一种改进Preisach模型数值实现方法

An Improved Numerical Implementation of Preisach Model

探究描述压电陶瓷迟滞特性的传统Preisach数值实现方法的弊端,针对这种数值实现不具有擦除特性,提出一种具有擦除特性的改进Preisach数值实现方法,并描述其详细原理与实现过程,最后进行相关实验研究。实验结果表明,该文提出的具有擦除特性的改进Preisach数值实现方法在复杂加载过程中能相对精确地计算压电陶瓷输出位移,提高了迟滞建模精度,具有更广泛的应用范围。

The disadvantage of the numerical implementation of conventional Preisach model for describing piezoelectric hysteresis is analyzed in the paper. For the deficiency of the wiping-out property in the conventional nu- merical implementation, an improved numerical implementation of Preisach model with wiping-out property is pro- posed and its detailed principal and implementation procedure is presented. The related experiments are carried out and the result demonstrate that, compared with the conventional numerical implementation, the proposed numerical implementation can calculate the output displacement of piezoelectric actuator more accurately in complicated loading procedure and could be extensively applied.