Laminar cooling control based on fuzzy-PID controller

Abstract

Strip coiling temperature is one important parameter of performance of hot rolled strip, and its laminar cooling control system is highly nonlinear. The combination of PID control and fuzzy control was put forward and a fuzzy self-tuning PID controller was built through the rules of fuzzy control based on the inapplicability on the time-lag, time-change, big-inertia, nonlinearity problems and the difficulty of PID controller parameters adjusting, the three parameters of PID controller can be adjusted adaptively online. It presents the control for the highly nonlinear, time-varying laminar cooling control system based on the fuzzy-PID controller. The simulation shows that the static dynamic quality of the system is better, and fuzzy-PID has good adaptability.