JPS6385418A - Pressure generator - Google Patents
Pressure generatorInfo
- Publication number
- JPS6385418A JPS6385418A JP23253886A JP23253886A JPS6385418A JP S6385418 A JPS6385418 A JP S6385418A JP 23253886 A JP23253886 A JP 23253886A JP 23253886 A JP23253886 A JP 23253886A JP S6385418 A JPS6385418 A JP S6385418A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- generated
- signal
- cpu
- detector
- 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
Links
- 239000012530 fluid Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 238000012937 correction Methods 0.000 description 12
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000013256 coordination polymer Substances 0.000 description 2
- 235000009508 confectionery Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000035922 thirst Effects 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は圧力発生装置に係り、特に圧力を入力とする各
種工業計器の入出力の校正を行なう場合に使用される基
準圧力を発生させる圧力発生装置に関づ−る。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a pressure generator, and in particular to a pressure generator that generates a reference pressure used when calibrating the input and output of various industrial instruments that use pressure as input. Regarding the generator.
（従来の技術）
一般に基準圧力を発生させる基準圧力発生装置におりる
圧力値指令信号と発生圧検出器からの信号はアナログ信
号であり、アナログ信号のザーボ回路で信号処理を行っ
ている。(Prior Art) Generally, a pressure value command signal sent to a reference pressure generator that generates a reference pressure and a signal from a generated pressure detector are analog signals, and signal processing is performed in an analog signal servo circuit.
従来のこの種の圧力発生装置を第３図を参照して説明す
る。A conventional pressure generating device of this type will be explained with reference to FIG.
第３図において、符号１は供給圧力口であり、圧力流体
はこの供給圧力口１より供給され、流体の圧力調整を行
うυ−ボ弁２を介してυ１出ＩＩＩ ３より排出される
とともに発生圧力口４に所望の圧ツノを発生させる。上
記発生圧力口４には、校正を行う圧力を入力とり“る工
業計器が接続され、発生圧力口４における圧力は発生圧
検出器５で検出される。第３図において、符号１乃至５
で示される各機器を接続しでいる太い実線は圧力配管を
示づ−ものである。In Fig. 3, reference numeral 1 is a supply pressure port, and pressure fluid is supplied from this supply pressure port 1, and is discharged from υ1 output III 3 through a υ-bo valve 2 that adjusts the pressure of the fluid, and generated. A desired pressure horn is generated at the pressure port 4. The generated pressure port 4 is connected to an industrial instrument that inputs the pressure to be calibrated, and the pressure at the generated pressure port 4 is detected by a generated pressure detector 5.In FIG.
The thick solid lines connecting each device shown in the figure indicate pressure piping.
」−記発牛圧検出器５で検出され７ｊ検出飴は電気信号
に変換された後、増幅器５ａで増幅されてサーボ増幅器
６に入力される。一方、符号７は圧力設定信号であり、
発生圧力口４にて発生させたい圧力を設定した信号であ
り、この圧力設定信号７はサーボ増幅器６に入力され、
このリーボ増幅器６にて上述の発生圧検出器５からの信
号と比較演算がなされ、演算した結果をサーボ弁２に入
力し、サーボ弁２をコント１」−ルして設定した圧力と
発生圧力［］７′Ｉにおりる圧力とを等しくなるＪ、う
に制御系全体を制御している。なお、第３図において、
各機器を接続している細い実線は電気信舅用配線を示ず
ものである。”-Record The detection candy 7j is detected by the cow pressure detector 5 and converted into an electric signal, then amplified by the amplifier 5a and input to the servo amplifier 6. On the other hand, code 7 is a pressure setting signal,
This is a signal that sets the pressure to be generated at the generation pressure port 4, and this pressure setting signal 7 is input to the servo amplifier 6.
This Ribo amplifier 6 performs a comparison calculation with the signal from the generated pressure detector 5 mentioned above, inputs the calculated result to the servo valve 2, controls the servo valve 2, and sets the pressure and the generated pressure. [ ] 7'I The entire control system is controlled by J, which equalizes the pressure flowing to I. In addition, in Figure 3,
The thin solid lines connecting each device do not indicate electrical wiring.
