THE IDENTIFICATION OF THE OPERATING REGIMES OF THE CONTROLLERS BY THE HELP OF THE PHASE TRAJECTORY
Keywords:fuzzy interpolative controllers, adaptive control, phase trajectory, heuristic control rules.
AbstractThe paper presents an on-line identification method of the operating regimes of the closed loop con-trollers. This method uses as main tool the phase trajectory of the control error, which is analysed in a qualitative manner. The operating domain is divided into four regimes: variable, steady, oscillating and unstable. This operation may be performed by fuzzy or by interpolative controllers, on the base of general knowledge on the PID controllers adjustment. A high quality self-adaptation of the controllers may thus be obtained, covering all the possible operation regimes.
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