Self-adaptive Fuzzy PID Control for Three-tank Water

摘要

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.