JPS58165115A - Controlling method of mixture ratio - Google Patents

Controlling method of mixture ratio

Info

Publication number
JPS58165115A
JPS58165115A JP4743182A JP4743182A JPS58165115A JP S58165115 A JPS58165115 A JP S58165115A JP 4743182 A JP4743182 A JP 4743182A JP 4743182 A JP4743182 A JP 4743182A JP S58165115 A JPS58165115 A JP S58165115A
Authority
JP
Japan
Prior art keywords
flow rate
control
control loop
loop
signal
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.)
Pending
Application number
JP4743182A
Other languages
Japanese (ja)
Inventor
Yasuhiro Miyoshi
康弘 三好
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP4743182A priority Critical patent/JPS58165115A/en
Publication of JPS58165115A publication Critical patent/JPS58165115A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
    • G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Non-Electrical Variables (AREA)

Abstract

PURPOSE:To control a mixture ratio with a high precision even if a disturbance occurs in a slave flow rate control loop, by feeding back the control of the slave flow rate control loop to a master flow rate control loop. CONSTITUTION:The signal from a flow rate setter 10 and the signal from a flow rate detector 61 are inputted to a deviation operator 21, and the deviation between them is inputted to a control operating part 31 through a deviation operator 23, and the operation signal to a control valve 71 is outputted to control the flow rate. This loop is called the master flow rate control loop. The measurement signal from the flow rate detector 61 of this loop is multiplied in a ratio operator 51 by a constant, and the deviation between this multiplied signal and the signal from a flow rate detector 62 is operated in a deviation operator 22, and the deviation signal is inputted to a control operating part 32 to control the flow rate of a control valve 72. This control loop is called the slave flow rate control loop. The measured value from the flow rate detector 62 of this loop is multiplied in a ratio operator 52 by a constant and is inputted to the operator 23 to correct the deviation signal of the master flow rate control loop.

Description

【発明の詳細な説明】 本発明は流皺制御方法に係り、特に２種以上の流体の流
量比率を精度良く制御する場合に好適な制御方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wrinkle control method, and particularly to a control method suitable for precisely controlling the flow rate ratio of two or more types of fluids.

従来の混合比率制御方法は、主たる流量制御ループと従
九る制御ループが単にカスケード接続されていたので、
従たる制御ループに対する外乱により混合比耶装置が低
下するというような欠点があった。In the conventional mixing ratio control method, the main flow rate control loop and the secondary control loops were simply connected in cascade.
Disturbances to the secondary control loop have the disadvantage of reducing the mixing ratio system.

本発明の目的は、従える＆量制御ルー１の制御結果を主
たるｆｉ１１制御ループにフィードバックすることによ
〕、従たる制御ループに外乱が生じた場合に鳴混合比皐
を精度良く制御する制御方法を提供することＩ／ｃＴｏ
る。An object of the present invention is to provide a control method for accurately controlling the sound mixture ratio when a disturbance occurs in the secondary control loop by feeding back the control results of the secondary & quantity control loop 1 to the main fi11 control loop. To provide I/cTo
Ru.

２楡以上の流体の流量の比率を一定に保つ比率制御系に
おいて、主たる施蓋制御ループと従九る施蓋制御ループ
の単なるカスケード接続では、主たる流量制御ループに
対する外乱の情＠は従たる流量制御ループに伝達されそ
の流量を制御し比率を一定に保つことは可能でるるが、
従たるｔＳ、＠制御ルー１に対する外乱の情報は生える
施蓋制御ループに伝達されない丸め比率を一定に保つこ
とが不可能となる。そこで、この従たる流量制御ループ
の制御結果を生える流量制御ループにフィードバックす
ることにより、従える制御ループから主える制御ループ
への情報伝達音可能にし、従える流量制御ループに外乱
が生じ丸場合にも流量の比率を常に一定に保つことを可
能にする。In a ratio control system that keeps the ratio of flow rates of two or more fluids constant, if the main lid control loop and the secondary lid control loop are simply connected in cascade, the information of disturbance to the main flow rate control loop is determined by the secondary flow rate. Although it is possible to control the flow rate and keep the ratio constant by transmitting it to the control loop,
Information on the disturbance to the subsequent tS, @control loop 1 is not transmitted to the resulting lid control loop, making it impossible to keep the rounding ratio constant. Therefore, by feeding back the control results of this subordinate flow rate control loop to the producing flow rate control loop, it is possible to transmit information from the subordinate control loop to the main control loop, and even if a disturbance occurs in the subordinate flow rate control loop. It makes it possible to always keep the flow rate constant.

