预应力对超声电机定子振动影响分析  

Affect of Pre-pressure on Ultrasonic Motor Stator Vibration

作　　者：张炜[1] 李胤 杨正伟[1] 王渭平 田干[1] 

机构地区：[1]第二炮兵工程大学602室,西安710025 [2]7102厂军事代表室,成都610100

出　　处：《微电机》2014年第9期18-21,31,共5页Micromotors

摘　　要：为揭示预应力对超声电机定子振动特性的影响,准确分析电机的输出性能,对行波旋转型超声电机定子结构在有、无预应力两种状态下进行了模态分析,研究了预应力对超声电机定子振动固有频率和振幅的影响,提出了模态"纯"度的判别标准,分析了预应力对模态混叠的影响。结果表明:预应力增加了超声电机定子振动的固有频率,增大了定子振动的振幅,能够有效抑制电机模态混叠现象。For disclosing the effects of pre-pressure on stator vibration to analyse ultrasonic motor output per-fotmance more accurately , this paper , aiming to a given ring-type traveling wave ultrasonic motor , studied ultrasonic motor stator mode analyse in double-state with pre-pressure and non-pre-pressure , mainly analysed the affects of pre-pressure on inherent frequency , amplitude of ultrasonic motor stator vibration , and presen-ted mode hallmark differentiate principle to study the affects of prepressure on mode mixing.Results shows that pre-pressure can increase ultrasonic motor stator inherent frequency , amplitude and avoid mode mixing availably.

关 键 词：预应力 固有频率 振幅 模态混叠 

分 类 号：TM359.9[电气工程—电机]