Title :
Robust synthesis in 1 via μ approach and D-K iteration [Space Shuttle example]
Author :
Tenqchen, Shing ; Sun, Ming-Chang ; Feng, Wu-Shiung
Author_Institution :
Dept. of Electron. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
In this paper, we propose the linear fractional transformation (LFT) method to synthesize controllers that achieve globally robust stability, robust performance, and satisfactory worst-case performance, within any prescribed tolerance, against structured norm-bounded time-varying and/or nonlinear uncertainty, respectively. The uncertainty is characterized by any prescribed tolerance, against structured norm-bounded time-varying and/or nonlinear behaviors. The output feedback synthesis problem when the signal norm is proposed to get the ∞ norm and the perturbations are structured time-varying and/or nonlinear systems with an induced ∞-norm bound. A global optimal solution to the robust synthesis problem is obtained. A synthesizing 1 controller for a simplified space-shuttle model is taken from the μ-analysis and D-K iteration method to compare each other.
Keywords :
control system analysis; control system synthesis; feedback; iterative methods; nonlinear programming; perturbation techniques; robust control; space vehicles; uncertain systems; μ-analysis; D-K iteration; LFT method; controller synthesis; linear fractional transformation; nonlinear uncertainty; output feedback synthesis; perturbations; robust synthesis; signal norm bound; space-shuttle model controller; structured norm-bounded uncertainty; time-varying uncertainty; tolerance; Approximation algorithms; Control system synthesis; Control systems; Nonlinear control systems; Optimal control; Performance analysis; Robust control; Robust stability; Robustness; Uncertainty;
Conference_Titel :
Circuits and Systems, 2002. MWSCAS-2002. The 2002 45th Midwest Symposium on
Print_ISBN :
0-7803-7523-8
DOI :
10.1109/MWSCAS.2002.1186981
