Title :
Adaptive performance improvement in a robust control system
Author :
Maki, Midori ; Hagino, Kojiro
Author_Institution :
Dept. of Syst. Eng., Univ. of Electro-Communications, Tokyo, Japan
Abstract :
We develop an adaptive robust control law for linear systems with norm-bounded parameter uncertainties, which forms linear interpolation of a linear quadratic optimal control for the nominal system and a guaranteed cost control. The interpolation coefficient is tuned, based on the online information about the size of actual parameter uncertainties. The proposed control scheme overcomes the disadvantage of a linear robust control with a fixed gain in the sense that transient performance could be improved
Keywords :
adaptive control; cost optimal control; interpolation; linear quadratic control; linear systems; robust control; uncertain systems; adaptive performance improvement; adaptive robust control law; guaranteed cost control; interpolation coefficient; linear interpolation; linear quadratic optimal control; linear systems; nominal system; norm-bounded parameter uncertainties; online information; parameter uncertainties; robust control system; transient performance; Adaptive control; Control systems; Cost function; Interpolation; Linear systems; Optimal control; Performance gain; Programmable control; Robust control; Uncertain systems;
Conference_Titel :
Decision and Control, 2001. Proceedings of the 40th IEEE Conference on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-7061-9
DOI :
10.1109/.2001.981115
