Abstract
In order to measure the load characteristics of a bar type ultrasonic motor quickly and accurately, a test system of mechanical properties of ultrasonic motor was developed based on the measurement principle of load characteristics estimated indirectly according to transient response. The system can be used to measure the transient response of ultrasonic motor in starting 10ms accurately and eatimate the load characteristics indirectly. The load characteristics of a O30mm bar type ultrasonic motor developed in this paper were measured by using the hanging weight method and the transient response method respectively. Experimental results show that the measurement results of the load characteristics, loading speeds and stall torques obtained from the two methods are basically consistent with each other. The results also show that the transient response method can be used to measure the load characteristics of the ultrasonic motor.
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