model, Giant magnetostrictive actuator (GMA), Parameter identification

CLC Number:

TP271

ZHENG Jiaju;WANG Hongli;CAO Shuying. Frequent-dependent Dynamic Hysteresis Model of Giant Magnetostrictive Actuator[J]. , 2008, 44(7): 38-44.

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Frequent-dependent Dynamic Hysteresis Model of Giant Magnetostrictive Actuator

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