Abstract
The inherent frequency-dependent hysteresis nonlinearities of magnetostrictive actuator prominently limit its performance. In this paper, a hybrid hysteresis model comprising a frequency-independent hysteresis model cascaded an adaptive finite impulse response filter is developed to improve the performance of actuators. For the frequency-independent part, a generalized Prandtl-Ishlinskii model that have analytical inversion is adopted. Besides, a modified coral reefs optimization algorithm is applied to identify the parameters to improve the model accuracy. The adaptive filter is utilized to adapt to the rate-dependent characteristic. The model validation results show that the hybrid model can satisfactorily describe the frequency-dependent hysteresis.
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