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fractional column 分餾塔,分餾柱。

fractional currency

Abstract : large time delay exists in complicated practical processes . for example , in fccu ( fluidized catalytic cracker unit ) reactor - regenerator , the feed is preheated through heat exchanging from fractional column slurry , thus results in large time delay . a predictive control system is designed for such processes , where the kernal algorithm is dynamic matrix control . application results show that the control behavior is improved than original pid control 文摘:實際的復雜工業過程,往往具有大的時滯,例如:煉油廠催化裂化裝置的反應再生系統,其原料油預熱通過油漿換熱實現,因此時滯特別大.本文針對這一類大的時滯過程,設計了以動態矩陣控制為核心算法的預測控制系統,運行實踐表明:這一控制方案比原pid控制在控制質量上有較大提高