（発明が解決しようとする問題点）
しかしながら、上述した従来の圧力発生装置においては
、高精度な基準圧力を発生させる！こめには装置を構成
する各構成要素がより高精良で４【（ブー ｑ
′−
ればならない。即ら、発生圧検出器５が精度良くなけれ
ば、発生圧力口４にて所定の圧力値か否かを正確に判断
できず、又、圧力設定信号７が高精度でなければ設定さ
れた圧力自体に誤差が生じてしまう等の不都合がある。(Problems to be Solved by the Invention) However, the conventional pressure generating device described above generates a highly accurate reference pressure! In this case, each component that makes up the device is of higher precision and 4 [(Boo q
′- must be. That is, if the generated pressure detector 5 is not accurate, it will not be possible to accurately determine whether or not the generated pressure port 4 has a predetermined pressure value, and if the pressure setting signal 7 is not highly accurate, the set pressure will not be accurate. There are inconveniences such as errors occurring in itself.
また、サーボ弁２や１ナ一ボ増幅器６も精度良く安定し
て動作することが必要とされる。このように、各構成要
素は高精度で安定して動作することが必要されるにしか
かわらず、各構成要素には特性」二（例えば、温度特性
や直線性）の限界があり、この特性改良には各種の補正
（例えば、温度補正や白線性補正）が必要とされる。と
ころが、前述したように、装置全体はアナログ油筒がな
されており、温度補正や白線性補正舌の特性改良がガか
しいという問題点がある。Further, the servo valve 2 and the single-channel amplifier 6 are also required to operate accurately and stably. In this way, although each component is required to operate stably with high precision, each component has limitations in its characteristics (e.g. temperature characteristics and linearity), and it is necessary to improve these characteristics. requires various corrections (for example, temperature correction and white line correction). However, as mentioned above, the entire device is an analog oil cylinder, and there is a problem in that it is difficult to improve the characteristics of the temperature correction and white line correction tongue.
また、制御系全体がアナログ信号処理されているため、
圧力設定信号７が他の機器（例えば、ＣＰすなと）から
の場合、誤差発生要因のあるＤ／Ａ変換器を設（６しな
（プればならないという問題点がある。In addition, since the entire control system is analog signal processed,
If the pressure setting signal 7 is from another device (for example, a CP port), there is a problem in that a D/A converter that may cause errors must be installed.
本発明は、上述した従来の基準圧力発生装置の信号処理
が有する問題点を解消し、圧力を入力とする各種工業泪
器の校正をにり高精度化することができる基準圧力弁Ｉ
Ｊ：装置を提供することを目的とする。The present invention provides a reference pressure valve I that solves the problems associated with the signal processing of the conventional reference pressure generator described above, and can improve the accuracy of the calibration of various industrial pressure devices that input pressure.
J: The purpose is to provide equipment.
（問題点を解決するための手段）
上）ｌｉ、シた問題点を解決するため本発明は、圧力を
制御するサーボ弁と、このサーボ弁を経て制御された圧
力を検出し−Ｃ電気信号に変換りる発生圧検出器と、こ
の発生圧検出器からの検出値と設定値とを比較する比較
増幅器とを備えた圧力発生装置において、上記発生圧検
出器からの信号をデジタル演算部に取込むためのインタ
ーフェース回路と、このインターフゴース回路からの信
号て・ある発生圧力値と設定圧力（（Ｃ１どの比較演算
を行い、１〕−一ボ弁の制御信号を発生り−るデジタル
演算回路と、このデジタル演算回路からの制御信号を−
１−記サーボ弁に入力するためのインターフェース回路
とを備えたことを特徴とづるものである。(Means for Solving the Problems) In order to solve the above problems, the present invention provides a servo valve for controlling pressure, and a method for detecting the controlled pressure through the servo valve and transmitting an electric signal. In a pressure generator equipped with a generated pressure detector that converts the generated pressure into An interface circuit for importing signals from this interface circuit, a certain generated pressure value, and a set pressure ((C1), which performs a comparison calculation and generates a control signal for the 1-stroke valve. And the control signal from this digital arithmetic circuit is -
1- An interface circuit for inputting to the servo valve.
