本文从理论和结构上探讨了一种环形板超声弯曲行波旋转马达的行波激发条件和驱动方法.从实验上研究了这种环形板定子的各种振动模式及对马达驱动的效果.实验表明,这种马达具有一定的旋转速度和驱动力矩,并可实现正反方向旋转.实验中发现了单电压驱动现象,可以相信,随着研究的深入,对该现象机理的揭示必将对声马达的研究有重要意义. This paper discusses theoretically and structurally a traveling wave excitation condition and a driving method of a toroidal plate ultrasonic bending traveling wave motor.The various vibration modes and the effect on motor driving of the toroidal plate stator are experimentally studied. It shows that this kind of motor has a certain rotation speed and driving torque, and can be rotated in both positive and negative directions.It was found that the single-voltage driving phenomenon was observed in the experiment.It is believed that as the research progresses, the revelation of this phenomenon will surely affect the sound Motor research is of great significance.