JPS5694005A - Speed comtrol device for fluid pressure cylinder in fluid pressure system - Google Patents
Speed comtrol device for fluid pressure cylinder in fluid pressure systemInfo
- Publication number
- JPS5694005A JPS5694005A JP17139779A JP17139779A JPS5694005A JP S5694005 A JPS5694005 A JP S5694005A JP 17139779 A JP17139779 A JP 17139779A JP 17139779 A JP17139779 A JP 17139779A JP S5694005 A JPS5694005 A JP S5694005A
- Authority
- JP
- Japan
- Prior art keywords
- fluid pressure
- control
- speed
- fluid
- speed command
- 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
- Fluid-Pressure Circuits (AREA)
Abstract
PURPOSE: To improve the quick response and the stability of a speed control system in a fluid pressure system, by arranging two electromagnetic proportional control valves, one for rough control of fluid quantity with an open loop control and the other for fine control with a closed loop control.
CONSTITUTION: The second controlling unit 9 which amplifies a speed command signal and forms an open loop together with the second power amplifier 10 and the large capacitive second electromagnetic proportional controlling valve 11 which supplies a fluid quantity to a fluid pressure cylinder 6 to in proportion the output of the controlling unit 9, are provided. When a speed command signal is sent from a speed command device 1, the speed command signal amplified by the operations of the second controlling unit 9 and the second power amplifier 10, is inputted into the controlling valve 11, and then, the bulk of the fluid quantity proportional to the input amount is supplied to a fluid pressure cylinder 6 from the controlling valve 11. Thereby, as the quantity of fluid controlled by a closed loop consisting of first electromagnetic controlling valve 5 of small capacity and the like lessens remarkably, the accuracy and the stability of speed control is improved.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17139779A JPS5694005A (en) | 1979-12-27 | 1979-12-27 | Speed comtrol device for fluid pressure cylinder in fluid pressure system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17139779A JPS5694005A (en) | 1979-12-27 | 1979-12-27 | Speed comtrol device for fluid pressure cylinder in fluid pressure system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5694005A true JPS5694005A (en) | 1981-07-30 |
Family
ID=15922392
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17139779A Pending JPS5694005A (en) | 1979-12-27 | 1979-12-27 | Speed comtrol device for fluid pressure cylinder in fluid pressure system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5694005A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58102805A (en) * | 1981-12-10 | 1983-06-18 | Toshiba Mach Co Ltd | Closed loop speed control circuit for oil pressure actuator |
JPS5937302A (en) * | 1982-08-26 | 1984-02-29 | Ube Ind Ltd | Speed control method of cylinder in hydraulic system |
JPS59103003A (en) * | 1982-11-22 | 1984-06-14 | ロ−ド・コ−ポレ−シヨン | Hydraulic-pneumatic type drive |
JPS608502A (en) * | 1983-06-29 | 1985-01-17 | Amada Metoretsukusu:Kk | Hydraulic cylinder and cylinder control method |
JPS6034501A (en) * | 1983-08-03 | 1985-02-22 | Shoketsu Kinzoku Kogyo Co Ltd | Controlling method and device for hydraulic pressure actuator |
JPS6388305A (en) * | 1986-09-30 | 1988-04-19 | Sumitomo Kenki Kk | Speed controller for hydraulic rotary member |
JPH02120019A (en) * | 1988-10-29 | 1990-05-08 | Nissei Plastics Ind Co | Control method of injection molding machine and device |
-
1979
- 1979-12-27 JP JP17139779A patent/JPS5694005A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58102805A (en) * | 1981-12-10 | 1983-06-18 | Toshiba Mach Co Ltd | Closed loop speed control circuit for oil pressure actuator |
JPS5937302A (en) * | 1982-08-26 | 1984-02-29 | Ube Ind Ltd | Speed control method of cylinder in hydraulic system |
JPH0241645B2 (en) * | 1982-08-26 | 1990-09-18 | ||
JPS59103003A (en) * | 1982-11-22 | 1984-06-14 | ロ−ド・コ−ポレ−シヨン | Hydraulic-pneumatic type drive |
JPS608502A (en) * | 1983-06-29 | 1985-01-17 | Amada Metoretsukusu:Kk | Hydraulic cylinder and cylinder control method |
JPS6034501A (en) * | 1983-08-03 | 1985-02-22 | Shoketsu Kinzoku Kogyo Co Ltd | Controlling method and device for hydraulic pressure actuator |
JPH0346681B2 (en) * | 1983-08-03 | 1991-07-17 | Smc Corp | |
JPS6388305A (en) * | 1986-09-30 | 1988-04-19 | Sumitomo Kenki Kk | Speed controller for hydraulic rotary member |
JPH02120019A (en) * | 1988-10-29 | 1990-05-08 | Nissei Plastics Ind Co | Control method of injection molding machine and device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5694005A (en) | Speed comtrol device for fluid pressure cylinder in fluid pressure system | |
JPS56138437A (en) | Air-fuel ratio controller | |
JPS5341681A (en) | Liquid pressure controlling system | |
JPS5393526A (en) | Apparatus for controlling clutch of automobiles | |
JPS53104005A (en) | Co-operating pressure varying operation system for boiler-turbine | |
JPS55135729A (en) | Pressure endurance running machine of electrohydraulic servo type | |
JPS5616209A (en) | Releaf valve of electromagnetic proportional type | |
JPS55164464A (en) | Profile grinding controlling method | |
JPS52119794A (en) | Servo mechanism | |
JPS5694006A (en) | Speed control device for fluid pressure cylinder in fluid pressure system | |
JPS5524282A (en) | Fluid control unit | |
GB901226A (en) | Improvements in fluid flow controllers | |
JPS5762406A (en) | Process control system | |
JPS5593906A (en) | Controller for turbine regulating valve in pressure change operation | |
JPS54124174A (en) | Control synchronized independent type instrument controller | |
FR2427233A1 (en) | Load controlled brake valve system - incorporates relay valve in series with control valve | |
JPS5520951A (en) | Device for operation of hydraulically operated valve | |
JPS5510171A (en) | Hydraulic pressure controlling system for hydraulically operated apparatus | |
JPS5467955A (en) | Horizontal retraction type crane | |
JPS52113444A (en) | Speed regulator for hydraulic turbine | |
JPS545248A (en) | Control valve for reversible refrigerator | |
JPS55112468A (en) | Proportional control valve | |
JPS549390A (en) | Oil pressure controller | |
JPS5642701A (en) | Fluid pressure amplifier system | |
GB1296058A (en) |