Adaptive Control Design for Hysteresis Compensation within Piezoelectric Actuators
نویسندگان
چکیده
Hysteresis nonlinearity of piezoelectric actuator deteriorates its control performance. Unlike traditional model-based control scheme, this paper employs a novel adaptive control algorithm without modeling of hysteresis to achieve a precise tracking control. The piezoelectric actuator system in question consists of models in the form of a linear time-invariant dynamic system in series with a differential hysteresis model. The hysteresis can be transformed into general uncertainties to the system. Then an adaptive control algorithm can be applied. By implementing this control scheme on the piezoelectric actuator system and comparing its result to the result of a PID controller, the effectiveness of this controller is verified.
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