140AVI03000
140AVI03000
根據(jù)工藝要求確定被調(diào)量,是自動(dòng)調(diào)節(jié)系統(tǒng)設(shè)計(jì)的一個(gè)重要組成部分。除了要考慮工藝上的其體要求及條件外,還要注意到所選擇的被調(diào)量能真正穩(wěn)定生產(chǎn)、提高產(chǎn)品產(chǎn)量和質(zhì)量、改善勞動(dòng)條件等,同時(shí)被調(diào)量還可直接測(cè)量。被調(diào)量有直接參數(shù)和間接參數(shù),選擇直接參數(shù)。例如,可選汽包水位作為蒸汽鍋爐汽包水位調(diào)節(jié)系統(tǒng)的被調(diào)量,因?yàn)樗贿^(guò)高,影響蒸汽質(zhì)量,水位過(guò)高和過(guò)低均會(huì)造成嚴(yán)重事故,直接與鍋爐安全運(yùn)行和產(chǎn)品質(zhì)量有關(guān)。當(dāng)不能用直接參數(shù)作為被調(diào)量時(shí),應(yīng)該選擇一個(gè)與直接參數(shù)有單值函數(shù)關(guān)系的間接參數(shù)作為被調(diào)量,并且靈敏度高。例如,鍋爐燃燒調(diào)節(jié)系統(tǒng),選擇煙氣中的氧氣作為被調(diào)量,它間接地反映了燃燒經(jīng)濟(jì)性。
◆ 企業(yè)名稱:廈門(mén)泰尼電氣有限公司
◆ 主營(yíng)業(yè)務(wù):DCS,PLC
◆ 經(jīng)營(yíng)模式: 貿(mào)易
◆ 貿(mào)易地區(qū): 全國(guó)
◆ : 小黃《女士》
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◆ (備注“01006”收)
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