ｑ
＝ ４ −
（作 用）
本発明は前記手段により、圧力流体はり′−ボ弁を介し
て圧力制御がなされ、この制御後の圧力は発生圧検出器
にて検出され、この検出値はインターフ１−ス回路を介
しでデジタル演算回路に入力され、ここで設定圧力値と
デジタル演算により比較演算されて勺−ボ弁の制御信号
を発生し、さらにこの制御信号はインターフェース回路
により４ノーボ弁に伝達され、サーボ弁を適正開痕にコ
ントロールして高粘邸の圧力を発生させることができる
。q = 4 - (Function) In the present invention, the pressure is controlled by the above means via the pressure fluid beam valve, the pressure after this control is detected by the generated pressure detector, and this detected value is sent to the interface. It is input to the digital calculation circuit via the 1-speed circuit, where it is compared with the set pressure value by digital calculation to generate a control signal for the 4-way valve, and this control signal is further transmitted to the 4-way valve by the interface circuit. It is possible to control the servo valve to the proper opening and generate high viscosity pressure.
（実施例）
以下、本発明に係る圧力発生装置の実施例を第１図及び
第２図を参照して説明する。(Example) Hereinafter, an example of the pressure generating device according to the present invention will be described with reference to FIGS. 1 and 2.
第１図は、本発明の圧力発生装置の基本構成を示すブロ
ック図であり、本発明の圧力発生装置は、上記従来例と
同様に圧力流体を供給する供給圧力口１、流体の圧力調
整を行う１ノーボ弁２、υ１出口３、圧力を発生させる
発生圧力口４、発生圧力口にお（）る圧力を検出する発
生圧検出器５を備えて一
いる。FIG. 1 is a block diagram showing the basic configuration of the pressure generating device of the present invention, and the pressure generating device of the present invention has a supply pressure port 1 for supplying pressure fluid, and a pressure adjustment port for the fluid, as in the conventional example. It is equipped with a 1-novo valve 2, a υ1 outlet 3, a pressure generation port 4 for generating pressure, and a pressure generation detector 5 for detecting the pressure at the pressure generation port.
本発明は、従来例と同様な上記構成に加え以下のような
構成が備えられている。In addition to the above configuration similar to the conventional example, the present invention includes the following configuration.
すなわち、発生圧検出器５の検出値は増幅器５ａを介し
てＡ／Ｄインターノｔ−ス８に人力され、ここでアブ１
」グ信号がデジタル信号に変換されてＣＩ） Ｕ演算部
９に入力され、そしてＣＰＵ演算部９にて、ＧＰ−ＩＢ
インターフ、［−ス１０より入力され（きたデジタル信
号による圧力設定信号と、上記インターフエース８より
の発生圧検出値信号とがデジタル演等により比較演Ｑが
なされ、この演算結果をＤ／Δインターフ−■−ス１１
に入力し、ここでデジタル信号をアリログ（ｌ−ｉ号に
変換し増幅器１１ａを介してサーボ弁２に人力しり一ボ
弁２をコントロールしで設定した圧力と発生発力［１４
に４３ける圧力とを等しり４ｆるように制御系全体を制
御する。That is, the detected value of the generated pressure detector 5 is inputted to the A/D internoce 8 via the amplifier 5a, where it is input to the A/D interface 8.
The GP-IB signal is converted into a digital signal and input to the CI) U calculation unit 9, and then the GP-IB signal is input to the CPU calculation unit 9.
The pressure setting signal inputted from the interface 10 and the generated pressure detection value signal from the interface 8 are compared by digital calculation, etc., and the result of this calculation is sent to the D/Δ interface. -■-S11
Here, the digital signal is converted to an arithmetic signal (l-i), and the pressure and generated force [14
The entire control system is controlled so that the pressure at 43 is equal to 4f.
上記ＣＰＵ演算部９には、発生圧検出（「１５の信号の
１線性を予じめ記憶さμてあり、このＣＰＵ演算部９に
て直線Ｖ［の補正を行う。The CPU calculation section 9 stores in advance the unilinearity of the generated pressure detection (15 signals), and the CPU calculation section 9 corrects the straight line V.
また、符号１２は発生圧検出器５の周囲渦電を測定する
ための温度検出器であり、この温度検出器１２の検出（
「１は増幅器１２ａを介して△／ＤインターフＬ−ス８
に入力されてここでデジタル信号に変換されてＣＰＵ演
算部９に入力される。−方、ＣＰＵ演算部９には発生圧
検出器５の渦電特性を予じめ記憶さけてあり、このＣＰ
口演算部９にて温度特性の補正を行う。また、ＣＰ口演
算部９は、サーボ弁２、発生圧検出器５、Δ／Ｄインタ
ーフェース８、ＣＰＵ演算部９、Ｄ／△インターフェー
ス１１、サーボ弁２のサーボループのループ利得の補正
が行えるようになっている。Further, reference numeral 12 is a temperature detector for measuring the surrounding eddy current of the generated pressure detector 5, and the detection of this temperature detector 12 (
"1 is connected to the Δ/D interface L-8 through the amplifier 12a.
