Improved Bouc-Wen model of piezoelectric actuator and its positioning compensation control study

被引：0
|
作者：
Zhou M. [1 ]
Zhou Z. [1 ,2 ]
Liu X. [1 ,2 ]
Cao T. [1 ,2 ]
Li Z. [1 ,2 ]
机构：
[1] College of Automotive and Mechanical Engineering, Changsha University of Science and Technology, Changsha
[2] Key Laboratory of High Performance Intelligent Manufacturing of Machinery and Equipment in Hunan Province, Changsha University of Science and Technology, Changsha
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2023年 / 42卷 / 10期
关键词：
dynamic asymmetric hysteresis; hysteresis compensation control; improved Bouc-Wen (1BW) model; piezoelectric actuator(PEA);
D O I：
10.13465/j.cnki.jvs.2023.10.019
中图分类号：
学科分类号：
摘要：
To address the asymmetric and frequency-dependent hysteresis nonlinearity of piezoelectric actuator (PEA) that can not be described by most hysteresis models, an improved Bouc - Wen (IBW) model was proposed and its compensation control was experimentally investigated based on the proposed IBW model. Firstly, based on the classical Bouc - Wen ( CBW) hysteresis model, two asymmetric terms and a second-order IIR filter were introduced to accurately describe the hysteresis nonlinearity of the PEA,and the model parameters were further analyzed for the frequency variation law and the parameters were corrected to frequency-dependent. Then,based on NI CompactRIO measurement and control system, piezoelectric actuator precision positioning experimental platform was set up,and the proposed IBW model was experimentally verified and its compensation control was further experimentally studied based on the IBW model. The results show that the IBW model performs significantly better than the CBW and the enhanced Bouc - Wen (EBW) model. Compared with the CBW and EBW model, the root mean square error of the IBW model decreases by 82. 07% and 62. 10% for multi-frequency sinusoidal signals with excitation frequencies of 10 - 100 Hz, respectively. The maximum output displacement measured in the experiment is 6. 15 (Jim,and the root mean square error of the proposed composite compensation control based on the IBW model is 0. 039 (xm, which is only 0. 64% of the maximum output displacement. The maximum tracking error is only 0. 153 |xm, and the positioning error is close to zero if the measurement noise is ignored. It is shown that the proposed IBW model and its compensation control algorithm can help to realize high- speed ' wide-frequency ultra-precision positioning and active vibration control of PEA. © 2023 Chinese Vibration Engineering Society. All rights reserved.
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页码：155 / 164
页数：9
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