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A traveling-wave ultrasonic motor using a bar transducer

机译：使用条形传感器的行波超声波电动机

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摘要

An in-plane traveling-wave ultrasonic motor was proposed in this paper.The motor is composed of an annular stator with a bar transducer and two cone shaped rotors.The rotors are pressed in contact to the borders of the inner surface of the stator by means of an opportune pre-pressure system.The bar transducer has a sandwich-like configuration.Two set piezoelectric elements are bolded in it.One is used to excite the first longitudinal vibration,and the other is used to excite the second flexural vibration of the bar.The effective excitation of the traveling wave in the stator,with the longitudinal vibration and the bending vibration in the bar transducer,has been simulated with FEM (finite element method).The prototype has been made and investigated experimentally for its performance.Its maximum torque and rotation speed are 0.25Nm and 50r/min,respectively.
机译：本文提出了一种平面行波超声电机，该电机由带有条形传感器的环形定子和两个锥形转子组成，转子通过压紧接触定子内表面的边界棒式换能器具有类似三明治的构造，其中两个设置的压电元件加粗，一个用于激励第一纵向振动，另一个用于激励第二弯曲振动。利用有限元法模拟了定子中行波的有效激励，以及其纵向振动和弯曲振动，并利用有限元法进行了仿真。对原型进行了性能研究。其最大扭矩和转速分别为0.25Nm和50r / min。

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