Abstract
The characteristic of the gray prediction control is less datum, poor information and small calculating amount, and the fuzzy inference rule has the characteristic of approximation linear function. Combined with the gray prediction and fuzzy PID control, a design method of fuzzy PID control algorithm based on gray prediction is presented. The method is applied polymerizing-kettle's temperature control system, which has the performance of strong inertia, time-varying and uncertain long time-delay. The simulation results show that the control algorithm using fuzzy PID control based on gray prediction has the better performance than that of traditional PID control algorithm. It makes small overshooting, short adjusting time and good robustness, which is a effective method to improve polymerizing-kettle's temperature control.
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