Author： Yoshida Tomohiro
Publisher： Taylor & Francis Ltd
ISSN： 1532-5016
Source： Electric Power Components and Systems, Vol.35, Iss.7, 2007-07, pp. : 741-755
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Abstract
The ultrasonic motor has nonlinearity characteristics, which varies with driving conditions associated with the variations of temperature and applied load torque of ultrasonic motor. The nonlinearity characteristics for actuators are problems in accurate position control. To improve the control performance of the ultrasonic motor, we apply two-control inputs H∞ controller for position control of the ultrasonic motor. Applying an H∞ methodology we derive a stabilizing controller to meet design objectives and robust stability and performance against such variations. The validity of the proposed method is confirmed by experimental results.
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