中文摘要：

介绍了一种用于超声电机的多频、宽带、具有自恢复保护电路的通用驱动电源。该电源采用高频高压功率放大器,可输出两路峰-峰值200V的电压,频率可高达300kHz;采用LabVIEW虚拟仪器技术,输出频率、幅值、相位都可调的正弦波、方波、三角波等波形;与传感器结合,该电源易于构成控制电路。

英文摘要：

The paper proposes a multi-frequencies,wide bandwidth and auto-recover protection power supply used to drive the ultrasonic motors （USM）. The power supply uses the high frequency and high voltage amplifier to output the two-way voltage with 200 V of peak-peak value and its frequency is up to 300 kHz. Using virtual instrument of LabVIEW,it provides sine wave,square wave,triangle wave waveforms which the frequency,amplitude and phase can be adjustable. The power supply is also easy to incorporate with sensors to construct the control circuit of the ultrasonic motor.