Design, analysis and experiments of a linear piezoelectric actuator adopting a flexible mechanism with wing skeletal structure

摘要

This paper proposes a linear piezoelectric actuator with a flexible mechanism with wing skeletal structure. Besides the compact structure, high location precision and easy control, the main innovation point is that through the flexible mechanism with wing skeletal structure, the proposed actuator solves the problem that existing piezoelectric actuators based on parasitic motion principle must sacrifice motion performance in one direction for improving that in the opposite direction. The design process and operation principle of the proposed actuator is elaborated. And finite element analysis software ABAQUS and mathematical software MATLAB/SIMULINK are used to carry out static and dynamic analysis of the flexible mechanism. Last, a series of experiments are carried out and the results prove the proposed actuator can achieve desired function and show a favorable prospect to develop further.