JPS6161121B2 - - Google Patents
Info
- Publication number
- JPS6161121B2 JPS6161121B2 JP11281679A JP11281679A JPS6161121B2 JP S6161121 B2 JPS6161121 B2 JP S6161121B2 JP 11281679 A JP11281679 A JP 11281679A JP 11281679 A JP11281679 A JP 11281679A JP S6161121 B2 JPS6161121 B2 JP S6161121B2
- Authority
- JP
- Japan
- Prior art keywords
- deviation
- analog memory
- signal
- analog
- minimum drive
- 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.)
- Expired
Links
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 1
Landscapes
- Feedback Control In General (AREA)
Description
【発明の詳細な説明】
本発明は、アナログサブループのアナログメモ
リを設定目標値に設定することによりプラントを
制御する、改良された設定値制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved set point controller for controlling a plant by setting the analog memory of an analog subloop to a set point value.
従来の設定値制御装置においては、アナログメ
モリ操作器に送られる操作量信号がアナログメモ
リ操作器固有の最小駆動信号より小の時は、操作
器が動作しない。このため制御対象にアナログメ
モリ操作器固有の最小駆動量に対応する偏差が残
つてしまい、この偏差分が設定目標値の許容偏差
より大のときには制御系にとつて非常に重大なこ
とになつていた。すなわち制御系において操作対
象の目標値は、許容偏差以内になければ、その制
御性が悪くなり、自動制御系を構成することが極
めて困難になる。 In conventional set point control devices, when the manipulated variable signal sent to the analog memory manipulator is smaller than the minimum drive signal specific to the analog memory manipulator, the manipulator does not operate. As a result, a deviation corresponding to the minimum drive amount unique to the analog memory controller remains in the controlled object, and if this deviation is larger than the allowable deviation of the set target value, it becomes extremely serious for the control system. Ta. That is, if the target value of the object to be operated in the control system is not within the allowable deviation, the controllability will deteriorate and it will be extremely difficult to configure an automatic control system.
したがつて本発明は、操作量演算器から出力す
る操作量信号が、操作器の最小駆動信号より小の
時、この操作量信号を最小駆動信号に置き替え
て、アナログメモリの実アナログ信号と与えられ
た目標値との偏差が許容偏差以内に達するまでア
ナログメモリ操作量を出力し、アナログメモリ操
作器固有の最小駆動量に起因する偏差を改善し
た。前記欠点のない設定値制御装置を提供するこ
とを目的とする。 Therefore, in the present invention, when the manipulated variable signal output from the manipulated variable computing unit is smaller than the minimum drive signal of the operating device, this manipulated variable signal is replaced with the minimum drive signal, and the manipulated variable signal is replaced with the minimum drive signal and the actual analog signal of the analog memory is replaced. The analog memory operation amount is output until the deviation from the given target value reaches within the allowable deviation, thereby improving the deviation caused by the minimum drive amount specific to the analog memory operation device. It is an object of the present invention to provide a set value control device that does not have the above-mentioned drawbacks.
以下本発明を図面を参照して説明する。第１図
は本発明の一実施例を示し、１はアナログメモリ
の目標値を出力する目標値発生器で、この目標値
発生器１の出力する目標値信号ａと、制御対象で
あるアナログメモリ７の実アナログメモリ信号ｇ
を加減算器２に入力して、目標値との偏差信号ｂ
を算出する。この偏差信号ｂは、操作量演算器３
に入力して、操作を終了すべきかどうかを判定す
る。 The present invention will be explained below with reference to the drawings. FIG. 1 shows an embodiment of the present invention, in which reference numeral 1 denotes a target value generator that outputs a target value of an analog memory, and a target value signal a output from this target value generator 1 and an analog memory to be controlled. 7 real analog memory signal g
is input to the adder/subtractor 2, and the deviation signal b from the target value is obtained.
Calculate. This deviation signal b is the manipulated variable calculator 3
to determine whether the operation should be terminated.
すなわち、偏差信号ｂが許容偏差以内であれ
ば、操作終了信号ｈを出力する。又、許容偏差以
上の偏差があれば、偏差ｂに対応した操作量信号
ｃを出力する。５は高値選択回路で、最小駆動量
発生器４から出力する最小駆動量信号ｄと、操作
量信号ｃとを入力し、いずれか高値を選択して実
操作信号ｅを出力する。６は操作器で、操作終了
信号ｈが与えられていない時、アナログメモリ設
定信号ｆにて、アナログメモリ７を操作し、操作
終了信号ｈが与えられている時には操作を終了す
る。 That is, if the deviation signal b is within the allowable deviation, the operation end signal h is output. Furthermore, if there is a deviation greater than the allowable deviation, a manipulated variable signal c corresponding to the deviation b is output. Reference numeral 5 denotes a high value selection circuit which inputs the minimum drive amount signal d output from the minimum drive amount generator 4 and the operation amount signal c, selects the higher value, and outputs the actual operation signal e. Reference numeral 6 denotes an operating device which operates the analog memory 7 using the analog memory setting signal f when the operation end signal h is not given, and ends the operation when the operation end signal h is given.
