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A Study on the Mode Conversion Type-Single Resonance Mode Ultrasonic Motor Using Bolt Tightened Langevin Type Vibrator  

이재형 (창원대 공대 전기공학과)
박태곤 (창원대 공대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers C / v.53, no.3, 2004 , pp. 123-127 More about this Journal
Abstract
Mode conversion type ultrasonic rotary motor using bolt tightened Langevin type vibrator was studied. Driving frequency of the motor, displacements and elliptical trajectories at tip of the coupler were simulated by finite element analysis program (ANSYS). Speed and torque of the fabricated motor were measured as functions of input voltage and load. As results, from FEA the driving frequency of 40.8[kHz] and useful elliptical trajectories were found. Fabricated motor rotated clockwise at frequency of 38.2[kHz]. Speed and torque of the motor were increased when the input voltage was increased. Maximum speed, torque and efficiency were 75[rpm], 0.14[Nm] and 6.28[％], respectively.
Keywords
Utrasonic motor; Langevin type vibrator; Elliptical trajectories; Finite element analysis;
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