关键词: 多自由度超声电动机, 弹头偏转, 控制方法, 驱动电路

Abstract:

For the intelligent and miniaturization requirements of deflectable nose mechanism,a multi-degree-of-freedom ultrasonic motor was proposed as a drive device for deflectable nose mechanism based on the eximious characteristics of the ultrasonic motor such as big output torque,fast response,and it was not affected by electromagnetic interference,etc. According to the driving principle of multi-degree-of-freedom ultrasonic motor, a simple method for controlling the deflection of warhead and the corresponding control signals requirements was put forward. In accordance with the requirements and characteristics of the drive signal, a multi-degree-of-freedom ultrasonic motor drive circuit solution for trajectory correction was designed. Through experimental verification, the drive circuit can provide larger output voltage, achieve good processing amplitude, frequency and phase control and meets the design requirements.

Key words: multi-degree-of-freedom ultrasonic motor, deflectable nose, control method, driving circuit