次に第２図を用いて、本発明の動作を説明す
る。同図は本発明の設定値制御特性を示し、g1は
ｔ＝t1時点の実アナログメモリ信号はg1であり、
設定目標値ａとの偏差ｂは加減算器２にて、ｂ＝
ａ−g1となる。このｂに対応するアナログメモリ
操作量信号ｃが操作量演算器３にて発生される。
最小駆動信号ｄに対応する偏差を△Ｙとおき、又
アナログメモリ設定の許容誤差を△Ｘとおくと、
偏差ｂは最小駆動量に対応する偏差△Ｙより大で
あるため、高選択回路５の出力はｅ＝ｃとなる。
この結果操作器６は、アナログメモリ操作信号ｆ
により、アナログメモリ７を操作し、ｇ＝g2まで
操作する。ｔ＝t2時点で実アナログメモリ信号を
読み込むと、g2になつており、この時、偏差ｂは
ｂ＝ａ−g2となる。しかし偏差ｂが最小駆動量ｄ
に対応する上記偏差△Ｔより小になつていたとし
ても、アナログメモリ設定の許容偏差△Ｘより大
のため何らかの操作をする必要がある。 Next, the operation of the present invention will be explained using FIG. 2. The figure shows the set value control characteristics of the present invention, where g 1 is t=t 1. The actual analog memory signal at time t is g 1 ,
The deviation b from the set target value a is determined by the adder/subtractor 2, b=
It becomes a-g 1 . An analog memory manipulated variable signal c corresponding to this b is generated by the manipulated variable calculator 3.
Letting the deviation corresponding to the minimum drive signal d be △Y, and let the allowable error of analog memory setting be △X, then
Since the deviation b is larger than the deviation ΔY corresponding to the minimum drive amount, the output of the high selection circuit 5 becomes e=c.
As a result, the controller 6 outputs the analog memory operation signal f
The analog memory 7 is operated until g= g2 . When the actual analog memory signal is read at time t= t2 , it becomes g2 , and at this time, the deviation b becomes b=a- g2 . However, the deviation b is the minimum drive amount d
Even if it is smaller than the above-mentioned deviation ΔT corresponding to , it is larger than the allowable deviation ΔX of the analog memory setting, so some kind of operation is required.
第３図は従来装置の設定値制御特性を示し、上
記の場合、最小駆動量に対応する偏差以下にある
ため、何の操作も行なえないということで操作を
行なわず、ａ−g2の偏差は不可避の偏差として処
理していたものである。しかし、本発明では、ｔ
＝t2時点で、高値選択回路５の出力はａ＝ｄとな
り、最小駆動量に相当する信号にてアナログメモ
リ７をｇ＝g3まで操作する。ｔ＝t3時点では偏差
ａ−g3となり、許容偏差△Ｘ以内になつているた
め、操作量演算器３からの信号ｈにて、操作器６
がブロツクされ、アナログメモリ７の設定操作は
終了する。 Figure 3 shows the set value control characteristics of the conventional device. was treated as an unavoidable deviation. However, in the present invention, t
At the time point = t2 , the output of the high value selection circuit 5 becomes a=d, and the analog memory 7 is operated up to g= g3 with a signal corresponding to the minimum drive amount. At the time of t= t3 , the deviation is a-g 3 , which is within the allowable deviation △X.
is blocked, and the setting operation of the analog memory 7 is completed.
本発明装置と従来装置との大きな違は、ｔ＝t2
での処理である。すなわち本発明においては、最
小駆動量に相当する偏差以下の偏差が出た時に
は、最小駆動量分の操作を行なうことにより、よ
り目標値に近づけることが可能であるという点に
特徴がある。例えば、最小駆動量に相当する偏差
があるとき、最小駆動量の操作を行うと、偏差
が′零′となる。このことは、前記第２図でも明か
である。第４図は、上記操作を示すフローチヤー
トである。 The major difference between the device of the present invention and the conventional device is that t=t 2
This is the process. That is, the present invention is characterized in that when a deviation less than the deviation corresponding to the minimum drive amount occurs, it is possible to bring the target value closer to the target value by performing an operation corresponding to the minimum drive amount. For example, when there is a deviation corresponding to the minimum drive amount, if the minimum drive amount is operated, the deviation becomes 'zero'. This is also clear from FIG. 2 above. FIG. 4 is a flowchart showing the above operation.
なお本発明の説明において、前記第２図におい
てはｔ＝t2以降の操作が１回で許容偏差以内に到
達することを説明したが、最小駆動量に相当する
操作を数回繰返すことになつても前記考え方は変
わらない。又、同図はｇ＜ａの場合の操作につい
て説明したが、ａ＜ｇの場合も前記同様に適用す
ることができる。 Furthermore, in the explanation of the present invention, in the above-mentioned FIG. 2, it was explained that the operation after t=t 2 reaches within the allowable deviation in one operation, but the operation corresponding to the minimum drive amount will be repeated several times. However, the above idea remains the same. Further, although the operation in the case of g<a has been explained in the same figure, the above-described operation can also be applied to the case of a<g.
