Control technology ; graphical symbols and identifying letters for process control engineering ; representation of details 控制技術(shù).流程控制技術(shù)用圖示符號(hào)和標(biāo)識(shí)字母.詳圖
Control technology ; graphical symbols and identifying letters for process control engineering ; symbolic representation for functions 控制技術(shù).過程控制圖形符號(hào)和標(biāo)識(shí)字母.功能圖形
Proportional - integral - derivative ( pid ) is one of the most widely used control strategies in the process control engineering practice 在控制工程實(shí)踐中, pid控制是應(yīng)用最為廣泛的一種控制策略。
Specification for representation of process control engineering requests in p i diagrams and for data exchange between p id tools and pce - cae tools , text english P i圖中過程控制工程要求的編寫規(guī)范與p id工具和pce -
However , the artificial methods for tuning pid parameters are so far applied commonly regardless of in the domestic or overseas process control engineering practice , which cause the pid tuning job extremely time - consuming and can not assure of the best control system performances consequently , particularly for these time variant processes 然而,至今控制系統(tǒng)的pid參數(shù)整定工作無論是在國內(nèi)還是在國外的控制工程實(shí)踐中,主要采用的還是人工整定法。這使得pid參數(shù)的整定工作不僅費(fèi)時(shí),而且難以保證控制系統(tǒng)性能最佳,尤其是對(duì)于被控對(duì)象特性隨工況發(fā)生變化的系統(tǒng), pid參數(shù)人工整定法更不能滿足系統(tǒng)的要求。