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6 February 2022 Creep modeling and control methods of piezoelectric actuators based on fractional order theory
Ranxiang Ge, Xudong Wang, Jun Long, Zhichao Chen, Xinyang Zhang
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Proceedings Volume 12081, Sixth International Conference on Electromechanical Control Technology and Transportation (ICECTT 2021); 120810B (2022) https://doi.org/10.1117/12.2624020
Event: Sixth International Conference on Electromechanical Control Technology and Transportation (ICECTT 2021), 2021, Chongqing, China
Abstract
This paper is focused on the modeling, parameter identification and control strategies of creep phenomenon of piezoelectric actuators. Specifically, a fractional order model is established to characterize the creep behavior. Compared with the traditional creep modeling method like logarithmic model, the fractional order model has faster convergence speed and less steady-state error. Afterwards, a fractional order PI controller is designed for closed-loop control. The simulation results verify the effectiveness of the controller. All above results indicate that fractional order theory can improve the accuracy of creep tracking and prediction of piezoelectric actuators.
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Ranxiang Ge, Xudong Wang, Jun Long, Zhichao Chen, and Xinyang Zhang "Creep modeling and control methods of piezoelectric actuators based on fractional order theory", Proc. SPIE 12081, Sixth International Conference on Electromechanical Control Technology and Transportation (ICECTT 2021), 120810B (6 February 2022); https://doi.org/10.1117/12.2624020
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KEYWORDS
Control systems
Actuators
Calculus
Data modeling
Sensors
Device simulation
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