超声波电动机驱动器的输入电压通常为12 V或24 V,需要一个稳压电源供电,整体体积较大,难以在微型化的应用中发挥作用。如何降低输入电压,减小驱动器的体积成为了关键。介绍一种超声波电动机的低压驱动器,该驱动器的输入电压低至2~5 V,采用两节干电池或者单节锂电池供电,输出电压为24~40 V。另外该驱动器输出信号的频率、幅值、占空比以及脉冲个数可分别调节。
An extern constant voltage power supply is needed since the input voltage of the ultrasonic motor(USM) is usually 12 V or 24 V.Howerer,it makes the system bulky and affects the application of the micro USM.How to reduce the input volgate and volume becomes the key point.Therefore,a micro driver for the USM was designed..