【摘要】 文章主要对压电驱动器的Maxwell滑动模型进行改进,并利用改进后的Maxwell滑动模型对压电陶瓷驱动器固有的非对称型迟滞现象进行研究。利用传统Maxwell滑动模型在不同方向的速度差异,通过一个可修改的速度阈值参数,建立不同的弹簧滑块结构来描述对应的曲线,将传统的并联结构简化为串联结构,避免了在求解过程中的参数耦合问题,并且让模型有了可以描述非对称迟滞曲线的能力,同时使用该串联结构将模型参数的求解过程变为一个参数的最优化问题,简化了系统的求解过程。实验结果表明,改进型Maxwell滑动模型的输出曲线可以有效模拟压电陶瓷驱动器的响应曲线。更多还原

【Abstract】 This paper presents an Improved Maxwell Slip Model( IMSM),and study the asymmetry hysteresis phenomenon of piezoelectric actuators using the IMSM. Some different spring-block structure were used to describe the corresponding curve based on the direction of speed. And a revisable threshold was introduced to IMSM to adapt the variable speed of spring-block structures. In this model,the traditional parallel structure was simplified to series structure and the parameter coupling was avoided in the solving process. Thus,the IMSM has the ability to describe asymmetrical hysteresis phenomenon. The parameters solve process were simplified to an optimization problem in the resolution process. Experiment results show that this technique has been successfully applied to model the hysteresis behavior of a piezoelectric actuator.更多还原