The general operation of a piezoelectric ultrasonic 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 to find the optimal dimensions of the piezoelectric plate which has the smaller motion difference between two different stator tips on the piezoelectric ultrasonic actuator. From the simulation experiment results, the optimal dimensions of the piezoelectric plate are 16×4×2 mm and the motion difference between two different stator tips was reduced from 19 μm to 0.03 μm in the X-direction and from 9 μm to 0.18 μm in the Y -direction.
All Science Journal Classification (ASJC) codes
- Computer Science(all)
- Health(social science)
- Environmental Science(all)