JPH02126201U - - Google Patents
Info
- Publication number
- JPH02126201U JPH02126201U JP3508589U JP3508589U JPH02126201U JP H02126201 U JPH02126201 U JP H02126201U JP 3508589 U JP3508589 U JP 3508589U JP 3508589 U JP3508589 U JP 3508589U JP H02126201 U JPH02126201 U JP H02126201U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- subtracter
- function generator
- deviation
- proportional
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
Landscapes
- Feedback Control In General (AREA)
- Control Of Temperature (AREA)
Description
第１図は本考案のプラント制御装置の一実施例
のブロツク図、第２図は本考案のプラント制御装
置に使用する関数発生器の偏差信号と修正信号の
関係を表わすグラフ、第３図は従来のプラント制
御装置の一例のブロツク図、第４図は本考案及び
従来のプラント制御装置において蒸気温度と時間
の関係の一例を表わすグラフ、第５図は同制御弁
に対する修正信号と時間の関係の一例を表わすグ
ラフ、第６図は本考案及び従来のプラント制御装
置において蒸気温度と時間の関係の他の例を表わ
すグラフ、第７図は同制御弁に対する修正信号と
時間の関係の他の例を表わすグラフである。
図中、１……蒸気温度検出器（プロセス量検出
器）、２……蒸気温度設定器（プロセス量設定器
）、３……引算器、４……比例積分調節器、５…
…制御弁、６……管路、７……上限信号制限器、
８……関数発生器、Ｆ……燃料、Ｔ……検出され
た蒸気温度信号（検出されたプロセス量信号）、
Ｔ０……設定された蒸気温度信号（設定されたプ
ロセス量信号）、ΔＴ……偏差信号、Ｖ，Ｖ１，
Ｖ２，……Ｖ，ｎ……修正信号、Ｖ′……積分に
より得られた信号、Ｆｘ，Ｆｘ１，Ｆｘ２，……
Ｆｘｎ……関数発生器から出力される信号を示す
。
FIG. 1 is a block diagram of an embodiment of the plant control device of the present invention, FIG. 2 is a graph showing the relationship between the deviation signal and correction signal of the function generator used in the plant control device of the present invention, and FIG. A block diagram of an example of a conventional plant control device, FIG. 4 is a graph showing an example of the relationship between steam temperature and time in the present invention and the conventional plant control device, and FIG. 5 is a graph showing the relationship between a correction signal for the same control valve and time. A graph showing one example, FIG. 6 is a graph showing another example of the relationship between steam temperature and time in the present invention and the conventional plant control device, and FIG. 7 is a graph showing another example of the relationship between the correction signal for the same control valve and time. Figure 2 is a graph representing an example. In the figure, 1... Steam temperature detector (process amount detector), 2... Steam temperature setting device (process amount setting device), 3... Subtractor, 4... Proportional integral controller, 5...
...Control valve, 6...Pipeline, 7...Upper limit signal limiter,
8...Function generator, F...Fuel, T...Detected steam temperature signal (detected process amount signal),
T 0 ...Set steam temperature signal (set process amount signal), ΔT ... Deviation signal, V, V 1 ,
V2 ,...V, n ...corrected signal, V'...signal obtained by integration, Fx, Fx1 , Fx2 ,...
Fx n ... indicates a signal output from the function generator.
Claims (1)
ス量信号から両者の偏差信号を求める引算器と、
該引算器からの偏差信号を積分して得られた信号
を出力する比例積分調節器と、前記引算器からの
偏差信号に対応した信号を出力する関数発生器と
、前期比例積分調節器及び関数発生器からの信号
のうち低い信号を修正信号として選択し流体の流
量を制御する制御弁に与える上限信号制限器を備
えて成ることを特徴とするプラント制御装置。 a subtracter that calculates a deviation signal between the detected process quantity signal and the set process quantity signal;
a proportional-integral regulator that outputs a signal obtained by integrating the deviation signal from the subtracter; a function generator that outputs a signal corresponding to the deviation signal from the subtracter; and a proportional-integral regulator. and an upper limit signal limiter that selects a lower signal from among the signals from the function generator as a correction signal and applies it to a control valve that controls the flow rate of fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989035085U JPH0737122Y2 (en) | 1989-03-28 | 1989-03-28 | Plant control equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989035085U JPH0737122Y2 (en) | 1989-03-28 | 1989-03-28 | Plant control equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02126201U true JPH02126201U (en) | 1990-10-17 |
| JPH0737122Y2 JPH0737122Y2 (en) | 1995-08-23 |
Family
ID=31540137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989035085U Expired - Lifetime JPH0737122Y2 (en) | 1989-03-28 | 1989-03-28 | Plant control equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0737122Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6421606A (en) * | 1987-07-17 | 1989-01-25 | Japan Radio Co Ltd | Adaptive loop control system |
-
1989
- 1989-03-28 JP JP1989035085U patent/JPH0737122Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6421606A (en) * | 1987-07-17 | 1989-01-25 | Japan Radio Co Ltd | Adaptive loop control system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0737122Y2 (en) | 1995-08-23 |
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