基于分时驱动方法压电堆响应速度的研究  

Research on the Response Speed of the Piezoelectric Stack Based on the Time-Sequence Driving Method

作　　者：巴学杰[1] 潘巧生[1] 琚斌[1] 冯志华[1] 

机构地区：[1]中国科学技术大学工程科学学院,安徽合肥230027

出　　处：《压电与声光》2016年第6期888-891,896,共5页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(51305439)

摘　　要：为提高压电驱动器响应速度,提出了一种超快速分时驱动方法。它通过考虑压电堆内部应力波传播对响应速度的影响,对各压电层进行分时驱动以提高其整体响应速度。通过COMSOL Multiphysics有限元仿真软件对所提出的模型进行了仿真分析,并通过实验结果得到了验证。相比于传统的同时驱动,分时驱动下压电驱动器的整体响应速度提高为原来的1.92倍;另外,分时驱动可以实现对各压电层产生应力的线性叠加,在不改变驱动器响应速度的前提下获得更大的输出位移。In order to further improve the response speed of the piezoelectric stack, an ultra-fast time sequence driving method is proposed in this paper. The stress wave propagating in the PZT ceramic is considered in this method and all the piezoelectric layers are driven with different pulse voltages to improve the response speed. This method has been simulated by the COMSOL Multiphysics and verified by the experimental result. Compared with the conventional driving method, the time sequence driving method can improve the response speed to be 1. 92 times. Besides, the time sequence driving method can achieve a linear superposition of stress generated by each piezoelectric layer, and larger displacement of the actuator can be achieved, whereas the response time remains unchanged.

关 键 词：压电陶瓷 应力波传播 COMSOL MULTIPHYSICS 分时驱动 响应速度 

分 类 号：TN384[电子电信—物理电子学]