The identification of the operating regimes of the controllers using the phase trajectory of the error
Valentina Emilia Bălaş, Maruis M. Balas · 2006
Abstract:- The paper presents a soft computing on-line identification method of the operating regimes of the closed loop controllers. The approach is based on the qualitative analyze of the phase trajectory of the error. Four operating regimes are considered: transitory, steady, oscillating and unstable. The knowledge standing behind this analyze is provided by the linear PID controllers ’ adjustment theory. The family of Fuzzy Self Adaptive Interpolative Controllers was developed on this base. The existing case studies are mentioned, prov-ing the performance of this method that can cope with a wide domain of applicative situations in the field of adaptive control. Key-Words:- fuzzy interpolative controllers, adaptive control, phase trajectory, heuristic adaptation rules. 1