Control strategy of a piezoelectric stage based on the parameter-dependent Bouc-Wen model under condition variations

被引:3
作者
Cai, Jingnan [1 ]
Dong, Wei [1 ]
Gao, Yongzhuo [1 ]
Nagamune, Ryozo [2 ]
机构
[1] Harbin Inst Technol, State Key Lab Robot & Syst, Harbin 150080, Heilongjiang, Peoples R China
[2] Univ British Columbia, Dept Mech Engn, Vancouver, BC V6T 1Z4, Canada
来源
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY | 2024年 / 86卷
关键词
Piezoelectric actuator; Hysteresis; Bouc-Wen model; Parameter variation; Feedforward-feedback control; High -precision positioning; HYSTERESIS; COMPENSATION; DESIGN; IDENTIFICATION; ACTUATORS;
D O I
10.1016/j.precisioneng.2023.11.012
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This paper proposed a feedforward-feedback (FF-FB) control strategy for a linear piezoelectric walking stage (LPWS) based on the parameter-dependent Bouc-Wen (PD-BW) model under condition variations. The mathematical model of LPWS is established by linearization, which consists of a linear system and a hysteresis nonlinearity system. The linear dynamics model of LPWS is identified by the swept-sine method, whereas the hysteresis nonlinearity model of LPWS is identified based on the PD-BW model. The feedforward controller based on the inverse PD-BW model can compensate for the inherent hysteresis nonlinearity of LPWS at varying excitation frequency, surrounding temperature, and external load. A proportional plus lead-lag feedback controller is built to reduce feedforward modelling error and improve the output accuracy of LPWS. The sensitivity analysis of the LPWS feedback control system is performed to reduce the effect of disturbance and noise. Experimental results present the feasibility and effectiveness of the proposed FF-FB control strategy to achieve an efficient and accurate positioning performance.
引用
收藏
页码:140 / 152
页数:13
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