JPS6438523U - - Google Patents
Info
- Publication number
- JPS6438523U JPS6438523U JP13262687U JP13262687U JPS6438523U JP S6438523 U JPS6438523 U JP S6438523U JP 13262687 U JP13262687 U JP 13262687U JP 13262687 U JP13262687 U JP 13262687U JP S6438523 U JPS6438523 U JP S6438523U
- Authority
- JP
- Japan
- Prior art keywords
- feedback
- output
- displacement
- stem
- converting
- 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
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000003321 amplification Effects 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 claims 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
第１図は本考案の１実施例を示すブロツク図、
第２図は従来の電空ポジシヨナの構成を示すブロ
ツク図、第３図は第２図に示すバルブと変位／電
気信号変換器とを結合するリンク機構を説明する
射視図、第４図は正動作の場合の第３図に示すリ
ンク機構の動作を説明する説明図、第５図は逆動
作の場合の第３図に示すリンク機構の問題点を説
明する説明図である。
１２……入力処理手段、１３……差動増幅器、
１４……パイロツトリレー、２０……バルブ、２
０１……バルブステム、２１……変位／電気信号
変換器、２１６……バネ、２２……フイードバツ
クレバー、２３……軸受、２４……フイードバツ
ク軸、２６，２７……リンク、２８……正／逆切
替回路。
FIG. 1 is a block diagram showing one embodiment of the present invention.
Fig. 2 is a block diagram showing the configuration of a conventional electro-pneumatic positioner, Fig. 3 is a perspective view illustrating the link mechanism that connects the valve shown in Fig. 2 and the displacement/electrical signal converter, and Fig. 4 is a perspective view showing the structure of the conventional electro-pneumatic positioner. FIG. 5 is an explanatory diagram for explaining the operation of the link mechanism shown in FIG. 3 in the case of normal operation, and FIG. 5 is an explanatory diagram for explaining the problem of the link mechanism shown in FIG. 3 in the case of reverse operation. 12...Input processing means, 13...Differential amplifier,
14...Pilot relay, 20...Valve, 2
01... Valve stem, 21... Displacement/electric signal converter, 216... Spring, 22... Feedback lever, 23... Bearing, 24... Feedback shaft, 26, 27... Link, 28... Forward/reverse switching circuit.
Claims (1)
る差動増幅手段と、この差動増幅手段の出力を空
気圧に変換する空気圧変換手段と、この空気圧変
換手段の出力が供給されこの出力に対応してステ
ムが直線変位するバルブと、このステムに一端が
係合し前記直線変位を回転変位に変換するフイー
ドバツクレバーと、このフイードバツクレバーの
他端にこれとは直角に軸受を通して回動可能なよ
うに延長されたフイードバツク軸と、このフイー
ドバツク軸から前記フイードバツクレバーと同じ
方向に延長されたリンクと、このリンクから前記
ステムと同じ方向に配置されたスプリングと、こ
のスプリングの一端の変位を電気信号に変換する
変位／電気信号変換手段と、この変位／電気信号
変換手段の出力が入力されこの入力を直接に或い
は所定の電圧から減算して正動作と逆動作を切り
替える正／逆切替手段と、この正／逆切替手段の
出力を前記帰還信号として前記差動増幅手段に帰
還することを特徴とする電空ポジシヨナ。 differential amplification means for outputting the difference between the input current and the feedback signal within a predetermined range; pneumatic pressure conversion means for converting the output of the differential amplification means into pneumatic pressure; and the output of the pneumatic pressure conversion means is supplied and corresponds to this output. a valve whose stem is linearly displaced; a feedback lever that engages the stem at one end and converts the linear displacement into rotational displacement; a movably extended feedback shaft; a link extending from the feedback shaft in the same direction as the feedback lever; a spring disposed from the link in the same direction as the stem; and one end of the spring. displacement/electrical signal converting means for converting the displacement of An electro-pneumatic positioner comprising a reverse switching means and an output of the forward/reverse switching means being fed back to the differential amplifying means as the feedback signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13262687U JPS6438523U (en) | 1987-08-31 | 1987-08-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13262687U JPS6438523U (en) | 1987-08-31 | 1987-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6438523U true JPS6438523U (en) | 1989-03-08 |
Family
ID=31389762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13262687U Pending JPS6438523U (en) | 1987-08-31 | 1987-08-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6438523U (en) |
-
1987
- 1987-08-31 JP JP13262687U patent/JPS6438523U/ja active Pending