摘要
提出一种利用具有等同振动特性的１／２波长马达定子来建立圆板型行波超声马达电学模型的方法，该方法结合马达定子复合板振动模式的特点，直接利用哈密顿原理对行波型马达定子的等效电路进行精确求解。模型反映了行波马达形成机理，同时计入了马达高阶非轴对称振动模式、齿的结构尺寸、压电陶瓷各向异性等要素。利用该方法可求解行波型马达在各阶常用振动模式下的静态电容、动态电容、动态电感、动态电阻、等效输入阻抗等电学参数，与实验测试达到了很好的一致性。
This paper puts forward a method of establishing equivalent circuit model of traveling wave ultrasonic motor by using 1/2 wavelength stator with the same vibration characteristics. Combined with the vibration mode characteristics of composite plate of stator, the method utilizes Hamilton principle to obtain precise solution of the simplified equivalent circuit. The model shows mechanism of ultrasonic motor and reflects an influence of non-axisymmetric vibration mode, tooth outline, anisotropy of PZT, etc. Using the method, various electric parameters corresponding to different vibration modes, such as static capacitance, dynamic capacitance, dynamic inductance, dynamic resistance, equivalent input impedance, etc., can be solved. Experiments show good agreement with theoretical results.
出处
《声学学报》
EI
CSCD
北大核心
2002年第2期167-175,共9页
Acta Acustica
