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Proceedings Paper

Hysteresis compensation for piezoelectric actuators in single-point diamond turning
Author(s): Haifeng Wang; Dejin Hu; Daping Wan; Hongbin Liu
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Paper Abstract

In recent years, interests have been growing for fast tool servo (FTS) systems to increase the capability of existing single-point diamond turning machines. Although piezoelectric actuator is the most universal base of FTS system due to its high stiffness, accuracy and bandwidth, nonlinearity in piezoceramics limits both the static and dynamic performance of piezoelectric-actuated control systems evidently. To compensate the nonlinear hysteresis behavior of piezoelectric actuators, a hybrid model coupled with Preisach model and feedforward neural network (FNN) has been described. Since the training of FNN does not require a special calibration sequence, it is possible for on-line identification and real-time implementation with general operating data of a specific piezoelectric actuator. To describe the rate dependent behavior of piezoelectric actuators, a hybrid dynamic model was developed to predict the response of piezoelectric actuators in a wider range of input frequency. Experimental results show that a maximal error of less than 3% was accomplished by this dynamic model.

Paper Details

Date Published: 9 June 2006
PDF: 7 pages
Proc. SPIE 6149, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 614934 (9 June 2006); doi: 10.1117/12.674322
Show Author Affiliations
Haifeng Wang, Shanghai Jiao Tong Univ. (China)
Dejin Hu, Shanghai Jiao Tong Univ. (China)
Daping Wan, Shanghai Jiao Tong Univ. (China)
Hongbin Liu, Shanghai Jiao Tong Univ. (China)


Published in SPIE Proceedings Vol. 6149:
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies
Li Yang; Shangming Wen; Yaolong Chen; Ernst-Bernhard Kley, Editor(s)

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