JPS5794814A - Flow rate controller of opened waterway system - Google Patents
Flow rate controller of opened waterway systemInfo
- Publication number
- JPS5794814A JPS5794814A JP15377581A JP15377581A JPS5794814A JP S5794814 A JPS5794814 A JP S5794814A JP 15377581 A JP15377581 A JP 15377581A JP 15377581 A JP15377581 A JP 15377581A JP S5794814 A JPS5794814 A JP S5794814A
- Authority
- JP
- Japan
- Prior art keywords
- water level
- opened
- flow rate
- deviation
- waterway
- 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
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
- G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Non-Electrical Variables (AREA)
Abstract
PURPOSE:To compensate the water level, by deciding the place of an opened waterway showing the mean water level in consideration of the change of water levels of the upper and lower port junction wells in an opened waterway system, installing a water level meter to compare the mean water level with a target water level and adding the amount of deviation of the comparison to the flowed- in rate after coverting the deviation into a flow rate. CONSTITUTION:A water level meter 8 is installed at the area that is shown by the area ratio A2:A1 of an opened waterway system 15 between the upper and lower junction well areas A1 and A2. Thus the mean water level is detected for the system 15. The detected water level is compared with a target water level L0 through a comparator 10. Then the deviation value is calculated, and the output signal of the comparator 10 is produced. The difference of water levels is expressed in terms of a flow rate through an operator 12 and supplied to an adder 4 to be added to the flowed-out rate of a detector 3. Then the compensation is carried out for the water level to set the water level of the lower port junction well 13 at a constant value. In such way, the water level of the system 15 can be kept stable to enhance the control performance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15377581A JPS5794814A (en) | 1981-09-30 | 1981-09-30 | Flow rate controller of opened waterway system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15377581A JPS5794814A (en) | 1981-09-30 | 1981-09-30 | Flow rate controller of opened waterway system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5794814A true JPS5794814A (en) | 1982-06-12 |
Family
ID=15569862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15377581A Pending JPS5794814A (en) | 1981-09-30 | 1981-09-30 | Flow rate controller of opened waterway system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5794814A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58219616A (en) * | 1982-06-14 | 1983-12-21 | Toshiba Eng Co Ltd | Desired value controller for flow rate of conveyed water in open channel |
| JPH0423042U (en) * | 1990-06-14 | 1992-02-25 |
-
1981
- 1981-09-30 JP JP15377581A patent/JPS5794814A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58219616A (en) * | 1982-06-14 | 1983-12-21 | Toshiba Eng Co Ltd | Desired value controller for flow rate of conveyed water in open channel |
| JPH0423042U (en) * | 1990-06-14 | 1992-02-25 |
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