JPS6333003U - - Google Patents
Info
- Publication number
- JPS6333003U JPS6333003U JP12682886U JP12682886U JPS6333003U JP S6333003 U JPS6333003 U JP S6333003U JP 12682886 U JP12682886 U JP 12682886U JP 12682886 U JP12682886 U JP 12682886U JP S6333003 U JPS6333003 U JP S6333003U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- displacement
- electrical signal
- input
- stem
- 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
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 7
Landscapes
- Servomotors (AREA)
Description
第１図は本考案の一実施例を示す構成図、第２
図はその主要部の特性を示す特性図、第３図は第
１図の要部構成説明図、第４図は第１図に示す構
成のブロツク線図、第５図は本考案の第２の実施
例を示す構成図、第６図は本考案の第３の実施例
を示す構成図、第７図は従来の電空ポジシヨナの
構成を示す構成図である。
１，１′……入力端子、２……トルクモータ、
３……レバー、６……ノズル、８……パイロツト
リレー、９……ダイヤフラムバルブ、１６……入
力処理手段、１７……差動増幅器、１８……アク
チユエータ、１９，１９′，２１……変位―電気
信号変換器、２２……耐圧防爆容器、３０……マ
イクロコンピユータ。
Fig. 1 is a configuration diagram showing one embodiment of the present invention;
Figure 3 is a characteristic diagram showing the characteristics of the main parts, Figure 3 is an explanatory diagram of the configuration of the main parts of Figure 1, Figure 4 is a block diagram of the configuration shown in Figure 1, Figure 5 is the second diagram of the present invention. FIG. 6 is a block diagram showing a third embodiment of the present invention, and FIG. 7 is a block diagram showing the structure of a conventional electro-pneumatic positioner. 1, 1'...Input terminal, 2...Torque motor,
3... Lever, 6... Nozzle, 8... Pilot relay, 9... Diaphragm valve, 16... Input processing means, 17... Differential amplifier, 18... Actuator, 19, 19', 21... Displacement - Electrical signal converter, 22... Flameproof explosion-proof container, 30... Microcomputer.
Claims (1)
電流に対応させて制御するための電空ポジシヨナ
において、前記入力電流を電圧信号あるいはデジ
タル信号に変換する入力処理手段と、この入力処
理手段の出力とフイードバツク信号との差に基づ
いて前記バルブを駆動するパイロツトリレーのフ
ラツパを制御するアクチユエータ手段と、前記パ
イロツトリレーの弁に連動するステム変位を非接
触磁気センサにより電気信号に変換して前記アク
チユエータ手段の入力側にフイードバツクする第
１変位／電気信号変換手段と、前記バルブのステ
ム変位を入力して電圧信号あるいはデジタル信号
の形として前記フイードバツク信号を得る第２変
位／電気信号変換手段と、前記入力処理手段と前
記アクチユエータ手段と第１変位／電気信号変換
手段と前記第２変位／電気信号変換手段とを内蔵
する耐圧防爆容器とを具備した耐圧防爆形電空ポ
ジシヨナ。 An electro-pneumatic positioner for controlling the stem position of a valve driven by pneumatic pressure in response to an input current includes an input processing means for converting the input current into a voltage signal or a digital signal, and an output and feedback of the input processing means. actuator means for controlling a flapper of a pilot relay that drives the valve based on the difference between the valve and the valve; and a stem displacement that is linked to the valve of the pilot relay is converted into an electrical signal by a non-contact magnetic sensor, which is input to the actuator means. a first displacement/electrical signal converting means for feeding back to the valve, a second displacement/electrical signal converting means for inputting the stem displacement of the valve to obtain the feedback signal in the form of a voltage signal or a digital signal, and the input processing means. and a pressure-resistant explosion-proof container containing the actuator means, the first displacement/electrical signal converting means, and the second displacement/electrical signal converting means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986126828U JPH0433445Y2 (en) | 1986-08-20 | 1986-08-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986126828U JPH0433445Y2 (en) | 1986-08-20 | 1986-08-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6333003U true JPS6333003U (en) | 1988-03-03 |
| JPH0433445Y2 JPH0433445Y2 (en) | 1992-08-11 |
Family
ID=31021006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986126828U Expired JPH0433445Y2 (en) | 1986-08-20 | 1986-08-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0433445Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03288074A (en) * | 1990-04-03 | 1991-12-18 | Kubota Corp | Reciprocating device using trapezoidal screw |
| JP2004523016A (en) * | 2000-06-09 | 2004-07-29 | フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー | Plug and seat positioning system applied to control |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5927441A (en) * | 1982-08-05 | 1984-02-13 | Mitsubishi Electric Corp | Discharge lamp apparatus |
| JPS59138922A (en) * | 1983-01-29 | 1984-08-09 | Shimadzu Corp | Electropneumatic converter |
-
1986
- 1986-08-20 JP JP1986126828U patent/JPH0433445Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5927441A (en) * | 1982-08-05 | 1984-02-13 | Mitsubishi Electric Corp | Discharge lamp apparatus |
| JPS59138922A (en) * | 1983-01-29 | 1984-08-09 | Shimadzu Corp | Electropneumatic converter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03288074A (en) * | 1990-04-03 | 1991-12-18 | Kubota Corp | Reciprocating device using trapezoidal screw |
| JP2004523016A (en) * | 2000-06-09 | 2004-07-29 | フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー | Plug and seat positioning system applied to control |
| JP4694767B2 (en) * | 2000-06-09 | 2011-06-08 | フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー | Plug and seat positioning system applied to control |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0433445Y2 (en) | 1992-08-11 |