140ARI03010
140ARI03010
從整定方式來分,調(diào)節(jié)器有普通型和電壓整定型兩種。普通型和電壓整定型調(diào)節(jié)器的基本組成是相同的,區(qū)別只是在參數(shù)整定電路方面。在普通型調(diào)節(jié)器中,參數(shù)的整定只能就地進(jìn)行,可以用調(diào)整電位器的阻值或用波段開關(guān)切換電阻或電容來改變整定參數(shù);在電壓整定型調(diào)節(jié)器中,整定參數(shù)P, TI、TD受外給電壓控制,因此可以做到遠(yuǎn)程整定、第三參數(shù)整定、自整定等。下面圍繞普通型PID調(diào)節(jié)器進(jìn)行分析討論。
PID調(diào)節(jié)器的組成可以用圖4-36所示的方框圖表示。調(diào)節(jié)器主要由翰人電路、運(yùn)算電路和輸出電路三部分組成。但在有的調(diào)節(jié)器中,輸出電路與運(yùn)算電路是一個不可分荊的整體。此外,還可能附帶有指示電路、手動操作電路及限幅電路。指示電路分為偏差指示、給定值與輸入值的全刻度指示兩種。
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Stopcircuit-Ent?relec GMU 15U Single Pole Breaker
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