Design and simulation of the piezoelectric actuator using Taguchi method

The general operation of a piezoelectric ultrasonic resonant actuator is to convert the cyclic motion of the piezoelectric plate to a linear motion at the rotor or slider. The conventional piezoelectric ultrasonic actuator has only one stator tip to impart both the contact (normal) and driving (tangential) force on the rotor or slider. Since the rotor/slider is driven through friction, the only one stator tip design will result in the lower output torques. In the theory, a piezoelectric ultrasonic actuator with more stator tips will have larger output torques. However, it is difficult to design a piezoelectric actuator with multiple stator tips which have synchronous cyclic motion. In this paper, the design and simulation of the novel piezoelectric actuator with multiple stator tips were presented. The accomplishment of this study is increase the vibration amplitude of the driving tips on the piezoelectric ultrasonic actuator. The Taguchi method was used to find the optimal design factors of the piezoelectric plate.