GB906124A - Improvements in controllers - Google Patents
Improvements in controllersInfo
- Publication number
- GB906124A GB906124A GB36465/57A GB3646557A GB906124A GB 906124 A GB906124 A GB 906124A GB 36465/57 A GB36465/57 A GB 36465/57A GB 3646557 A GB3646557 A GB 3646557A GB 906124 A GB906124 A GB 906124A
- Authority
- GB
- United Kingdom
- Prior art keywords
- control
- space
- motor
- motors
- potentiometer
- 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.)
- Expired
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
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
- G05D23/2451—Details of the regulator
- G05D23/2453—Details of the regulator using discharge tubes
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B11/00—Automatic controllers
- G05B11/01—Automatic controllers electric
- G05B11/012—Automatic controllers electric details of the transmission means
- G05B11/013—Automatic controllers electric details of the transmission means using discharge tubes
-
- 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
- G05D23/1906—Control of temperature characterised by the use of electric means using an analogue comparing device
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Temperature (AREA)
- Air Conditioning Control Device (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
906,124. Automatic temperature control systems. RHEOSTATIC CO. Ltd. Oct. 30, 1958 [Nov. 22, 1957; Jan. 15, 1958], Nos. 36465/57 and 1496/58. Class 38 (4). A control system for controlling a physical variable-such as the temperature in a space to be heated or cooled-comprises a controller responsive to the variable and effective to control the operation of a number of correcting units, the control being transferred from one correcting unit to another by means of transfer switches operated by the correcting units, the control effected by the controller having a proportional and an integral function. A space to be heated, cooled or ventilated includes heating means controlled by a reversible motor Ml, dampers on the fresh air and recirculated air intakes operated by a similar motor M2, cooling means operated by another similar motor M4 and lastly yet another reversible motor M3 which provides a " dead zone " in the control by causing the set temperature of the space to be increased between the operation of motors M2 and M4. The temperature of the space is sensed by a resistance thermometer 4 which, by way of a valve 8, controls the proportional potential appearing across a potentiometer 15 which then controls, by way of further valves 16, 17, the current passing through relay coils RC, RH. These relays are set to operate at differing current levels so controlling the potentials appearing on terminals A, B or A, C and thereby determining the direction of rotation of the motors M1-M4. A feedback supply is obtained from a rectifier 34 which is fed, by way of terminals DH to potentiometers 40-43 having slides driven by the respective motors M1-M4. The feedback from these potentiometers by way of terminals E, F, G controls an integrating circuit 24, 35 whereby motors M1, M2, M4 are constrained to move in a stepwise manner, whilst the feedback from potentiometer 42 by way of terminal J is taken to a resistor 11 and thus affects the proportional signal taken from potentiometer 15. If the space being controlled is overheated the sensing thermometer 4 will cause operation of relays RC, RH such that motor M1 runs to close the heating valve and drive the slider of potentiometer 40 downwardly. If when the heating valve is closed the space is still overheated, the limit switch LS1b closes to transfer the control to motor M2 which runs to close the dampers for the recirculating air and open those for the fresh air. Should this not effect sufficient control, limit switch LS2b closes to transfer the control to motor M3 which runs to alter the potential on the potentiometer 15 and thus increase the set temperature of the space. Should even further control be needed the limit switch LS3b closes to transfer the control to motor M4 which runs to open the cooling valve to decrease the temperature of the controlled space. Similar control is exerted when the controlled space is underheated with the motors M1-M4 operating in the reverse fashion. A further embodiment is described wherein one motor is arranged to effect the controls exerted by motors M2, M3 of Fig. 2 and in which two thermostats are placed in the fresh air intake, these thermostats having different control ranges. Specification 906,125 is referred to.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB16063/62A GB906125A (en) | 1957-11-22 | 1957-11-22 | Improvements in electronic controllers |
