Proportional - integral - derivative ( pid ) is one of the most widely used control strategies in the process control engineering practice 在控制工程實踐中, pid控制是應用最為廣泛的一種控制策略。
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,至今控制系統的pid參數整定工作無論是在國內還是在國外的控制工程實踐中,主要采用的還是人工整定法。這使得pid參數的整定工作不僅費時,而且難以保證控制系統性能最佳,尤其是對于被控對象特性隨工況發生變化的系統, pid參數人工整定法更不能滿足系統的要求。