JPS5850204U - Electro-hydraulic servo valve abnormality detection device - Google Patents
Electro-hydraulic servo valve abnormality detection deviceInfo
- Publication number
- JPS5850204U JPS5850204U JP14234781U JP14234781U JPS5850204U JP S5850204 U JPS5850204 U JP S5850204U JP 14234781 U JP14234781 U JP 14234781U JP 14234781 U JP14234781 U JP 14234781U JP S5850204 U JPS5850204 U JP S5850204U
- Authority
- JP
- Japan
- Prior art keywords
- servo valve
- electro
- hydraulic servo
- actuator
- calculation result
- 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
Landscapes
- Indication Of The Valve Opening Or Closing Status (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案を位置サーボ系に適用する場合の実施例
を示すブロック図であり、第２図は異常検知装置の詳細
を示すブロック図である。
１・・・・・・アクチェータ、２・・・・・・電気油圧
サーボ弁、３・・・・・・油圧源、４・・・・・・位置
検出器、５・・・・・・位置制御装置、・・・・・・圧
力検知器、７・・・・・・負荷、８・・・・・・異常検
知装置、９・・・・・・異常表示、１θ・・・・・・中
立点演算装置、１１・・・・・・流量演算装置、１２・
・・・・・位置演算装置、１３・・・・・・ゲイン異常
判定装置、１４・・・・・・中立点異常判定装置、１５
・・・・・・ゲイン異常表示、１６・・・・・・中立点
異常表示、Ｘｒ・・・・・・位置指令値、Ｘ・・・・・
・位置検出値、ｌ・・・・・・サーボ電流、Ｐ・・・・
・・負荷圧力、Ｐｓ・・・・・・供給圧力、Ｉｏ・・・
・・・中立点電流、Ｑ・・・・・・サーボ弁流量、Ｘｃ
・・・・・・位置計算値、Ｇ（ｓ）・・・・・・アクチ
ェータ伝達関数。FIG. 1 is a block diagram showing an embodiment in which the present invention is applied to a position servo system, and FIG. 2 is a block diagram showing details of an abnormality detection device. 1...actuator, 2...electro-hydraulic servo valve, 3...hydraulic source, 4...position detector, 5...position Control device,... Pressure detector, 7... Load, 8... Abnormality detection device, 9... Abnormality display, 1θ... Neutral point calculation device, 11...Flow rate calculation device, 12.
. . . Position calculation device, 13 . . . Gain abnormality determination device, 14 . . . Neutral point abnormality determination device, 15
...Gain error display, 16...Neutral point error display, Xr...Position command value, X...
・Position detection value, l... Servo current, P...
...Load pressure, Ps...Supply pressure, Io...
... Neutral point current, Q ... Servo valve flow rate, Xc
...Position calculation value, G(s)...Actuator transfer function.
Claims (1)
タの位置もしくはアクチェータに作用する荷重を制御す
るサーボ系において、サーボ弁の中立点位置を演算する
装置と、前記中立点位置の演算結果から電気油圧サーボ
弁の中立点位置の異常を判定する装置と、前記中立点位
置の演算結果および電気油圧サーボ弁の開度に相当する
信号および供給圧力および負荷圧力とから電気油圧サー
ボ弁の流量を演算する装置と、前記流量の演算結果とア
クチェータの伝達関数とからアクチェータの位置もしく
は荷重を演算する装置と、前記位置もしくは荷重の演算
結果と対応する検出値との関−係から電気油圧サーボ弁
のゲインの異常を判定する装置とを備にたことを特徴と
する電気油圧サーボ弁の異常検知装置。In a servo system that uses an electro-hydraulic servo valve and an actuator to control the position of the actuator or the load acting on the actuator, there is provided a device that calculates the neutral point position of the servo valve, and an electro-hydraulic servo valve based on the calculation result of the neutral point position. and a device that calculates the flow rate of the electro-hydraulic servo valve from the calculation result of the neutral point position, a signal corresponding to the opening degree of the electro-hydraulic servo valve, and supply pressure and load pressure. , a device that calculates the actuator position or load from the flow rate calculation result and the actuator transfer function, and an abnormality in the gain of the electrohydraulic servo valve from the relationship between the position or load calculation result and the corresponding detected value. An abnormality detection device for an electro-hydraulic servo valve, characterized in that it is equipped with a device for determining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14234781U JPS5850204U (en) | 1981-09-25 | 1981-09-25 | Electro-hydraulic servo valve abnormality detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14234781U JPS5850204U (en) | 1981-09-25 | 1981-09-25 | Electro-hydraulic servo valve abnormality detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5850204U true JPS5850204U (en) | 1983-04-05 |
Family
ID=29935382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14234781U Pending JPS5850204U (en) | 1981-09-25 | 1981-09-25 | Electro-hydraulic servo valve abnormality detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5850204U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6026802A (en) * | 1983-07-25 | 1985-02-09 | Ishikawajima Harima Heavy Ind Co Ltd | Troubleshooting method of servo valve |
| JPH0342117A (en) * | 1989-07-07 | 1991-02-22 | Ishikawajima Harima Heavy Ind Co Ltd | Device for monitoring trouble of servovalve |
| JP2013083354A (en) * | 2011-10-10 | 2013-05-09 | In-Lhc | Method of detecting failure of servo-valve, and servo-valve applying the method |
-
1981
- 1981-09-25 JP JP14234781U patent/JPS5850204U/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6026802A (en) * | 1983-07-25 | 1985-02-09 | Ishikawajima Harima Heavy Ind Co Ltd | Troubleshooting method of servo valve |
| JPH0342117A (en) * | 1989-07-07 | 1991-02-22 | Ishikawajima Harima Heavy Ind Co Ltd | Device for monitoring trouble of servovalve |
| JP2013083354A (en) * | 2011-10-10 | 2013-05-09 | In-Lhc | Method of detecting failure of servo-valve, and servo-valve applying the method |
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