中文摘要：

为了分析和抑制超声波电动机在运行过程中产生的尖啸噪声,建立电动机噪声的试验测试系统,利用试验和有限元法分析电动机噪声产生的根源;利用等效原则建立电动机噪声产生机理的振动解释模型,根据该模型分析预压力对电动机噪声的影响,并提出降低电动机噪声的方法和措施。研究结果表明:电动机噪声是由定子、转子之间的摩擦自激振动引起的,且电动机噪声强度随着预压力的增大而减小,当预压力超过其临界值时,电动机噪声能得到很好的抑制。

英文摘要：

In order to analyze and suppress sharp noise of the traveling-wave ultrasonic motor (TWUSM) during its operation, the test measuring system of motor noise is established, and the source of noise is analyzed through test by using finite element method (FEM). The vibration interpretation model of the generation mechanism of motor noise is established by using the equivalent principle. On the basis of the model, the influence of pre-pressure on the motor noise is analyzed, and methods and measures for reducing...