复合型USM扭振动模态的设计理论  

The Design Theory of the Torsional Vibrations Mode on the Composite Ultrasonic Motor

作　　者：郭海训[1] 冯威[1] 魏燕定[1] 郭吉丰[1] 陈永校[1] 

机构地区：[1]浙江大学电气工程学院,杭州310027

出　　处：《压电与声光》2001年第4期319-322,共4页Piezoelectrics & Acoustooptics

基　　金：国家高技术航天领域资助项目 ( 863-2 -2 -4 -6)

摘　　要：根据所建立的纵扭复合型超声波电机 ( U SM)扭转振动的理论模型推导出了电机扭转振动模式的谐振频率方程 ,利用该式计算可得到定子弹性体部分的尺寸 ,并用有限元法对计算结果进行验证。上述计算结果与以此理论模型设计的实验电机所测得的谐振频率进行比较 ,证明了上述理论的有效性。同时研制得到的电机具有较好的性能 ,其最大输出力矩可达 4 N· m以上。In this paper,firstly the respective frequency equation of the torsional vibrations is derived on the bases of the constructed theory model,and the sizes of the elastic body in the stator can be computed by using the equation.The compute results are tested by finite element method after they are obtained.Finally the validity of the theory model is confirmed through experiments.According to the idea above,an sample motor is produced with the excellent features of positive and negative running.Its maximal output torque has reached 4 N·m.

关 键 词：超声波电机 有限元法 扭振动模态 

分 类 号：TM35[电气工程—电机]