このようにして本発明によれば、設定目標値の
許容偏差と、最小駆動量との関係に無駄な注意を
払わなくてもよいため、チユーニングが簡単であ
ると共に、最小駆動量に相当する偏差未満の許容
偏差に追い込むことのできる効果的な設定値制御
装置が提供できる。 In this way, according to the present invention, there is no need to pay unnecessary attention to the relationship between the allowable deviation of the set target value and the minimum drive amount, so tuning is easy and the deviation corresponding to the minimum drive amount An effective set point control device can be provided which can drive the tolerance deviation below.
第１図は本発明の一実施例を示すブロツク図、
第２図は本発明の設定値制御特性図、第３図は従
来装置の設定値制御特性図、第４図は本発明の動
作を示すフローチヤートである。
１…設定目標値発生器、２…加減演算器、３…
操作量演算器、４…アナログメモリ最小駆動量発
生器、５…高値選択回路、６…操作器（アナログ
メモリ設定器）、７…制御対象（アナログメモ
リ）、ａ…設定目標信号、ｂ…偏差信号、ｃ…ア
ナログメモリ操作量信号、ｄ…アナログメモリ最
小駆動量信号、ｅ…実操作量信号、ｆ…アナログ
メモリ設定信号、ｇ…アナログメモリ信号、ｈ…
操作終了信号、△Ｘ…許容偏差、△Ｙ…最小駆動
量に対応する偏差。
FIG. 1 is a block diagram showing one embodiment of the present invention;
FIG. 2 is a set value control characteristic diagram of the present invention, FIG. 3 is a set value control characteristic diagram of a conventional device, and FIG. 4 is a flowchart showing the operation of the present invention. 1... Setting target value generator, 2... Addition/subtraction calculator, 3...
Manipulated amount calculator, 4... Analog memory minimum drive amount generator, 5... High value selection circuit, 6... Operating device (analog memory setter), 7... Controlled object (analog memory), a... Set target signal, b... Deviation Signal, c...Analog memory operation amount signal, d...Analog memory minimum drive amount signal, e...Actual operation amount signal, f...Analog memory setting signal, g...Analog memory signal, h...
Operation end signal, △X...allowable deviation, △Y...deviation corresponding to the minimum drive amount.
Claims (1)
設定目標値発生器を備えアナログサブループのア
ナログメモリを設定することによりプラントを制
御する設定値制御装置において、前記設定目標値
発生器の出力と実アナログメモリ信号との偏差を
演算する加減算器、この加減算器で得られた偏差
が許容偏差内であるときは操作終了信号を出力し
一方前記加減算器で得られた偏差が前記許容偏差
内でないときはその偏差に応じてアナログメモリ
操作量を演算して出力する操作量演算器、アナロ
グメモリ最小駆動量信号を出力するアナログメモ
リ最小駆動量発生器、前記操作量演算器の出力と
アナログメモリ最小駆動量発生器の出力とを入力
していずれか高い値を選択する高値選択回路、こ
の高値選択回路の出力を入力して前記アナログメ
モリを操作し一方前記操作終了信号が入力された
ときは操作を停止する操作器とを具備し、前記ア
ナログメモリ操作信号をアナログメモリ設定器個
有の最小駆動量信号に置換えて設定値制御偏差を
許容偏差以内に抑制することを特徴とした設定値
制御装置。1. In a set value control device that is equipped with a set target value generator that outputs a set target value of an analog subloop and controls a plant by setting an analog memory of the analog subloop, the output of the set target value generator and the actual analog an adder/subtractor that calculates the deviation from the memory signal; when the deviation obtained by the adder/subtractor is within the tolerance, an operation end signal is output; however, when the deviation obtained by the adder/subtractor is not within the tolerance; A manipulated variable calculator that calculates and outputs an analog memory manipulated amount according to the deviation, an analog memory minimum drive amount generator that outputs an analog memory minimum drive amount signal, and the output of the manipulated variable calculator and the analog memory minimum drive amount. a high value selection circuit which inputs the output of the generator and selects one of the higher values, inputs the output of this high value selection circuit to operate the analog memory, and stops the operation when the operation end signal is input. What is claimed is: 1. A set value control device comprising: an operating device for suppressing a set value control deviation within an allowable deviation by replacing the analog memory operation signal with a minimum drive amount signal unique to the analog memory setting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11281679A JPS5638605A (en) | 1979-09-05 | 1979-09-05 | Control unit for set value |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11281679A JPS5638605A (en) | 1979-09-05 | 1979-09-05 | Control unit for set value |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5638605A JPS5638605A (en) | 1981-04-13 |
| JPS6161121B2 true JPS6161121B2 (en) | 1986-12-24 |
Family
ID=14596242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11281679A Granted JPS5638605A (en) | 1979-09-05 | 1979-09-05 | Control unit for set value |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5638605A (en) |
-
1979
- 1979-09-05 JP JP11281679A patent/JPS5638605A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5638605A (en) | 1981-04-13 |
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