GB638559A - Improvements in or relating to automatic motor control systems - Google Patents
Improvements in or relating to automatic motor control systemsInfo
- Publication number
- GB638559A GB638559A GB1482447A GB1482447A GB638559A GB 638559 A GB638559 A GB 638559A GB 1482447 A GB1482447 A GB 1482447A GB 1482447 A GB1482447 A GB 1482447A GB 638559 A GB638559 A GB 638559A
- Authority
- GB
- United Kingdom
- Prior art keywords
- error signal
- currents
- change
- control systems
- amplifier
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/26—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/30—Special adaptation of control arrangements for generators for aircraft
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Electron Tubes For Measurement (AREA)
- Control Of Stepping Motors (AREA)
Abstract
638,559. Automatic control systems. MILSOM, F. R., FURZEHILL LABORATORIES, Ltd., and SMITH & SONS (ENGLAND), Ltd., S. June 4, 1947, No. 14824. [Class 38 (iv)] [Also in Group XXXVII] In an automatic control system in which a signal representing the change of a condition is amplified and applied to maintain a datum condition, as in Specification 617,240, the gain of the amplifier is varied inversely as the rate of change of the difference between the two output currents of the amplifier. As shown, the A.C. error signal which is applied at the terminals 12, controls the excitation of the field windings 22, 23 and thus also the torque of the corrector motor 20 energized from the generator 25. The windings 18, 19, the D.C. currents through which are dependent on the amplitude of the error signal, control the impedances of the variable inductances 33, 33a and 34, 34a, in series with fields 22, 23, the currents through which develop D.C. potentials across resistors 26, 27. The latter voltages are applied to the primary of transformer 35, the secondary of which develops a voltage during change of the error signal, which determines the A.C. output of the ring modulator 53, 54, 55, 56 which acts in series opposition to the error signal. Specifications 576,248, 576,249, 611,037 and 611,048, [Group XXXVIII], also are referred to.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT454471D IT454471A (en) | 1947-06-04 | ||
| GB1482447A GB638559A (en) | 1947-06-04 | 1947-06-04 | Improvements in or relating to automatic motor control systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1482447A GB638559A (en) | 1947-06-04 | 1947-06-04 | Improvements in or relating to automatic motor control systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB638559A true GB638559A (en) | 1950-06-14 |
Family
ID=10048118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1482447A Expired GB638559A (en) | 1947-06-04 | 1947-06-04 | Improvements in or relating to automatic motor control systems |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB638559A (en) |
| IT (1) | IT454471A (en) |
-
0
- IT IT454471D patent/IT454471A/it unknown
-
1947
- 1947-06-04 GB GB1482447A patent/GB638559A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| IT454471A (en) |
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