The Temperature Control System Research Of Cold Tower Based On Feed-forward Fuzzy PID

Waste incineration technology is one of the main methods of garbage disposal. It has a good effect in general harmless and resources. Flue gas purification system is the most main one of the equipment in the garbage incineration system. And its core is the smoke wheeze cold control system. It will produce toxic gases such as dioxin if the export flue gas temperature is not stable, so as to cause the second air pollution. In the actual operation, it is difficult for conventional PID control method to meet its requirements because of the flue gas temperature fluctuations and difficulties in getting accurate mathematical model of system.In view of the feed-forward control can directly control disturbance. Compared with feedback control, it is fast and effective to restrain dynamic and static deviation. This article will use the polystyrene feed-forward control in urgent cold control system, design the corresponding mathematical model, make out the related parameters and finally make some simulation in the simulink tool box by Matlab7.0 simulation. The results show that the feed-forward control can indeed to interference with effective compensation.In view of the difficulty to obtain accurate mathematical model of rapid cooling control system, this paper will use fuzzy adaptive PID control method, design corresponding controller, and make some simulation. The simulation results show that the fuzzy PID controller has the very good control effect, guaranteed the rapid cooling efficiency and stability of the control system. This article verify the feasibility of fuzzy PID controller in temperature control system ,through the Songjiang waste incineration plant of smoke's rising cold and taking off the acid project.