行波超声波电机瞬态特性的测试及分析

瞬态响应特性是超声波电机的一项重要性能指标。通过主要由光电编码器和数字示波器组成的测试系统,对直径60mm行波超声波电机的瞬态响应特性进行测试,测得超声波电机启动和断电自锁时定子振动和转速变化的过程。利用测试数据和建立定、转子接触面上力的传递、转子内力的传递、定、转子振动耦合特性等力学模型,对行波超声波电机的瞬态特性进行理论分析。这些分析为超声波电机的深入研究提供了理论依据。

Measurement and Analysis on Transient Response of Traveling-wave Ultrasonic Motors

The characteristic of transient response is an important parameter for ultrasonic motors.The transient response measuring system is mostly composed of a photoelectric encoder and a digit oscillograph.When 60mm-diameter traveling-wave ultrasonic motors are startup and stopping,the measuring system can record the transition process of stator vibrancy and rotor speed.The mechanics models of force transfer on interface between stator and rotor, force transfer internal rotor,coupling vibrancy characteristic between stator and rotor are established.The characteristic analyses to transient response use the measuring data and these models.These analyses provide theory reference to in-depth studying ultrasonic motors.