FR2311352A2 - Electrical furnace temperature regulation - involves control system amplifying correction of demanded temperature value - Google Patents
Electrical furnace temperature regulation - involves control system amplifying correction of demanded temperature valueInfo
- Publication number
- FR2311352A2 FR2311352A2 FR7515568A FR7515568A FR2311352A2 FR 2311352 A2 FR2311352 A2 FR 2311352A2 FR 7515568 A FR7515568 A FR 7515568A FR 7515568 A FR7515568 A FR 7515568A FR 2311352 A2 FR2311352 A2 FR 2311352A2
- Authority
- FR
- France
- Prior art keywords
- difference
- demanded
- value
- temperature
- control system
- 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
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
- G05D23/1928—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperature of one space
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Temperature (AREA)
Abstract
An electrically heated furnace has a system to control the difference between the demanded temperatures and that of the load. The difference is decreased by using a multiplication factor on the temperature difference. Amplificaton of correction of the demanded value is obtained permitting rapid establishment of process temperature. A temperature sensor senses the temperature of heating elements. A comparator compares this value with the demanded value to produce a proportioned difference signal. A second sensor close to the load senses the temperature near the load and a difference circuit produces the difference between this value and the demanded value. An amplifier multiples this difference by a coefficient. A summing circuit adds the comparator output to the amplifier output to control the heating elements.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7515568A FR2311352A2 (en) | 1975-05-13 | 1975-05-13 | Electrical furnace temperature regulation - involves control system amplifying correction of demanded temperature value |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7515568A FR2311352A2 (en) | 1975-05-13 | 1975-05-13 | Electrical furnace temperature regulation - involves control system amplifying correction of demanded temperature value |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2311352A2 true FR2311352A2 (en) | 1976-12-10 |
FR2311352B2 FR2311352B2 (en) | 1978-03-17 |
Family
ID=9155413
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7515568A Granted FR2311352A2 (en) | 1975-05-13 | 1975-05-13 | Electrical furnace temperature regulation - involves control system amplifying correction of demanded temperature value |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2311352A2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2552628A1 (en) * | 1983-09-30 | 1985-04-05 | Chantemerle Gilles | Method for the controlled cooking of any foodstuff, in particular ham, and corresponding regulating cabinet |
EP0187629A2 (en) * | 1985-01-09 | 1986-07-16 | Aktiebolaget Electrolux | A method of controlling the heating of an aqueous load in a cooking utensil |
EP0203293A1 (en) * | 1985-03-29 | 1986-12-03 | Wella Aktiengesellschaft | Control circuit for an electric sauna |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3385921A (en) * | 1967-06-21 | 1968-05-28 | Electroglas Inc | Diffusion furnace with high speed recovery |
US3625421A (en) * | 1970-04-17 | 1971-12-07 | Leeds & Northrup Co | System for controlling furnace temperatures without overshoot |
-
1975
- 1975-05-13 FR FR7515568A patent/FR2311352A2/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3385921A (en) * | 1967-06-21 | 1968-05-28 | Electroglas Inc | Diffusion furnace with high speed recovery |
US3625421A (en) * | 1970-04-17 | 1971-12-07 | Leeds & Northrup Co | System for controlling furnace temperatures without overshoot |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2552628A1 (en) * | 1983-09-30 | 1985-04-05 | Chantemerle Gilles | Method for the controlled cooking of any foodstuff, in particular ham, and corresponding regulating cabinet |
EP0187629A2 (en) * | 1985-01-09 | 1986-07-16 | Aktiebolaget Electrolux | A method of controlling the heating of an aqueous load in a cooking utensil |
EP0187629A3 (en) * | 1985-01-09 | 1986-11-05 | Aktiebolaget Electrolux | A method of controlling the heating of an aqueous load in a cooking utensil |
EP0203293A1 (en) * | 1985-03-29 | 1986-12-03 | Wella Aktiengesellschaft | Control circuit for an electric sauna |
Also Published As
Publication number | Publication date |
---|---|
FR2311352B2 (en) | 1978-03-17 |
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