GB629104A - Improvements in or relating to electrical control systems - Google Patents
Improvements in or relating to electrical control systemsInfo
- Publication number
- GB629104A GB629104A GB11671/42A GB1167142A GB629104A GB 629104 A GB629104 A GB 629104A GB 11671/42 A GB11671/42 A GB 11671/42A GB 1167142 A GB1167142 A GB 1167142A GB 629104 A GB629104 A GB 629104A
- Authority
- GB
- United Kingdom
- Prior art keywords
- output
- voltage
- resistor
- phase
- displacement
- 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
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
- G05D3/14—Control of position or direction using feedback using an analogue comparing device
- G05D3/1409—Control of position or direction using feedback using an analogue comparing device with dc amplifier chain
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Percussion Or Vibration Massage (AREA)
- Rehabilitation Tools (AREA)
Abstract
629,104. Automatic electric control systems. SPERRY GYROSCOPE CO., Inc. Aug. 19, 1942, No. 11671. Convention date, Aug. 19, 1941. [Class 38 (iv)] [Also in Groups XXXVIII and XL (c)] In a position control system, a displacement signal from a controlling member is passed to an amplifier, the D.C. output of which influences the excitation of an opposed field generator supplying power to a servomotor. In the embodiment described the controlling device comprises an electromagnetic pick-off 101 having a central pole supplied with A.C. which is variably coupled, by a suitably-shaped movable member 161, with the outer limbs carrying opposed windings so that the output from the latter windings varies in magnitude and phase with the displacement of the member 161 from the central position. Such a device forms the subject of Specification 629,150. The output is brought into phase with the supply 137 by a phase-shifter 106 and applied to a transformer 105, whose secondary winding 109 feeds the opposed halves of valve 121. According to the phase of the input, one half of this valve passes current on successive half-waves of the supply and, .after smoothing by a tuned circuit 145, 147 the output appears across resistor 141, 143 as a voltage proportional to the displacement of the member 161. The changes in this output pass through condenser 165, 169 and appear as a velocity derivative across resistor 167, 171 which are each further connected through a condenser 173, 181 to give an acceleration derivative output across resistor 175, 183. To this voltage are added controllable amounts of velocity derivative, by resistors 179, 185 and of displacement voltage, by potentiometers 187, 189, and the resultant is applied to a duplex amplifying valve 177. The resultant voltage appears across a resistor 205, 207 directly coupled to duplex triode 223 but, since this is connected to the A.C. supply in the opposite sense, the voltage is made to persist during each subsequent half-wave by charging condenser 217. The final output flows through the appropriate one of the opposed field windings 237, 239 of generator 241, of which the armature is driven at constant speed, by motor 242, to give an output proportional to the excitation. This drives the servomotor 247 which may restore the element 161 by a follow-up action and position any controlled object such as a rudder 251. Specification 539,995 also is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US629104XA | 1941-08-19 | 1941-08-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB629104A true GB629104A (en) | 1949-09-13 |
Family
ID=22045640
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11671/42A Expired GB629104A (en) | 1941-08-19 | 1942-08-19 | Improvements in or relating to electrical control systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB629104A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104541577A (en) * | 2012-05-16 | 2015-04-22 | 特兰贝里股份有限公司 | Method for regulating light sources and apparatus for practising the method |
-
1942
- 1942-08-19 GB GB11671/42A patent/GB629104A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104541577A (en) * | 2012-05-16 | 2015-04-22 | 特兰贝里股份有限公司 | Method for regulating light sources and apparatus for practising the method |
EP2850921A4 (en) * | 2012-05-16 | 2016-05-25 | Tranberg As | Method for regulating light sources and apparatus for practising the method |
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