机电集成压电谐波电机传动系统非线性自由振动分析

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (6) : 7-12.

论文

李冲，许立忠，高立超

作者信息 +

Nonlinear free vibration of drive system for an electromechanical integrated harmonic piezoelectric motor

LI Chong，XU Li-zhong，GAO Li-chao

Author information +

文章历史 +

摘要

设计集压电驱动、谐波传动及活齿传动为一体的机电集成压电谐波电机，并分析其工作机理。借鉴行星齿轮传动理论，建立传动系统动力学模型。利用Linz Ted-Poincaré法推导传动系统非线性频率特性方程及位移响应方程，分析传动系统的非线性频率变化规律及时域响应特点；通过ANSYS有限元软件对频率进行验证。结果表明，传动系统非线性由啮合齿数变化引起，啮合齿数越少系统非线性越显著；系统位移响应受非线性影响最明显、微弱的分别为波发生器x及u向；利用有限元仿真验证动力学模型的正确性。

Abstract

An electromechanical integrated harmonic piezoelectric motor which integrates piezoelectric driving, harmonic drive and movable tooth drive is designed and the principle of the motor is discussed. Using the theory of planetary gear transmission for reference, the dynamic models of drive system are set up. Utilizing Linz Ted-Poincaré method, the equations of frequency characteristic and displacement response are deduced. Then, the law of frequency variation and the characteristic of time response are analyzed. Finally, the ANSYS finite element software is applied to verify the frequencies. Results show, the nonlinear of the drive system is caused by the changing of meshing teeth number, and the fewer the meshing teeth number, the more obvious the nonlinear phenomenon of the drive system. In the displacement response, the x and u direction of harmonic generator are the most and the least affected by nonlinear phenomenon. Finite element simulation verifies the correctness of the dynamic model.

导出引用

李冲，许立忠，高立超. 机电集成压电谐波电机传动系统非线性自由振动分析[J]. 振动与冲击, 2016, 35(6): 7-12

LI Chong，XU Li-zhong，GAO Li-chao. Nonlinear free vibration of drive system for an electromechanical integrated harmonic piezoelectric motor[J]. Journal of Vibration and Shock, 2016, 35(6): 7-12

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