JPS5635223A - Method and apparatus for control of pwm flow rate - Google Patents
Method and apparatus for control of pwm flow rateInfo
- Publication number
- JPS5635223A JPS5635223A JP10985579A JP10985579A JPS5635223A JP S5635223 A JPS5635223 A JP S5635223A JP 10985579 A JP10985579 A JP 10985579A JP 10985579 A JP10985579 A JP 10985579A JP S5635223 A JPS5635223 A JP S5635223A
- Authority
- JP
- Japan
- Prior art keywords
- electromagnetic valve
- control
- flow rate
- linearity
- spool
- 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
- Feedback Control In General (AREA)
- Flow Control (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
PURPOSE: To enhance the linearity of the control appratus, by flowing a large amount of driving current to the solenoid when the electromagnetic valve is on and thus securing a quick on-state for the electromagnetic valve.
CONSTITUTION: The on- and off controls are given alternately to the electromagnetic valve to give a control to the mean flow rate of the liquid. In this case, a large amount of driving current is flowed to the solenoid of the electromagnetic valve during a comparatively short time τON from the start point of the on-time tON of the electromagnetic valve. Thus the spool of the electromagnetic valve is turned on quickly. After this, a comparatively small amount of holding current is supplied to maintain the shift of the spool. Thus the time τON required for the on of the electromagnetic valve is reduced to reduce also the error of linearity.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10985579A JPS5635223A (en) | 1979-08-29 | 1979-08-29 | Method and apparatus for control of pwm flow rate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10985579A JPS5635223A (en) | 1979-08-29 | 1979-08-29 | Method and apparatus for control of pwm flow rate |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5635223A true JPS5635223A (en) | 1981-04-07 |
Family
ID=14520890
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10985579A Pending JPS5635223A (en) | 1979-08-29 | 1979-08-29 | Method and apparatus for control of pwm flow rate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5635223A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6050015A (en) * | 1983-08-30 | 1985-03-19 | Showa Mfg Co Ltd | Vehicle height adjusting device |
JPS60175883A (en) * | 1984-02-07 | 1985-09-10 | シ−ルド・パワ−・コ−ポレ−シヨン | Solenoid valve |
JPS63232065A (en) * | 1987-03-20 | 1988-09-28 | Akebono Brake Ind Co Ltd | Drive method and circuit for valve device |
JPH01203770A (en) * | 1988-02-08 | 1989-08-16 | Matsushita Electric Ind Co Ltd | Hot/cold water mixing controller |
JPH028570A (en) * | 1988-06-24 | 1990-01-12 | Koganei Ltd | Directional control valve using piezoelectric element |
JPH0367502A (en) * | 1989-08-04 | 1991-03-22 | Iseki & Co Ltd | Hydraulic going up and down-controlling device of ground working car |
JPH03164912A (en) * | 1989-11-24 | 1991-07-16 | Mitsubishi Electric Corp | Driving device for duty solenoid valve |
-
1979
- 1979-08-29 JP JP10985579A patent/JPS5635223A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6050015A (en) * | 1983-08-30 | 1985-03-19 | Showa Mfg Co Ltd | Vehicle height adjusting device |
JPS60175883A (en) * | 1984-02-07 | 1985-09-10 | シ−ルド・パワ−・コ−ポレ−シヨン | Solenoid valve |
JPS63232065A (en) * | 1987-03-20 | 1988-09-28 | Akebono Brake Ind Co Ltd | Drive method and circuit for valve device |
JPH01203770A (en) * | 1988-02-08 | 1989-08-16 | Matsushita Electric Ind Co Ltd | Hot/cold water mixing controller |
JPH028570A (en) * | 1988-06-24 | 1990-01-12 | Koganei Ltd | Directional control valve using piezoelectric element |
JPH0367502A (en) * | 1989-08-04 | 1991-03-22 | Iseki & Co Ltd | Hydraulic going up and down-controlling device of ground working car |
JPH03164912A (en) * | 1989-11-24 | 1991-07-16 | Mitsubishi Electric Corp | Driving device for duty solenoid valve |
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