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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >A piezoelectric motor using flexural vibration of a thinpiezoelectric membrane
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A piezoelectric motor using flexural vibration of a thinpiezoelectric membrane

机译：利用压电薄膜的弯曲振动的压电马达

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This paper describes a new implementation of a disk-typenpiezoelectric motor, whose stator is a commercial availablenpiezomembrane composed of a nickel alloy disk to which a piezoceramicndisk is bonded. The two disks are concentric, and the total thickness isnvery small. Ultrasonic motors are based on the concept of driving anrotor by mechanical vibration excited on a stator, via the piezoelectricneffect. The rotor is in contact with the stator, and the driving forcenis the frictional force between rotor and stator. To transform thenmechanical vibration of the stator in the rotor rotation, a travelingnwave must be excited on the stator surface. The proposed motor can benregarded as a disk-type, single wavelength motor in which the travelingnwave is due to the natural flexural vibration of the piezomembrane atnlow frequency. The behavior of the stator is analyzed bothntheoretically, by using the theory of isotropic and homogeneousnvibrating plates, and by means of a commercial finite element computerncode, finding a good agreement with the experimental results. The mainnfeatures of the motor are very small thickness, appreciable torque, andnhigh speed, obtained with low input power at low voltage; the intendednapplication is to substitute the moving-coil in analogic instrumentation
机译：本文介绍了一种磁盘型压电电动机的新实现方式，该电动机的定子是市售的压电膜，该膜由结合了压电陶瓷磁盘的镍合金磁盘组成。两个盘是同心的，总厚度很小。超声波电动机基于通过压电效应在定子上激发的机械振动来驱动转子的概念。转子与定子接触，驱动力使转子与定子之间产生摩擦力。为了改变定子在转子旋转中的机械振动，必须在定子表面上激发行波。所提出的电动机可以被认为是盘式单波长电动机，其中行波是由于压电膜在低频下的自然挠曲振动引起的。利用各向同性和均质振动板的理论，从理论上对定子的性能进行了分析，并借助商业有限元计算机代码，与实验结果取得了很好的一致性。电动机的主要特点是厚度小，转矩可观，转速高，在低电压下输入功率低。预期的应用是在模拟仪器中替代动圈

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