关键词: 超声波电动机, 接触分析, 滑移距离, 有限元

Abstract:

The radial sliding loss between the stator and the rotor during the operation of the ultrasonic motor is considerable,and reducing the sliding loss is beneficial to improve the output efficiency of the ultrasonic motor.According to the overall structural characteristics of the ultrasonic motor,the contact slip of the stator and rotor mainly affects the thickness of the rotor web,the thickness of the stator web,the width and height of the flexible part.Based on the vibration analysis theory, the motor analysis model was established.Under the same boundary condition,the influence of each influence parameter on the slip distance of the stator and rotor of the motor was simulated by ANSYS.Under the condition of applying the same pre-pressure,the thickness of the rotor web and the height of the flexible link have little influence on the slip distance,while the thickness of stator web and the width of flexible link have more influence on the slip distance.The conclusion provides a theoretical basis for the design of ultrasonic motor.

Key words: ultrasonic motor, contact analysis, slip distance, finite element