The signal is input to the CPU processing unit 9, where it is converted into a digital signal and input to the CPU calculation unit 9. - On the other hand, the eddy electric characteristics of the generated pressure detector 5 are stored in advance in the CPU calculation section 9, and the CPU
The mouth calculation unit 9 corrects the temperature characteristics. Further, the CP port calculation unit 9 is configured to correct the loop gain of the servo valve 2, the generated pressure detector 5, the Δ/D interface 8, the CPU calculation unit 9, the D/Δ interface 11, and the servo loop of the servo valve 2. It has become.
しかして、温度補正、直線性補正、ループ利得の補正等
の各種補正がなされた極わめて正確な発生圧力口４にお
りる発生圧力と、設定圧力とがＣＰＵ演算部９にてデジ
タル演算により比較演算されるため、高精度な演算が可
能になる。Therefore, the very accurate generated pressure that reaches the generated pressure port 4, which has been subjected to various corrections such as temperature correction, linearity correction, loop gain correction, etc., and the set pressure are digitally calculated by the CPU calculation unit 9. Since the comparison calculation is performed by , highly accurate calculation is possible.
また、発生圧力口４に校正を行なう工業計器を接続し、
そして工業計器の出力信号を凡用信号入力端子１３に接
続すれば、この入力端子１３にリＡ／Ｄインターフェー
ス８を介してＣＰＵ演算部９に入力し、ざらにＣＰｕ演
算部９Ｊ：すＧＰ−ｆＢインターフＪ−−ス１０より外
部に取り出し、工業８１器の出力ヂ■ツクが可能となる
。ざらに、発生圧力口４に別途用意した標卑−圧力検出
器を接続し、ぞの出力信号を凡用信号入力端子１３に接
続することにより、上述と同様にＧＰ−［Ｂインターフ
Ｊ−ス１０より外部に取り出しで処理することができ、
内臓の発生圧検出器５の校正が可能となる。In addition, an industrial meter for calibration is connected to the generated pressure port 4,
Then, if the output signal of the industrial instrument is connected to the general purpose signal input terminal 13, it is inputted to the input terminal 13 via the A/D interface 8 to the CPU calculation unit 9, and then the output signal is input to the CPU calculation unit 9. It can be taken out from the fB interface 10 and output from 81 industrial devices. Roughly, by connecting a separately prepared pressure detector to the generated pressure port 4 and connecting its output signal to the general-purpose signal input terminal 13, the GP-[B interface 10, it can be taken out and processed outside.
The built-in generated pressure detector 5 can be calibrated.
次に、第２図の圧力発生制御のフローチャートを参照し
て圧力弁」装置の処理手順を説明する。Next, the processing procedure of the pressure valve device will be explained with reference to the flowchart of pressure generation control shown in FIG.
まず、ステップ■にて圧力設定を行い、この設定値と、
圧力検出（ステップ■）及び圧力舶補正（ステップ■）
を経た圧力検出値とが比較されて（ステップ■）、圧力
設定値の方が圧力検出（１ｒ１より大ぎければサーボ弁
を閉じ（ステップ■）、逆に小ざければサーボ弁をｌｔ
ｌける（ステップ■）。First, set the pressure in step ■, and use this setting value and
Pressure detection (step ■) and pressure vessel correction (step ■)
The detected pressure value is compared with the detected pressure value (step ■), and if the pressure set value is greater than the pressure detected (1r1), the servo valve is closed (step ■), and if it is smaller, the servo valve is closed (step ■).
Let go (step ■).
そして、ステップ■又はステップ■を杼て発つ１−シた
圧力（ステップ■）は、再麻ステップ■の圧力検出に戻
される。Then, the pressure (step ■) originating from step (2) or step (2) is returned to the pressure detection in the reheming step (2).
