Journal
MECHATRONICS
Volume 12, Issue 5, Pages 669-684Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0957-4158(01)00020-4
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The hysteresis characteristic is one of the major setbacks in precise tracking position control of piezoelectric actuators, In this paper. a position control method for a piezoelectric actuator is presented. The controller is based on PID control method augmented with feedback linearization loop. The feedback linearization loop uses a plant model drawn from the Maxwell slip model. The control strategy is then further extended to include a repetitive control algorithm for tracking periodic inputs, Experiments were performed on a 2-axis linear positioner driven by piezoelectric actuators. The experimental results show that the tracking performance is noticeably improved by augmenting a PID controller with both feedback linearization loop and a repetitive controller. (C) 2002 Elsevier Science Ltd. All rights reserved.
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