JPS56142322A - Method for controlling combustion quantity having two kinds of control mode - Google Patents
Method for controlling combustion quantity having two kinds of control modeInfo
- Publication number
- JPS56142322A JPS56142322A JP4587480A JP4587480A JPS56142322A JP S56142322 A JPS56142322 A JP S56142322A JP 4587480 A JP4587480 A JP 4587480A JP 4587480 A JP4587480 A JP 4587480A JP S56142322 A JPS56142322 A JP S56142322A
- Authority
- JP
- Japan
- Prior art keywords
- computer
- change
- switch
- over
- control
- 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
Abstract
PURPOSE: To perform a control of the combustion quantity in a wide range with good response by comparing a control output with a preset threshold value, and changing a change-over switch by the result of the comparison over to either of the continuous control mode and ON-OFF time proportional control mode.
CONSTITUTION: The temperature of a heat treatment furnace 1 provided with a burner 2 is detected by a temperature sensor 3, and its output is sent to a PID computer 6. The computer 6 computes the control quantity from a furnace temperature set value To, other constants and a furnace temperature set value T, and supplies as a current form i(ΔT) to a change-over switch 7. The change-over switch 7 compares the control output i(ΔT) with a bordery value i(k) designated by a threshold value setter 8. In a case where i(ΔT)>i(k), the change-over switch 7 is changed over to the right hand, and in a reverse case, it is changed over to the left hand. When the switch 7 is connected to the right hand, the computer 6 is directly connected to the actuator 10 of a fuel valve 4, and conversely in a case where the switch 7 is connected to the left hand, the computer 6 is connected thereto through the ON-OFF time proportional converter 9.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4587480A JPS5830499B2 (en) | 1980-04-08 | 1980-04-08 | Combustion amount control method with two types of control modes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4587480A JPS5830499B2 (en) | 1980-04-08 | 1980-04-08 | Combustion amount control method with two types of control modes |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56142322A true JPS56142322A (en) | 1981-11-06 |
JPS5830499B2 JPS5830499B2 (en) | 1983-06-29 |
Family
ID=12731350
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4587480A Expired JPS5830499B2 (en) | 1980-04-08 | 1980-04-08 | Combustion amount control method with two types of control modes |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5830499B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63231074A (en) * | 1987-03-18 | 1988-09-27 | Hitachi Ltd | Method and device for flow rate control |
-
1980
- 1980-04-08 JP JP4587480A patent/JPS5830499B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63231074A (en) * | 1987-03-18 | 1988-09-27 | Hitachi Ltd | Method and device for flow rate control |
Also Published As
Publication number | Publication date |
---|---|
JPS5830499B2 (en) | 1983-06-29 |
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