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

来源：Journal of Central South University, 2013, 20(1): 71-75.

DOI：10.1007/s11771-013-1461-7

• octagon-type
• 90 degrees phase difference
• ultrasonic motor
• ATILA

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 90A degrees phase difference voltages were applied to the ceramics on vertical surfaces. When the AC voltage with 90A degrees 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.

• 出版日期2013-1