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Sensors 2017, 17(11), 2577; https://doi.org/10.3390/s17112577

Modeling and Positioning of a PZT Precision Drive System

College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin 150040, China
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Author to whom correspondence should be addressed.
Received: 26 August 2017 / Revised: 30 September 2017 / Accepted: 3 October 2017 / Published: 8 November 2017
(This article belongs to the Section Physical Sensors)
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Abstract

The fact that piezoelectric ceramic transducer (PZT) precision drive systems in 3D printing are faced with nonlinear problems with respect to positioning, such as hysteresis and creep, has had an extremely negative impact on the precision of laser focusing systems. To eliminate the impact of PZT nonlinearity during precision drive movement, mathematical modeling and theoretical analyses of each module comprising the system were carried out in this study, a micro-displacement measurement circuit based on Position Sensitive Detector (PSD) is constructed, followed by the establishment of system closed-loop control and creep control models. An XL-80 laser interferometer (Renishaw, Wotton-under-Edge, UK) was used to measure the performance of the precision drive system, showing that system modeling and control algorithms were correct, with the requirements for precision positioning of the drive system satisfied. View Full-Text
Keywords: precision positioning; piezoelectric ceramics; PID control; creep compensation precision positioning; piezoelectric ceramics; PID control; creep compensation
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Liu, C.; Guo, Y. Modeling and Positioning of a PZT Precision Drive System. Sensors 2017, 17, 2577.

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