KEYWORDS: Fuzzy logic, Control systems, Mathematical modeling, Resistance, Nonlinear control, Systems modeling, Mathematics, Liquids, Complex systems, Control systems design
Three-tank water represents a typical plant with non-linearity and large time delay. By combining the linearization method for non-linear plant, PID control structure and fuzzy control based on T-S model, the self-adaptive fuzzy PID control of the three-tank water is devised. The strategy aims at improving the control performance of the three-tank water by weighing the membership function to produce PID parameters and making parameters vary steadily with the variation of water level . Simulation results show that the control strategy proposed in this paper is correct and effective.
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