自己調整付ファジィ制御系の設計と蒸留塔への応用

概要

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A self-tuning fuzzy control system has been developed for industrial use. It has a hierarchy structure consisting of fuzzy control algorithms being identical to a feed-forward and feedback fuzzy controller at the lower loop and a learning self-tuning algorithm accommodating the control performance evaluation and gain adjustment function of a feedforward fuzzy controller at the upper loop. The self-tuning fuzzy controller has a function by which the feedforward controller gain is adquately adjusted by learning rules comparing both manipulated variables in feedforward and feedback controller.<BR>This control system was applied to the demethanizer column in an ethylene plant to confirm the design philosophy. The results indicates that the new control system is usable for the bottom temperature-control loop which has not been well-controlled.
社団法人化学工学会の論文