DEIF TYPE-DU-2/MKIIIORDER输入采样

设置回路增益一Ziegler 和Nicholas调节方法

一旦K、Tp和Tc等三个过程模型参数确定后.即可用来评价初始PID回路增益。下面的调节方法由Ziegler 和Nicholas在1940年代发展起来。幅比即闭路响应中第二峰值与第-峰值之比。

1.计算作用速率:

R= K/Tc

2.只对比例控制,计算Kp

Kp= 1/(R* Tp) = Tc/(K* Tp)

3.对于比例和积分控制

Kp=0.9/(R* Tp) =0.9* Tc/(K* Tp)

Ki=0.3* Kp/Tp

4.对于PID控制,

Kp= G/CR*

此处G为1.2-2.0

Ki=0.5* Kp/Tp

Kd=0.5* Kp* Tp

5.检查采样周期是否在(Tp+ Tc)/10至(Tp+ Tc)/1000之间。

还有一种“理想调节”方法,可获得最佳的SP改变响应,仅由Tp过程延迟或死时间延迟。

Kp=2* Tc/(3* K* Tp)

Ki= Tc

Kd= KiV4

如果使用微分项。

FLOWSERVE 5966RTSW  5966RTSW (NEW NO BOX)

FlowSERVE EEKAT147691 (A) HF 1110 S64995 Cartridge Mechanical Seal P50 1750

NEW FLOWSERVE SUMMIT 2175S QUENCH GLAND

FLOWSERVE 130122.999.000 POSITIONER * USED *

FLOWSERVE GEB2660312B-02 SEAL ASSY SIZE 2.746'' NEW

NEW Flowserve 63542-CGS 3.010'' 2SGL Cartridge PTO Dura Seal EU5EFVVV

Gestra Flowserve NRS 1-51 Wasserstandbeg<wbr>renzer

FLOWSERVE 23HM754Z120A  23HM754Z120A (USED TESTED CLEANED)

Flowserve - GESTRA STEAM SYSTEM - NRG 17-51 - PN 63-  46 bar - D-28215 Bremen

Flowserve 5GASM0DO Hydraulic Rotary Pump

FLOWSERVE 323745 NSMP

FLOWSERVE EEMB377288I-5 TX 161769

FLOWSERVE 1-E444466RTSER<wbr>2 NSNP

FlowServe split mechanical seal 7.50" PSS 322701 1682624 New 8435902 MV3P7500PA3

FLOWSERVE PUMP ASSY A2R14701-11 NEW IN BOX

FLOWSERVE:- F5GU-MECXXX-00<wbr>-Z: (POPM1254)  ELECTRO PNEUMATIC POSITIONER

FLOWSERVE GIB2135651B-Q1 UNMP

Flowserve 981994 Repair Kit

Flowserve 185137-IP Kammer 12" 300# IP Actuator with IP Built In Transducer

FLOWSERVE 1-AKH3PFA  1AKH3PFA (USED TESTED CLEANED)

FLOWSERVE F5NU-MECXXX-00<wbr>-Z  F5NUMECXXX00Z (BRAND NEW)

Flowserve 206B10X31348 Ingersoll Rand 3x7sa Centrifugal Pump Shaft

DEFINOX 2'' SANITARY VALVE DN51-2'' w FLOWSERVE B085S10 ACTUATOR NEW 

DURCO 3 WAY VALVE 1.5'' MG411 FLOWSERVE AUTOMAX ACTUATOR SOLENOID VALVE *NEW*

=