JPS6454501A - Control system for plural final control elements - Google Patents
Control system for plural final control elementsInfo
- Publication number
- JPS6454501A JPS6454501A JP21005987A JP21005987A JPS6454501A JP S6454501 A JPS6454501 A JP S6454501A JP 21005987 A JP21005987 A JP 21005987A JP 21005987 A JP21005987 A JP 21005987A JP S6454501 A JPS6454501 A JP S6454501A
- Authority
- JP
- Japan
- Prior art keywords
- feed water
- bfp
- flow rate
- value
- signal
- 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 Positive-Displacement Pumps (AREA)
- Feedback Control In General (AREA)
Abstract
PURPOSE:To stably and quickly execute the addition/decrease by applying a bias signal applied to a final control element to be brought to addition/decrease, to a master signal being a command to other final control element being in the course of an automatic control. CONSTITUTION:Only a motor driving feed water pump M-BFP1 is being operated, and a turbine driving feed water pump T-BFP2 is started by other controller and holding in a no-feed water control state. In this case, by adding a switch 56 of the T-BFP2, a bias value is varied at a prescribed rate to 0% from a deviation of a subtracter 54. By adding this signal to a feed water command value by a feedback, the T-BFP flow rate and the M-BFP flow rate become an equal quantity and the flow rates are balanced. Subsequently, by decreasing a switch 48 of the M-BFP1, the bias value is varied by a prescribed value to -100% from a deviation of a subtracter 46. As a result, a feed water master signal increases to the T-BFP flow rate = a feed water master.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21005987A JPS6454501A (en) | 1987-08-26 | 1987-08-26 | Control system for plural final control elements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21005987A JPS6454501A (en) | 1987-08-26 | 1987-08-26 | Control system for plural final control elements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6454501A true JPS6454501A (en) | 1989-03-02 |
Family
ID=16583134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21005987A Pending JPS6454501A (en) | 1987-08-26 | 1987-08-26 | Control system for plural final control elements |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6454501A (en) |
-
1987
- 1987-08-26 JP JP21005987A patent/JPS6454501A/en active Pending
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