Research On The Combining LTI Causation System And Fuzzy System

It has been widely used, for fuzzy control system. It usually combines the LTI causation system and fuzzy system in a fixed construction and sets accurate phases to be fundamental phases. Actually, this combination method is based on the fuzzy phase on the joint point. However, through this combination method, the constructed mixed system is hard to analyze the fuzzy system and the ability to confine the whole functions is limited. Therefore, this paper studies ways of combinations of the LTI causation system and classical system.First, this paper illustrates the basis of the combination of the LTI causation system and classical system, and then proposes various methods, and finally, with the listing, the author proposes the PID controller based on behaviors.Besides on the method that is construed on the basis of fuzzy phase on the joint, the author proposes other methods based on structure or outer behaviors. The efforts compensate the shortages of existed controllers to some extents. Eventually, the author builds a new kind of controller, PID controller based on fuzzy behaviors, with good properties.