GB36465/57A GB906124A (en) | 1957-11-22 | 1957-11-22 | Improvements in controllers |
DER24380A DE1201898B (en) | 1957-11-22 | 1958-11-12 | Discontinuously working electrical controller for process control systems with great inertia |
NL233299A NL106009C (en) | 1957-11-22 | 1958-11-17 | DEVICE FOR CONTROLLING A CONTROLLABLE PHYSICAL GREATNESS |
CH6635758A CH375867A (en) | 1957-11-22 | 1958-11-19 | Device for adjusting a physical quantity |
FR779761A FR1239928A (en) | 1957-11-22 | 1958-11-21 | Improvements to electronic controllers |
NL293942D NL293942A (en) | 1957-11-22 | 1963-06-12 | DEVICE FOR CONTROLLING A CONTROLLABLE PHYSICAL GREATNESS |
NL293942A NL125737C (en) | 1957-11-22 | 1963-06-12 | DEVICE FOR REGULATING THE TEMPERATURE IN A BASICALLY CLOSED ROOM, FITTED WITH AN AIR HEATING DEVICE AND WITH AN AIR COOLING DEVICE |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1239928X | 1957-11-22 | ||
GB1201898X | 1957-11-22 | ||
GB16063/62A GB906125A (en) | 1957-11-22 | 1957-11-22 | Improvements in electronic controllers |
GB233299X | 1957-11-22 | ||
GB36465/57A GB906124A (en) | 1957-11-22 | 1957-11-22 | Improvements in controllers |
GB293942X | 1957-11-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB906124A true GB906124A (en) | 1962-09-19 |
Family
ID=62200068
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB36465/57A Expired GB906124A (en) | 1957-11-22 | 1957-11-22 | Improvements in controllers |
GB16063/62A Expired GB906125A (en) | 1957-11-22 | 1957-11-22 | Improvements in electronic controllers |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16063/62A Expired GB906125A (en) | 1957-11-22 | 1957-11-22 | Improvements in electronic controllers |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE1201898B (en) |
FR (1) | FR1239928A (en) |
GB (2) | GB906124A (en) |
NL (3) | NL106009C (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2510992C3 (en) * | 1975-03-13 | 1982-01-07 | Hydrotherm Gerätebau GmbH, 6110 Dieburg | Control device for actuators that can be switched on and off individually |
US4445342A (en) * | 1982-08-26 | 1984-05-01 | United Technologies Corporation | Multi-zone temperature control in air cycle refrigeration systems |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB456348A (en) * | 1934-05-09 | 1936-11-09 | Associated Electric Lab Inc | Improvements in or relating to temperature controlling arrangements |
GB479836A (en) * | 1936-06-05 | 1938-02-07 | Albert Callender | Improvements in or relating to the automatic control of temperature |
DE966809C (en) * | 1939-10-11 | 1957-09-12 | Aeg | Arrangement for the electrical control of technical-physical operating parameters using a servomotor |
GB718171A (en) * | 1948-01-26 | 1954-11-10 | Sperry Gyroscope Co Ltd | Improvements in or relating to servo systems |
DE828793C (en) * | 1949-08-12 | 1952-01-21 | Siemens Schuckertwerke A G | Control device for the distributor flaps of roller mills |
DE860427C (en) * | 1950-04-26 | 1952-12-22 | Hartmann & Braun Ag | Regulator with feedback |
DE1005600B (en) * | 1952-02-04 | 1957-04-04 | Siemens Ag | On the movement of the actuator dependent feedback device for pressure medium-operated control devices |
-
1957
- 1957-11-22 GB GB36465/57A patent/GB906124A/en not_active Expired
- 1957-11-22 GB GB16063/62A patent/GB906125A/en not_active Expired
-
1958
- 1958-11-12 DE DER24380A patent/DE1201898B/en active Pending
- 1958-11-17 NL NL233299A patent/NL106009C/en active
- 1958-11-21 FR FR779761A patent/FR1239928A/en not_active Expired
-
1963
- 1963-06-12 NL NL293942D patent/NL293942A/en unknown
- 1963-06-12 NL NL293942A patent/NL125737C/en active
Also Published As
Publication number | Publication date |
---|---|
NL125737C (en) | 1968-08-15 |
FR1239928A (en) | 1960-09-02 |
GB906125A (en) | 1962-09-19 |
DE1201898B (en) | 1965-09-30 |
NL106009C (en) | 1963-09-16 |
NL293942A (en) | 1965-04-12 |
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