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经验PID整定参数预置
对介质为流体(气体、液体)情况,经验PID整定参数参考如下,(在出所前在软件组态中要设置好,到现场再细调或不动):
1、对流量调节(F):
一般P=120~200%,I=50~100S,D=0S;
对防喘振系统:一般P=120~200%,I=20~40S,D=15~40S;
2、对压力调节(P):
一般P=120~180%,I=50~100S,D=0S;
对放空系统:一般P=80~160%,I=20~60S,D=15~40S;
3、对液位调节(L):
1]、大容器(直径4米、高2米以上塔罐):一般P=80~120%,I=200~900S,D=0S;
2]、中容器(直径2--4米、高1.5--2米塔罐):一般P=100~160%,I=80~400S,D=0S;
3]、小容器(直径2米、高1.5米以下塔罐):一般P=120~300%,I=60~200S,D=0S;
4、对温度调节(T):
一般P=120~260%,I=50~200S,D=20~60S;
上述参数是经验性的东西,不是的。另外实际中,有时一个调节系统工艺过程对象或阀门(定位器)存在问题,也能靠改变PID参数予以克服,使自动投入。投自动需要耐心观察、不断修正。实践中能否投入自动,关键的是阀门(定位器)、执行器好用,动作灵活。
在一个串级调节系统(例如:有2个调节器)中,整个内环(副调,其Ko1*Kv1*Kc1>0)相当于主环的Kv,它始终为正。PID参数整定的结果:观察曲线,一般为一阶特性即可(当然理论上为二阶衰减特性)。
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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