Driving characteristics of octagon-type ultrasonic motor

作     者：KIM Jong-Wook PARK Choong-Hyo LIM Jung-Hoon JEONG Seong-Su PARK Jong-Kyu PARK Tae-Gone 

作者机构：Changwon National UniversitySarim-dongChangwon-siGyeongsangnam-do641-773Korea 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2013年第20卷第1期

页      面：71-75页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 

基　　金：Project supported by the Second Stage of Brain Korea 21 Projects supported by the National Research Foundation of Korea (NRF) Grant funded by the Korea government (MEST) [No.2011-0030806] 

主　　题：octagon-type 90° phase difference ultrasonic motor ATILA 

摘      要：Structure of the octagon-type ultrasonic motor was proposed and designed so as to allow the motor to drive small actuator. The stator of the motor consisted of the octagon shape elastic body and four rectangular plate ceramics. The four ceramics were attached to outer surfaces of the octagon elastic body. The same phase voltages were applied to the ceramics on horizontal surfaces, and 90° phase difference voltages were applied to the ceramics on vertical surfaces. When the AC voltage with 90° phase difference was applied in ceramics, the elliptical displacement of unimorph bars was generated by generating bending vibration. To find the maximum displacement model that generates elliptical displacement at the centers of the inner surfaces, the finite element analysis program ATILA was used. The analyzed results were compared to the experimental results. As a result, the speed and torque are increased linearly by increasing the input voltage and the speed of motors can be controlled by changing the applied voltages.