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Study on Ultrasonic Motor Drives

Author: WangHuaYun
Tutor: GuChengLin
School: Huazhong University of Science and Technology
Course: Motor and electrical
Keywords: Ultrasonic Motor Speed ??Control Position Control
CLC: TM359.9
Type: Master's thesis
Year: 2005
Downloads: 506
Quote: 4
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Abstract


USM (Ultrasonic Motor, USM) is using the new principle, the use of special materials new motor . It uses the inverse piezoelectric effect of piezoelectric ceramic ultrasonic vibration generated , and then through the friction between the stator and rotor to drive the rotor . Compared with conventional electromagnetic motors , ultrasonic motors have a compact, self-locking power , low speed high torque , fast response , high control precision , low noise , no electromagnetic interference and other advantages . Therefore, in the aerospace, precision instruments, medical equipment, intelligent robotics and other fields has broad application prospects. In recent years , the ultrasonic motor much attention to the scientific community and industry , mechanical and electrical control for the current field of a research hotspot . This paper developed by experiment platform to build an ultrasonic motor speed control system and precise position control system for further study experimental means . Main text as follows : The system introduces ultrasonic motor characteristics, the study of history and main applications , an overview of the ultrasonic motor drive control technology of the status quo. In introducing the inverse piezoelectric effect of piezoelectric ceramics and piezoelectric oscillator based on the resonance characteristics to explain the mechanism of ultrasonic motor operation and speed control principle . Describes the annular traveling wave type ultrasonic motor of the basic structure and working principle . Developed DSP-based ultrasonic motor drive control system for ultrasonic motor control technology research provides a common experimental platform . By photoelectric encoder to detect the speed of the ultrasonic motor is developed to make use of frequency adjustment speed feedback frequency tracking controller to achieve a P-controller with a frequency stability of the ultrasonic motor speed control . To achieve a large diameter (80mm) ring traveling wave type ultrasonic motor precision position detection . Developed DSP-based ultrasonic motor position control system , the completion of the phase difference P control scheme used for precision positioning control rats.

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CLC: > Industrial Technology > Electrotechnical > Motor > A special motor > Other
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