Driving characteristics of octagon-type ultrasonic motor
来源期刊：中南大学学报(英文版)2013年第1期
论文作者：KIM Jong-Wook PARK Choong-Hyo LIM Jung-Hoon JEONG Seong-Su PARK Jong-Kyu PARK Tae-Gone
文章页码：71 - 75
Key words：octagon-type; 90° phase difference; ultrasonic motor; ATILA
Abstract: 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.
KIM Jong-Wook, PARK Choong-Hyo, LIM Jung-Hoon, JEONG Seong-Su, PARK Jong-Kyu, PARK Tae-Gone
(1. Changwon National University, Sarim-dong, Changwon-si, Gyeongsangnam-do, 641-773, Korea)
Abstract: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.
Key words:octagon-type; 90° phase difference; ultrasonic motor; ATILA
