压电驱动晶体的特性研究

压电陶瓷迟滞特性是影响压电陶瓷驱动器位移输出精度的主要因素。在仔细研究现有的解决方案的基础上，采用Preisach模型对压电的迟滞性进行建模，并进行了相应的实验研究。实验结果证明该方法可以很好地降低压电陶瓷迟滞特性对位移输出性能的影响。而且采用压电陶瓷位移输出不回复到初始0电压状态的处理方法能够更地吻合实际情况。

Study on the Hysteresis Property of Piezoelectric Actuator

Hysteresis characteristic is the main factor affecting the accuracy of PZT's output displacement. Here,based on the Preisach model,a mathematical model to reduce the influence of hysteresis was built, and the corresponding experiments were carried out. The results show this model can decrease the histeresis influence on the output displacement effectively. Moreover, it is more appropriate to the practical situation with the method that does not force the PZT's displacement output to return to the initial zero-voltage status.