Abstract

Although the conventional PID controllers are widely used in many fields, some complex control system cannot be controlled to achieve a desired performance index. A design method of the fuzzy PI controller that is based on the fuzzy tuning rules and formed by integrating two above control ideas is proposed in this paper. The design procedure about fuzzy PI control can be divided two steps: the first step is to build the fuzzy tuning rules by analysis, and to obtain the parameters of PI controller by reasoning, and then the control action can be determined by the PID control law. The simulation results and the practical control effects show that the compound fuzzy PI controller has better performance than that of the conventional PID control system and meet the performance requirements of the heating system better.

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