超声波电机孤极反馈电压特性研究

Study on Feedback Voltage Characteristics of Isolated Pole of Ultrasonic Motor

超声波电机的性能完全依赖于其驱动控制系统。为了利用超声波电机的孤极特性,驱动系统需要对孤极进行反馈控制。针对超声波电机的孤极反馈,本文首先简要分析超声波电机的孤极电压特性,包括孤极电压的计算以及影响孤极电压的变量,并对现有超声波电机的孤极电压进行测试,然后对孤极电压反馈信号进行处理,并设计反馈控制,最后对增加反馈信号前后孤极电压的测试结果进行分析比较。实验表明,使用孤极反馈电压控制的超声波电机调速后,可以有效降低孤极电压的波动性。

The performance of ultrasonic motor completely depends on its driving control system.In order to take advantage of the isolated pole characteristics of ultrasonic motor,the driving system needs to control the feedback signal of isolated pole.Aiming at the isolated pole feedback of ultrasonic motor,the characteristics of the isolated pole voltage of ultrasonic motor was first briefly analyzed in this paper,including the calculation of the isolated pole voltage and the variables that affect the isolated pole voltage,and the existing isolated pole voltage of ultrasonic motor was tested to verify the correctness of the theoretical calculation,and then the feedback signal of the isolated pole voltage was to be dealt,and the feedback control was to be designed.Finally,the test results of the isolated pole voltage before and after adding the feedback signal were analyzed and compared.The experimental results show that the fluctuation of isolated pole voltage can be reduced effectively by using the isolated pole feedback voltage of ultrasonic motor.