期刊
AEROSPACE SCIENCE AND TECHNOLOGY
卷 47, 期 -, 页码 238-246出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ast.2015.09.026
关键词
Piezoelectric actuator; H-infinity robust control; Preisach hysteresis model; Fuzzy least square support vector machine
资金
- Weapons and Equipment Pre-research Fund [9140A2011QT4801]
- National Studying Abroad Foundation Project [201208430262]
- China Scholarship Council
In order to improve the performance of the piezoelectric actuator and considering the uncertain factors in the working process of the piezoelectric actuator, a novel H-infinity robust controller is developed. Firstly, the hysteresis characteristic of the piezoelectric actuator is studied and the fuzzy least square support vector machine is adopted to solve the hysteresis problem, then the model is established; secondly, the method of H-infinity robust theory is introduced to control the piezoelectric actuator and in the process of the design, the chaos optimization algorithm is applied to optimize the weight function of the H-infinity, robust controller, then the final controller is established; at last, the simulation model of the optimized H-infinity, robust control system and the not optimized system are built, also the intelligent PID control system is built to compare the control effect. Results show that the optimized H-infinity, robust control system is robust with high stability, which can eliminate the disturbance from the outside and has been proved to be an excellent controller. (C) 2015 Elsevier Masson SAS. All rights reserved.
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