JPS56110589A - Operating method and controller for pump - Google Patents
Operating method and controller for pumpInfo
- Publication number
- JPS56110589A JPS56110589A JP1250780A JP1250780A JPS56110589A JP S56110589 A JPS56110589 A JP S56110589A JP 1250780 A JP1250780 A JP 1250780A JP 1250780 A JP1250780 A JP 1250780A JP S56110589 A JPS56110589 A JP S56110589A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- discharge pressure
- pump
- pressure
- discharge
- 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 lessen the change in discharge pressure by a method in which every a fixed period of time, a target pressure is compared with discharge pressure, and when both the pressures are in out of accord with each other, the operating speed of the pump is increased or reduced by a certain varied range.
CONSTITUTION: In a step A, discharge target pressure Po, discharge pressure Pl, variable stage number (n), maximum speed Vmax, minimum speed Vmin, and initial speed Vs are stored. And, waiting time (t) is stored. At step B, variable speed range ΔV is calculated and at step C, operation is started on the basis of Vs. At step D, discharge target pressure Po is compared with discharge pressure Pb, and when discharge pressure Pl is high, command speed V is reduced by a variable speed range ΔV at the next step E in order to correct the speed of pump. In this way, since the pump speed can be corrected by judging whether discharge pressure Pl is higher or lower than the target pressure Po every a waiting time (t), the change in discharge pressure can be lessened.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1250780A JPS56110589A (en) | 1980-02-06 | 1980-02-06 | Operating method and controller for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1250780A JPS56110589A (en) | 1980-02-06 | 1980-02-06 | Operating method and controller for pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56110589A true JPS56110589A (en) | 1981-09-01 |
Family
ID=11807254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1250780A Pending JPS56110589A (en) | 1980-02-06 | 1980-02-06 | Operating method and controller for pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56110589A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58165593A (en) * | 1982-03-26 | 1983-09-30 | Hitachi Ltd | Water supply device |
| JPS5951193A (en) * | 1982-09-20 | 1984-03-24 | Hitachi Ltd | Water supply system with variable speed pump |
| JPS5965591A (en) * | 1982-10-08 | 1984-04-13 | Hitachi Ltd | Water supply device |
| JPS6111497A (en) * | 1984-06-27 | 1986-01-18 | Hitachi Ltd | Control for water supply apparatus |
| US4858172A (en) * | 1987-10-05 | 1989-08-15 | Robotic Vision Systems | Sealant flow control for robotic applications |
| JPH07197899A (en) * | 1994-12-28 | 1995-08-01 | Hitachi Ltd | Pressure tank type water supply device |
-
1980
- 1980-02-06 JP JP1250780A patent/JPS56110589A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58165593A (en) * | 1982-03-26 | 1983-09-30 | Hitachi Ltd | Water supply device |
| JPS5951193A (en) * | 1982-09-20 | 1984-03-24 | Hitachi Ltd | Water supply system with variable speed pump |
| JPH0473000B2 (en) * | 1982-09-20 | 1992-11-19 | Hitachi Ltd | |
| JPS5965591A (en) * | 1982-10-08 | 1984-04-13 | Hitachi Ltd | Water supply device |
| JPH0510518B2 (en) * | 1982-10-08 | 1993-02-09 | Hitachi Ltd | |
| JPS6111497A (en) * | 1984-06-27 | 1986-01-18 | Hitachi Ltd | Control for water supply apparatus |
| JPH033079B2 (en) * | 1984-06-27 | 1991-01-17 | Hitachi Ltd | |
| US4858172A (en) * | 1987-10-05 | 1989-08-15 | Robotic Vision Systems | Sealant flow control for robotic applications |
| JPH07197899A (en) * | 1994-12-28 | 1995-08-01 | Hitachi Ltd | Pressure tank type water supply device |
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