JPS5534766A - Fluid flow rate control device - Google Patents
Fluid flow rate control deviceInfo
- Publication number
- JPS5534766A JPS5534766A JP10826378A JP10826378A JPS5534766A JP S5534766 A JPS5534766 A JP S5534766A JP 10826378 A JP10826378 A JP 10826378A JP 10826378 A JP10826378 A JP 10826378A JP S5534766 A JPS5534766 A JP S5534766A
- Authority
- JP
- Japan
- Prior art keywords
- air flow
- inv
- loop
- control
- comparator
- 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
- Feedback Control In General (AREA)
- Safety Devices In Control Systems (AREA)
- Flow Control (AREA)
Abstract
PURPOSE: To make it possible to control air flow stably in the measuring range of the air flow meter, by changing the control system from the closed loop to the open loop in case the observation with the air flow detector is much less than its rating.
CONSTITUTION: The chlorine gas setting value "inv-Q"f signals which are proportional to the flow rate of raw water are input to the comparator 12 which judges changeover of the loop, the function generator 13 in which characteristics of opening-air flow are stored, and the PI controller 2 which executes the air flow control. In case "inv-Q"f is higher than the projected value to the rating 100%, the changeover mechanism 15 conducts between A and c when the output signal S of the comparator 12 locates the contact of the loop changeover mechanism 15 at the side A, the observation "inv-Q"f from the detector 6 and the switch 8 becomes feedback value by the controller 2, and the air flow control by the closed loop is executed. In case "inv-Q"f becomes lower than the projected value, the comparator 12 is operated, conducts between B and C, and the generator 13 supplies the opening setting value Ka corresponding to "inv-Q"f to the opening setting unit 14. Thus the opening control by the open loop is executed without feedback of the air flow observation "inv-Q"f.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10826378A JPS589442B2 (en) | 1978-09-04 | 1978-09-04 | fluid flow control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10826378A JPS589442B2 (en) | 1978-09-04 | 1978-09-04 | fluid flow control device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5534766A true JPS5534766A (en) | 1980-03-11 |
JPS589442B2 JPS589442B2 (en) | 1983-02-21 |
Family
ID=14480212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10826378A Expired JPS589442B2 (en) | 1978-09-04 | 1978-09-04 | fluid flow control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS589442B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63210199A (en) * | 1987-02-27 | 1988-08-31 | 株式会社荏原製作所 | Steaming treatment method and apparatus |
JPH0256380A (en) * | 1988-08-20 | 1990-02-26 | Tsudakoma Corp | Quick response automatic control device of aligned string stretch |
-
1978
- 1978-09-04 JP JP10826378A patent/JPS589442B2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63210199A (en) * | 1987-02-27 | 1988-08-31 | 株式会社荏原製作所 | Steaming treatment method and apparatus |
JPH0256380A (en) * | 1988-08-20 | 1990-02-26 | Tsudakoma Corp | Quick response automatic control device of aligned string stretch |
JP2694347B2 (en) * | 1988-08-20 | 1997-12-24 | 津田駒工業株式会社 | Automatic control device for quick response of aligned yarn stretch |
Also Published As
Publication number | Publication date |
---|---|
JPS589442B2 (en) | 1983-02-21 |
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