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      2. AIO288模擬量輸入輸出模塊

        價(jià)格
        ¥100.00

        型號(hào)
        AIO288

        品牌
        進(jìn)口

        所在地
        暫無

        更新時(shí)間
        2021-10-29 17:48:33

        瀏覽次數(shù)


          Profit Loop PKS是一個(gè)基于模型預(yù)測控制器。Profit Loop PKS Assistant是一個(gè)簡化Profit Loop PKS配置活動(dòng)的工具,來實(shí)現(xiàn)模型定義。在PVC的控制系統(tǒng)設(shè)計(jì)過程中,我們?cè)赑VC控制邏輯中選定了幾個(gè)控制效果不理想的控制回路實(shí)施從PID轉(zhuǎn)到Profit Loop的控制,均取得了理想的效果。  AIO288模擬量輸入輸出模塊

          廈門仲鑫達(dá)自動(dòng)化設(shè)備有限公司

          聯(lián)系人:李素云

          QQ

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          座機(jī):


            首先應(yīng)該根據(jù)不同回路類型的特點(diǎn),在PVC控制方案中,選擇要實(shí)現(xiàn)Profit Loop控制的控制回路。

            PID-PL 功能塊作為功能塊的一種,可以在Control Builder中的功能塊Library中直接調(diào)用,實(shí)現(xiàn)替代傳統(tǒng)PID功能塊作用。在確定了要實(shí)現(xiàn)Profit Loop控制的控制回路以后,在組態(tài)的時(shí)候應(yīng)確定用PID-PL 功能塊。

            應(yīng)用Profit Loop,需要獲得過程模型。進(jìn)行過程模型系統(tǒng)識(shí)別,既是過程如何相應(yīng)輸入變化的數(shù)學(xué)表達(dá)式,使控制器過去的輸出OP值和將來預(yù)測的PV值聯(lián)系起來。Profit Loop PKS model可以從現(xiàn)有的PID參數(shù)直接轉(zhuǎn)換而來,也可以通過階越函數(shù)測試獲得。在濱化PVC項(xiàng)目中,我們主要應(yīng)用了第二種方法來獲得系統(tǒng)模型。

            在測試完成后,對(duì)回路進(jìn)行整定的方式有兩種,種可以通過輸入PID參數(shù)實(shí)現(xiàn);第二種可以通過針對(duì)PID-PL回路輸入的整定參數(shù)實(shí)現(xiàn)。在第二種方式中通過簡單地增加性能比值來減慢調(diào)節(jié)動(dòng)作的速度,同時(shí)增加魯棒性。反之,如果調(diào)節(jié)器動(dòng)作太慢,則可以通過減少性能比值來加速閉環(huán)調(diào)節(jié)器的響應(yīng)。

            Honeywell公司的EPKS C300 DCS控制系統(tǒng),融入霍尼韋爾數(shù)十年的過程控制、資產(chǎn)管理、領(lǐng)域的經(jīng)驗(yàn),融合新控制和現(xiàn)場總線技術(shù)。應(yīng)用EPKS C300系統(tǒng)的濱化PVC項(xiàng)目于08年8月建成并投產(chǎn),運(yùn)行良好。同期建設(shè)的濱化的離子膜,三氯乙烯,粒堿,環(huán)氧丙烷等項(xiàng)目也應(yīng)用了EPKS C300系統(tǒng),也都取得了良好的經(jīng)濟(jì)效果。




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