A ring type standing wave ultrasonic motor using cantilever type longitudinal transducers |
| |
Authors: | LIU Ying-xiang LIU Jun-kao CHEN Wei-shan SHI Sheng-jun |
| |
Affiliation: | State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China |
| |
Abstract: | The disadvantages of classic ring type ultrasonic motor were analyzed.To obtain large mechanical output power, a ring type standing wave ultrasonic motor using cantilever type longitudinal transducers was proposed.There are four pairs of cantilevers on one side of the ring, and four PZT ceramics are set between each pair of cantilevers.A screw fastened the PZT ceramics and cantilevers together to form a longitudinal transducer.The bending vibration mode of the ring i's excited by the stretching vibration of the PZT ceramics.Thus, linear simple harmonic motions are achieved at the particle on the teeth.And the driving force is the frictional force between rotor and stator.The working principle of the proposed motor was analyzed.The ring and the longitudinal transducer were designed with FEM.The sensitive parameters of resonant frequency of the transducer and ring could be gained with modal analysis.The longitudinal vibration modal of transducer and bending vibration modal of ring were degenerated, and the motion trajectories of nodes on the teeth Were analyzed.The resuits of this paper could guide the development of this new type of motor. |
| |
Keywords: | ultrasonic motor standing wave ring type vibration characteristic FEM |
本文献已被 CNKI 维普 万方数据 等数据库收录! |
| 点击此处可从《哈尔滨工业大学学报(英文版)》浏览原始摘要信息 |
|
点击此处可从《哈尔滨工业大学学报(英文版)》下载全文 |