一种简单宽频带移相超声波电动机驱动系统

A Simple Wide Bandwidth Phase-Shifting Driving System of Ultrasonic Motor

传统的超声波电动机由于升压变压器的存在,驱动系统通用性差。介绍一种简单、宽频带、高性能超声驱动系统,该系统使用数字锁相技术实现移相,通过高性能运放将信号放大到峰峰值150 V,能够很好地驱动超声波电动机。

The traditional driving system of ultrasonic motor （USM） was poor in adaptability because of transformer. So a simple wide bandwidth driving system of ultrasonic motor was introduced in this paper. The system used digital phase - locked technology to achieve phase - shifting, it amplified the signal to 150 V through high - performance operational ampli- fier,and drived ultrasonic motor effectively.