Piezoelectric Stack Actuators (PEAs) have been widely used in high-precision positioning system because of its fast response. However, under different excitation voltages and external loads with dynamic frequencies, the width and inclination of PEAs hysteresis curves verified correspondingly, and exhibit asymmetry phenomenon. The main contribution of this paper is to present a two-input asymmetric dynamic cross-coupled hysteresis (TADCH) model to describe the complex nonlinear hysteresis of PEAs in dynamic excitation and loading engineering applications. Moreover, we also develop the corresponding identification method of TADCH model. Finally, several experiments are carried out to verify the accuracy of the proposed model.

中文翻译：

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压电堆栈执行器的新型两输入非对称动态交叉耦合滞后建模与辨识

压电堆栈执行器（PEA）由于其快速响应而已广泛用于高精度定位系统。然而，在不同的激励电压和具有动态频率的外部负载下，PEA磁滞曲线的宽度和倾斜度得到了相应的验证，并表现出不对称现象。本文的主要贡献是提出了一种两输入不对称动态交叉耦合磁滞（TADCH）模型，以描述PEA在动态激励和负载工程应用中的复杂非线性磁滞。此外，我们还开发了相应的TADCH模型识别方法。最后，进行了几次实验以验证所提出模型的准确性。