JPS649509A - Method and device for controlling load part pressure - Google Patents
Method and device for controlling load part pressureInfo
- Publication number
- JPS649509A JPS649509A JP16407387A JP16407387A JPS649509A JP S649509 A JPS649509 A JP S649509A JP 16407387 A JP16407387 A JP 16407387A JP 16407387 A JP16407387 A JP 16407387A JP S649509 A JPS649509 A JP S649509A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- tank
- fluid
- controller
- load part
- 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
- Control Of Fluid Pressure (AREA)
Abstract
PURPOSE:To simply and effectively change the pressure of a load part and to constantly hold the load part to the pressure by using the pressure lower by a predetermined designated pressure difference than the designated pressure as a switching point, supplying a fluid when the pressure is below, using the pressure higher by an exhaust pressure difference as the switching point, and exhausting the fluid when the pressure is above to supply and exhaust and switch the fluid. CONSTITUTION:A controller 6 is connected to a power source to input a detecting signal from a pressure detector 7 for detecting the pressure of a tank 3 and input an electric signal for commanding the set pressure of the tank 3 from an external controller or the like 8 as an external command. In the controller 6, the set pressure according to the external command is compared with the detecting signal from the pressure detector and operated and an electromagnetic valve control signal is outputted. When the pressure in the tank 3 is lower than the set pressure according to the external command, the fluid is supplied to the tank 3 and when it is higher than the set pressure, the fluid of the tank 3 is exhausted by switching and controlling change over valves 4, 5. Thereby, the pressure change of the load can be rapidly switched to the command pressure and it can be held to a constant pressure with high accuracy.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16407387A JPS649509A (en) | 1987-07-02 | 1987-07-02 | Method and device for controlling load part pressure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16407387A JPS649509A (en) | 1987-07-02 | 1987-07-02 | Method and device for controlling load part pressure |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS649509A true JPS649509A (en) | 1989-01-12 |
Family
ID=15786266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16407387A Pending JPS649509A (en) | 1987-07-02 | 1987-07-02 | Method and device for controlling load part pressure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS649509A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012014607A1 (en) | 2010-07-24 | 2012-02-02 | コニカミノルタホールディングス株式会社 | Near-infrared reflecting film and near-infrared reflecting body provided with same |
-
1987
- 1987-07-02 JP JP16407387A patent/JPS649509A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012014607A1 (en) | 2010-07-24 | 2012-02-02 | コニカミノルタホールディングス株式会社 | Near-infrared reflecting film and near-infrared reflecting body provided with same |
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