JPS6414621A - Flow rate regulating method - Google Patents
Flow rate regulating methodInfo
- Publication number
- JPS6414621A JPS6414621A JP17176587A JP17176587A JPS6414621A JP S6414621 A JPS6414621 A JP S6414621A JP 17176587 A JP17176587 A JP 17176587A JP 17176587 A JP17176587 A JP 17176587A JP S6414621 A JPS6414621 A JP S6414621A
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- valve
- opening adjusting
- control
- adjusting operation
- 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
Abstract
PURPOSE:To realize the regulating with fine accuracy by executing simultaneously in parallel a rough adjustment control by an opening adjusting operation of a large valve, and a fine adjustment control by an opening adjusting operation of a small valve. CONSTITUTION:A flow rate of a fluid flowing in a fluid carrying system becomes a regulated variable, a valve opening adjusting operation is executed so that this flow rate follows up a fluctuated object value, and a flow rate variation portion is regulated by distributing it into a rough adjustment control by an opening adjusting operation of a large valve 3 and a fine adjustment control by an opening adjusting operation of a small wave 4. As for its distributing method, in case of a repeated control flow, the distribution is executed in a state that an opening adjusting manipulated variable of a small valve in the control flow of each time is allowed to have a margin, and when its margin does not exist in the small valve 4, the distribution is executed so as to compensate a portion for generating its margin by an opening adjusting manipulated variable of the large valve 3. Accordingly, the range of the flow rate which can be controlled extends over a wide range from '0' to the sum of each maximum flow rate of the large valve and the small valve, and also, as for the control accuracy which follows up the flow rate target value in its range, the accuracy being equal to the control accuracy of the small valve is secured.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17176587A JPS6414621A (en) | 1987-07-08 | 1987-07-08 | Flow rate regulating method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17176587A JPS6414621A (en) | 1987-07-08 | 1987-07-08 | Flow rate regulating method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6414621A true JPS6414621A (en) | 1989-01-18 |
Family
ID=15929263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17176587A Pending JPS6414621A (en) | 1987-07-08 | 1987-07-08 | Flow rate regulating method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6414621A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57124089A (en) * | 1981-01-26 | 1982-08-02 | Hitachi Ltd | Pump operation control method |
JPS61262553A (en) * | 1985-05-16 | 1986-11-20 | 株式会社荏原製作所 | Heat pump device |
-
1987
- 1987-07-08 JP JP17176587A patent/JPS6414621A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57124089A (en) * | 1981-01-26 | 1982-08-02 | Hitachi Ltd | Pump operation control method |
JPS61262553A (en) * | 1985-05-16 | 1986-11-20 | 株式会社荏原製作所 | Heat pump device |
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