Robust vibration control of uncertain systems using variable parameter feedback and model-based fuzzy strategies

In this paper. two control strategies are investigated for robust vibration control of parameter uncertain systems. Firstly, for the variable paramete r feedback control, the region of the adjustable parameter r is determined rigorously and accurately so as to improve the robustness of the controller . Then, for the model-based fuzzy control (MBFC). the robustness can be ach ieved by updating the coefficient matrix Theta(alpha (k)) on-line, Compared with the conventional design, the derived formulae for the MBFC are for sy stems with multi-output rather than single output. Finally, some experiment s on vibration control of a thin-plate system were carried out. (C) 2001 El sevier Science Ltd. All rights reserved.