Research of multi-variable coupling system based on parameter adjusting fuzzy PI method

In this paper, a parameter adjusting fuzzy PI method for multi-variable coupling systems is presented based on the analysis of influences of fuzzy control and PI method on controlled systems. Two independent fuzzy controllers are devised to identify proportional coefficient incremental and integral coefficient incremental, which achieves good results of dynamic performance. Furthermore, two controllers are designed independently, which makes the controller´s design job easier. Then, the proposed structure is used in the simulation of practical industrial plants. Results of simulation show that the proposed method has better controlling effects and superior performance.