以下、本発明の一実ＩＩＡ的を第１図によ〕説明する・ ａｍ設定慟１０よ〕の信号と流量検出器６１よ夛の信号
を偏差演算ｆ１２１に入力し、設定籠と測定筐の一差を
偏差演算器２３を介して制御演算部３１に人力し、ｔＩ
ｉｌｌ１１弁７１に対する操作信号を出力しｆｌＩＬ飯
を制御する。このループを主たる流量制御ループと呼ぶ
。この主たる流量制御ループの流量検出器６１よすの測
定籠信号は比重演算器５１に人力され、足数倍され喪後
、−差演算器２２に入力され、流量検出器６２よシの信
号とのｔｍｍ差色り、その−差信号は制御演算部３２に
入力され、制御弁７２４Ｃ対する操作信号を出力し流量
管制物する。この制御ループを従えゐ流量制御ループと
呼ぶ、この従たる流量制御ループの流量検出器６２よシ
の測定直信号は北本演算器５２によシ定数倍され、偏差
演算器２３に入力され、主える流量制御ループの偏差信
号ＫＩｉＩ正をかける。本夾施鉤によれば、従たる流量
制、−ループに対する外乱によるＲ量比率の変動を防：
°に効果かめる。Hereinafter, one aspect of the present invention will be explained with reference to FIG. 1. The signal from the am setting cage 10 and the signal from the flow rate detector 61 are input to the deviation calculation f121, and the difference between the setting cage and the measuring cage is calculated. The difference is manually input to the control calculation unit 31 via the deviation calculation unit 23, and tI
An operation signal for the ill11 valve 71 is output to control the flIL meal. This loop is called the main flow control loop. The measurement signal from the flow rate detector 61 of this main flow rate control loop is input to the specific gravity calculator 51, multiplied by a factor, and then input to the -difference calculator 22, where it is combined with the signal from the flow rate detector 62. The tmm difference signal is input to the control calculation section 32, which outputs an operation signal for the control valve 724C to control the flow rate. This control loop is called the secondary flow rate control loop.The measured direct signal from the flow rate detector 62 of this secondary flow rate control loop is multiplied by a constant by the Kitamoto calculator 52, inputted to the deviation calculator 23, and then The deviation signal KIiI positive of the flow rate control loop is applied. According to this method, secondary flow rate control prevents fluctuations in the R amount ratio due to disturbances to the loop:
You can see the effect in °.

本発明によれば、従える流量制御ループの制御結果を生
える流量制鞠ループにアイ−ドパツクできるので、常Ｋ
ｆＬ体の混合比重を一足に保りことAccording to the present invention, it is possible to pack an eye into the flow control loop that produces the control result of the flow control loop that follows, so that
Keep the mixing specific gravity of the fL body at a constant level.

【図面の簡単な説明】[Brief explanation of the drawing]

゛　第１図は本発明の構成図である。 ゛ Fig. 1 is a block diagram of the present invention.

Claims (1)

【特許請求の範囲】[Claims] １、主たるＲ，臘制御ループとその制御結果に従鵬する
従たる訛蓋制御ループより成る流量比率制御禾において
、従たる施蓋制御ループの制御結果を王たる流Ｍ制御ル
ープにフィードバックしその操作皺に補正をかけるよう
な景累を設−またことを特許とする混合比率制御方法。1. In the flow rate ratio control system, which is composed of a main R control loop and a subordinate cover control loop that follows its control results, the control results of the subordinate cover control loop are fed back to the main flow M control loop. This is a patented mixing ratio control method that provides a pattern that compensates for operational wrinkles.
JP4743182A 1982-03-26 1982-03-26 Controlling method of mixture ratio Pending JPS58165115A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4743182A JPS58165115A (en) 1982-03-26 1982-03-26 Controlling method of mixture ratio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4743182A JPS58165115A (en) 1982-03-26 1982-03-26 Controlling method of mixture ratio

Publications (1)

Publication Number Publication Date
JPS58165115A true JPS58165115A (en) 1983-09-30

Family

ID=12774956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4743182A Pending JPS58165115A (en) 1982-03-26 1982-03-26 Controlling method of mixture ratio

Country Status (1)

Country Link
JP (1) JPS58165115A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6146606U (en) * 1984-08-30 1986-03-28 横河電機株式会社 process control equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6146606U (en) * 1984-08-30 1986-03-28 横河電機株式会社 process control equipment

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