Title :
Robust μ control system for the optical ultra-precision vibration isolation system
Author :
Lu, Zhenyu ; Zhu, Rihong
Author_Institution :
Nanjing Univ. of Sci. & Technol., Nanjing
Abstract :
The μ synthesis robust control theory is based on the structural singular value, which is used in the control system of the active vibration isolation. It is used to solve the uncertainty of the optical ultra-precision instrument vibration isolation system. And the wavelet theory is used to analyze the random vibration signal in the time-frequency domain and get the low frequency signal from the random vibration signal. Then the robust μ controller designed by the μ synthesis robust control theory is used to restrain the low frequency vibration. The simulation results prove that this method has shown good robustness and control precision in the vibration isolation of the optical ultra-precision instrument
Keywords :
control system synthesis; optical variables control; robust control; time-frequency analysis; vibration isolation; wavelet transforms; optical ultraprecision vibration isolation system; random vibration signal; robust mu control system; structural singular value; time-frequency domain; wavelet theory; Control system synthesis; Control systems; Instruments; Optical control; Robust control; Signal synthesis; Uncertainty; Vibration control; Wavelet analysis; Wavelet domain; The μ synthesis Robust control theory; The Wavelet analysis; The control of active vibration isolation; The optical ultra - precision instrument;
Conference_Titel :
Automation and Logistics, 2007 IEEE International Conference on
Conference_Location :
Jinan
Print_ISBN :
978-1-4244-1531-1
DOI :
10.1109/ICAL.2007.4338708
