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經驗PID整定參數(shù)預置
對介質為流體(氣體、液體)情況,經驗PID整定參數(shù)參考如下,(在出所前在軟件組態(tài)中要設置好,到現(xiàn)場再細調或不動):
1、對流量調節(jié)(F):
一般P=120~200%,I=50~100S,D=0S;
對防喘振系統(tǒng):一般P=120~200%,I=20~40S,D=15~40S;
2、對壓力調節(jié)(P):
一般P=120~180%,I=50~100S,D=0S;
對放空系統(tǒng):一般P=80~160%,I=20~60S,D=15~40S;
3、對液位調節(jié)(L):
1]、大容器(直徑4米、高2米以上塔罐):一般P=80~120%,I=200~900S,D=0S;
2]、中容器(直徑2--4米、高1.5--2米塔罐):一般P=100~160%,I=80~400S,D=0S;
3]、小容器(直徑2米、高1.5米以下塔罐):一般P=120~300%,I=60~200S,D=0S;
4、對溫度調節(jié)(T):
一般P=120~260%,I=50~200S,D=20~60S;
上述參數(shù)是經驗性的東西,不是的。另外實際中,有時一個調節(jié)系統(tǒng)工藝過程對象或閥門(定位器)存在問題,也能靠改變PID參數(shù)予以克服,使自動投入。投自動需要耐心觀察、不斷修正。實踐中能否投入自動,關鍵的是閥門(定位器)、執(zhí)行器好用,動作靈活。
在一個串級調節(jié)系統(tǒng)(例如:有2個調節(jié)器)中,整個內環(huán)(副調,其Ko1*Kv1*Kc1>0)相當于主環(huán)的Kv,它始終為正。PID參數(shù)整定的結果:觀察曲線,一般為一階特性即可(當然理論上為二階衰減特性)。
MEASUREX 05379100 TERMINATION PIDP II/III REV B CIRCUIT BOARD (2C3)
MEASUREX 05379100/A TERMINAL CIRCUIT BOARD
MEASUREX 05379800 REV A PIP INPUT BUFFER MODULE
MEASUREX 05400300 TERMINATION CIRCUIT BOARD REV D (3F6)
MEASUREX 05400300 REV D TERMINATION RS485 COM W/AB
MEASUREX 05400300 TERMINATION BOARD
MEASUREX 05400400 REV B RS-232 TERMINATION W AB MODULE
MEASUREX 05400502 TERMINATION CIRCUIT BOARD REV B (3F6)
MEASUREX 05400502 PC BOARD TERMINATION
MEASUREX 05402001 REV B 04402000 REV B DC-DC MODULE
MEASUREX 05402100/D UNITEC 11POSITION BACKPLANE
MEASUREX 054021000/B UNITEC 11POSITION BACKPLANE
MEASUREX 054032 BACKPLANE
MEASUREX 0540320/C UNITEC DC POWER DISTRIBUTION BACKPLANE
MEASUREX 05404101 QSSB II BOARD
MEASUREX 05404101/B QSSB II
MEASUREX 05404300 REV B QVBSC TYPE II INTERFACE PROCESSOR CIRCUIT BOARD
MEASUREX 054046-00 REV.A SENSOR
Measurex 05405700 QBUS Comm I/F Current Loop Adapter PLC Processor Honeywell
MEASUREX 05405700 REV C RS485/332/CURRENT LOOP ADAPTER MODULE
MEASUREX 05405802/A Q-BUS F/O COMM I/F
MEASUREX 05407900 REV C ENDBELL POWER/INTERLOCK DISPLAY MODULE
MEASUREX 05410100 QSCP W/F/O I/F TYPE 2
Measurex 05413500 Transition Flat Panel PLC Processor Honeywell
MEASUREX 05413600, 044136 UAP TERMINATION TYPE II REV B HONEYWELL
Measurex 05415700 Four Channel PLC Processor Honeywell
Measurex 054162 Rev. A IR Edge Detector (Narrow Beam) Assembly
MEASUREX 05416300 REV A TRANSITION CONTROL PROCESSOR
Measurex 05423800 Mod Head Backplane W/SX12 Support
MEASUREX 05423800 Rev.B Board (588)
MEASUREX 054243000/F
MEASUREX 05424800/C PC BOARD
MEASUREX 059299300/B PC BOARD
MEASUREX 07548600/B1 PC BOARD
MEASUREX 07599100 BLOCK ROLLER
MEASUREX 08348100 REV. B PBS INFRARED DETECTOR
MEASUREX 08349701 ION CHAMBER RECEIVER ASSEMBLY
MEASUREX 083544 REV A
MEASUREX 08361901 REV 5
MEASUREX 08361901 REV 8