Stabilization of fuzzy control systems
Constantin Voloşencu · 2008
Abstract:- The paper presents the way to use Lyapunov techniques to analyse and to assure stability of control systems with fuzzy PI controllers. The stability is assured based on a compensation of the input-output characteristic of the fuzzy blocks used in PI fuzzy controller. The compensation is made on fuzzy control law by the action in parallel of a crisp block for non-linear parts of input saturations. Stability analysis of fuzzy control systems for general processes is framed in the field of non-linear systems. The paper presents the way to prove absolute global internal stability in general cases. The correction principle is theoretically substantiated and methodologically structured with application at the fuzzy control of the second order processes.