Abstract:

A control strategy，in which PID controller is adopted in inner-loop and self-tuning fuzzy predictive functional control algorithm is used in outer-loop，is proposed for cascade time-delay system.The internal loop and the main plant constitute generalized control plant which is controlled by the sum of inputs produced respectively by predictive functional controller and self-tuning fuzzy controller.The strategy is applied in main steam temperature of thermal plant.Simulation results show that the proposed strategy has better control performances compared with other control algorithm.