关键词: 超声波电动机, 定子结构, 模态频率, 振幅, 整体性能分析

Abstract:

Stator as an important part of ultrasonic motor, its vibration performance directly affects the output characteristics of the motor drive. The stator structure of a new type of rotating traveling wave ultrasonic motor was studied. The finite element analysis software was used to model and perform dynamic analysis. By changing the important structural dimensions in stator teeth and elastic matrix and extracting the stator vibration mode frequency and particle amplitude ,the influence of different structure dimensions on the vibration mode and amplitude was studied. The overall performance of a stator with a certain size was analyzed to prove the rationality of stator design. This research contributes to reduce the blindness in the process of motor development, shorten the design cycle and improve the economic benefits, and provide the necessary theoretical foundation for the ultimate control of motor characteristics and structural optimization design.

Key words: ultrasonic motor(USM), stator structure, mode frequency, vibration amplitude, overall performance analysis