（発明の効果）
以上、実施例の説明から明らかなにうに、本発明ににれ
ば、各信号処理をデジタル演算処理ににつで行ったため
、圧力設定及び演算に多倍精磨演算を使用することによ
り、分解能が高くなるとともにランダムなノイズの影響
も減り高精度な演算が可能になり高精度の圧力を発生さ
ぼることができる。そして、アナログ演算では難かしい
温爪補正や直線性補正等の複雑な演算が可能になり、正
確な演算が行え、これにより高精度の圧力を発生させる
ことができる。(Effects of the Invention) As is clear from the description of the embodiments, according to the present invention, since each signal processing is performed by digital calculation processing, multi-polishing calculation is used for pressure setting and calculation. By doing so, the resolution is increased and the influence of random noise is reduced, making it possible to perform highly accurate calculations and generate highly accurate pressure. In addition, complex calculations such as warm nail correction and linearity correction, which are difficult to perform with analog calculations, are possible, and accurate calculations can be performed, thereby allowing highly accurate pressure to be generated.
第１図は本発明に係る圧力発生装置の実施例を示すブロ
ック図、第２図は同装回にお【プる圧力発生制御のフロ
ーヂト−１〜、第３図【よ従来の圧力発生装置のブロッ
ク図である。
１・・・供給圧力口、２・・・サーボ弁、３・・・排出
口、４・・・発生圧力口、５・・・発生圧検出器、８・
・・Ａ／Ｄインターフェース、９・・・ＣＰＵ演算部、
１０・・・ＧＰ−ＩＢインターフェース、１１・・・Ｄ
／Ａインターフェース、１２・・・渇仰検出器、１３・
・・凡用信号入力端子。
出願人代理人 Ｆｉ 藤 −雄手続補正書坊式
）
昭和６２年２月４日Fig. 1 is a block diagram showing an embodiment of the pressure generation device according to the present invention, Fig. 2 is a flowchart of pressure generation control in the same mounting circuit, and Fig. 3 is a block diagram showing an embodiment of the pressure generation device according to the present invention. FIG. DESCRIPTION OF SYMBOLS 1... Supply pressure port, 2... Servo valve, 3... Discharge port, 4... Generated pressure port, 5... Generated pressure detector, 8...
...A/D interface, 9...CPU calculation unit,
10...GP-IB interface, 11...D
/A interface, 12... thirst detector, 13.
・General purpose signal input terminal. Applicant's agent Fi Fuji - Male procedure amendment form) February 4, 1986
Claims (1)
れた圧力を検出して電気信号に変換する発生圧検出器と
、この発生圧検出器からの検出値と設定値とを比較する
比較増幅器とを備えた圧力発生装置において、上記発生
圧検出器からの信号をデジタル演算部に取込むためのイ
ンターフェース回路と、このインターフェース回路から
の信号である発生圧力値と設定圧力値との比較演算を行
い、サーボ弁の制御信号を発生するデジタル演算回路と
、このデジタル演算回路からの制御信号を上記サーボ弁
に入力するためのインターフェース回路とを備えたこと
を特徴とする圧力発生装置。A servo valve that controls pressure, a generated pressure detector that detects the pressure controlled via this servo valve and converts it into an electrical signal, and a comparison amplifier that compares the detected value from this generated pressure detector with a set value. An interface circuit for inputting a signal from the generated pressure detector into a digital calculation section, and a comparison calculation between the generated pressure value, which is the signal from this interface circuit, and a set pressure value. 1. A pressure generating device comprising: a digital arithmetic circuit for generating a control signal for a servo valve; and an interface circuit for inputting a control signal from the digital arithmetic circuit to the servo valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23253886A JPS6385418A (en) | 1986-09-30 | 1986-09-30 | Pressure generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23253886A JPS6385418A (en) | 1986-09-30 | 1986-09-30 | Pressure generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6385418A true JPS6385418A (en) | 1988-04-15 |
Family
ID=16940896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23253886A Pending JPS6385418A (en) | 1986-09-30 | 1986-09-30 | Pressure generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6385418A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0238832A (en) * | 1988-07-28 | 1990-02-08 | Yamatake Honeywell Co Ltd | Difference pressure transmitter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5641232B2 (en) * | 1972-05-22 | 1981-09-26 |
-
1986
- 1986-09-30 JP JP23253886A patent/JPS6385418A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5641232B2 (en) * | 1972-05-22 | 1981-09-26 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0238832A (en) * | 1988-07-28 | 1990-02-08 | Yamatake Honeywell Co Ltd | Difference pressure transmitter |
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