Title :
Modeling and H∞ composite control of the coupled hysteretic dynamics in piezoelectric micro-displacement systems
Author :
Liang Tang ; Lei Liu ; Xin Guan
Author_Institution :
Nat. Lab. of Space Intell. Control, Beijing Inst. of Control Eng., Beijing, China
Abstract :
This paper investigates the modeling and H∞ composite control of the coupled hysteretic dynamics in a piezoelectric micro-displacement system (PMS). First, the coupled multi-field hysteretic dynamics with physical meanings is presented for PMS. Next, the composite control analysis of the hysteretic dynamics is proposed. Then, a H∞ synthesis controller is designed by using the simplified hysteretic dynamics. To enhance the H∞ performance, the inversion-based feedforward compensation is augmented. The proposed H∞ feedback control and the inversion-based feedforward can be designed separately. Finally, the experimental studies are provided to demonstrate the proposed H∞ composite control approach.
Keywords :
H∞ control; compensation; control system synthesis; feedback; feedforward; hysteresis; piezoelectric actuators; H∞ composite control; H∞ feedback control; H∞ performance; H∞ synthesis controller design; PMS; composite control analysis; coupled hysteretic dynamics; coupled multifield hysteretic dynamics; inversion-based feedforward compensation; piezoelectric micro-displacement system; piezoelectric microdisplacement system; Creep; Dynamics; Feedforward neural networks; Hysteresis; Mathematical model; Vibrations; Broadband Control; Hysteretic Dynamics; Jitter Control; Piezoelectric Actuator;
Conference_Titel :
Informatics in Control, Automation and Robotics (ICINCO), 2014 11th International Conference on
