JPS57103913A - Servo valve - Google Patents
Servo valveInfo
- Publication number
- JPS57103913A JPS57103913A JP17888980A JP17888980A JPS57103913A JP S57103913 A JPS57103913 A JP S57103913A JP 17888980 A JP17888980 A JP 17888980A JP 17888980 A JP17888980 A JP 17888980A JP S57103913 A JPS57103913 A JP S57103913A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- pilot
- spool
- main valve
- flowing amount
- 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
Abstract
PURPOSE: To stabilize operation by a method wherein a ratio between output flowing amount of pilot valve and action area on the edge of a main valve spool of the main valve is determined as a specific value in the two stage amplification type servo valve to control the main valve by pilot valve.
CONSTITUTION: When electric current is applied through a voice coil 11 in accordance with a scale of input signal 15, a spool 10 of pilot valve is displaced by cooperative operation with a magnet 12, and flowing amount (q) of the pressed oil by pilot operation is adjusted by a pilot valve 8 in accordance with its displacement. A spool 6 is displaced to generate output flowing amount Q by a mechanism wherein the flowing amount (q) runs into the operation chamber 7 on both ends of main valve spool of a main valve 3 and acts on the action surface 6b. In the servo valve, the ratio (q/A) between the above described flowing amount (q) of the pressure oil of pilot operation and action area A of the action surface 6b of the main valve spool 6 should be arranged to become less than 3. Thus, stabilization of servo valve may be planned.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17888980A JPS57103913A (en) | 1980-12-19 | 1980-12-19 | Servo valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17888980A JPS57103913A (en) | 1980-12-19 | 1980-12-19 | Servo valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57103913A true JPS57103913A (en) | 1982-06-28 |
Family
ID=16056463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17888980A Pending JPS57103913A (en) | 1980-12-19 | 1980-12-19 | Servo valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57103913A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60167272U (en) * | 1984-04-12 | 1985-11-06 | 三菱重工業株式会社 | Direct acting servo valve |
| JPS60167205U (en) * | 1984-04-12 | 1985-11-06 | 三菱重工業株式会社 | Direct-acting servo valve servo circuit |
| US5018431A (en) * | 1988-12-09 | 1991-05-28 | Quadrastat Corporation | Apparatus for positioning a work implement |
| US5586435A (en) * | 1993-07-20 | 1996-12-24 | Servo Kinetics | Hydraulic closed loop control system |
-
1980
- 1980-12-19 JP JP17888980A patent/JPS57103913A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60167272U (en) * | 1984-04-12 | 1985-11-06 | 三菱重工業株式会社 | Direct acting servo valve |
| JPS60167205U (en) * | 1984-04-12 | 1985-11-06 | 三菱重工業株式会社 | Direct-acting servo valve servo circuit |
| US5018431A (en) * | 1988-12-09 | 1991-05-28 | Quadrastat Corporation | Apparatus for positioning a work implement |
| US5586435A (en) * | 1993-07-20 | 1996-12-24 | Servo Kinetics | Hydraulic closed loop control system |
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