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research-article

Feedforward-Feedback Linearization LQG/LTR Control of Piezoelectric Actuator in Active Vibration Isolation System

[+] Author and Article Information
Shuai Wang

Harbin Institute of Technology, School of Mechatronics Engineering, Harbin, China; 92 West Dazhi Street, Nangang District, Harbin, China
24778885@qq.com

Zhao-Bo Chen

Harbin Institute of Technology, School of Mechatronics Engineering, Harbin, China; 92 West Dazhi Street, Nangang District, Harbin, China
chenzb@hit.edu.cn

Xiaoxiang Liu

Beijing Institute of Control Engineering, No. 16, South 3rd street, Zhongguancun, Haidian District, Beijing, China
monkeyfiona@163.com

Yinghou Jiao

Harbin Institute of Technology, School of Mechatronics Engineering, Harbin, China; 92 West Dazhi Street, Nangang District, Harbin, China
jiaoyh@hit.edu.cn

1Corresponding author.

ASME doi:10.1115/1.4039245 History: Received November 16, 2017; Revised January 28, 2018

Abstract

Hysteresis exists widely in intelligent materials, such as piezoelectric and giant magnetostrictive ones, and it significantly affects the precision of vibration control when a controlled object moves at a range of micrometers or even smaller. Many measures must be implemented to eliminate the influence of hysteresis. In this work, the hysteresis characteristic of a proposed piezoelectric actuator is tested and modeled based on the adaptive neuro fuzzy inference system. A linearization control method with feedforward hysteresis compensation and PID feedback is established and simulated. A linear quadratic Gaussian with loop transfer recovery (LQG/LTR) regulator is then designed as a vibration controller. Verification experiments are conducted to evaluate the effectiveness of the control method in vibration isolation. Experiment results demonstrate that the proposed vibration control system with a feedforward feedback linearization controller and an LQG/LTR regulator can significantly improve the performance of a vibration isolation system in the frequency range of 5 Hz to 200 Hz with low energy consumption.

Copyright (c) 2018 by ASME
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