JPS56143802A - Electric-oil pressure servo controller - Google Patents
Electric-oil pressure servo controllerInfo
- Publication number
- JPS56143802A JPS56143802A JP4557580A JP4557580A JPS56143802A JP S56143802 A JPS56143802 A JP S56143802A JP 4557580 A JP4557580 A JP 4557580A JP 4557580 A JP4557580 A JP 4557580A JP S56143802 A JPS56143802 A JP S56143802A
- Authority
- JP
- Japan
- Prior art keywords
- servo
- signal
- oil pressure
- adder
- switch
- 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
Landscapes
- Servomotors (AREA)
Abstract
PURPOSE: To obtain a smooth selection of number of servo valves by changing continuously a control deviation signal to the servo valves at the selective switching of a plurality of servo valves.
CONSTITUTION: In the control loop of the electric-oil pressure servo controller which controls an actuator by selectively operating a limited number of servo valves among the plurality of servo valves, there are provided loop gain units 18 and 19, which are connected to a servo amplifier 13 through a loop gain switch 21. Between the servo amplifier 13 and an adder 12 is provided a servo valve switch 28. These switches 21 and 28 are operated by a turn-over means 29. In operation, an input signal from an input circuit 1 is compared with a feedback signal by another adder 20 which provides a comparison result as a deviation signal. The deviation signal thus outputted from the adder 20 is adjusted by the loop gain unit 18 and/or 19 so as to select either one of the signals by the switch 21. The selected signal is amplified by the amplifier 13. Then one of the signals passing through the adder 11 and a booster amplifier 5, reaching the servo valve 3, where the signal in the electric form is converted into the oil pressure for amplification while, the resulting oil pressure is applied to the actuator for driving the same. The other signal selects whether the servo valve 4 is used through the switch 28, while the selected result is transmitted to the servo valve 4.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4557580A JPS56143802A (en) | 1980-04-09 | 1980-04-09 | Electric-oil pressure servo controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4557580A JPS56143802A (en) | 1980-04-09 | 1980-04-09 | Electric-oil pressure servo controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56143802A true JPS56143802A (en) | 1981-11-09 |
| JPS6140841B2 JPS6140841B2 (en) | 1986-09-11 |
Family
ID=12723140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4557580A Granted JPS56143802A (en) | 1980-04-09 | 1980-04-09 | Electric-oil pressure servo controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56143802A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63187703U (en) * | 1987-05-26 | 1988-12-01 | ||
| US5031506A (en) * | 1987-09-24 | 1991-07-16 | Siemens Aktiengesellschaft | Device for controlling the position of a hydraulic feed drive, such as a hydraulic press or punch press |
| US5218895A (en) * | 1990-06-15 | 1993-06-15 | Caterpillar Inc. | Electrohydraulic control apparatus and method |
-
1980
- 1980-04-09 JP JP4557580A patent/JPS56143802A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63187703U (en) * | 1987-05-26 | 1988-12-01 | ||
| JPH0442561Y2 (en) * | 1987-05-26 | 1992-10-08 | ||
| US5031506A (en) * | 1987-09-24 | 1991-07-16 | Siemens Aktiengesellschaft | Device for controlling the position of a hydraulic feed drive, such as a hydraulic press or punch press |
| US5218895A (en) * | 1990-06-15 | 1993-06-15 | Caterpillar Inc. | Electrohydraulic control apparatus and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6140841B2 (en) | 1986-09-11 |
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