GB897963A - Improvements in polyphase alternating current servo systems - Google Patents
Improvements in polyphase alternating current servo systemsInfo
- Publication number
- GB897963A GB897963A GB3326357A GB3326357A GB897963A GB 897963 A GB897963 A GB 897963A GB 3326357 A GB3326357 A GB 3326357A GB 3326357 A GB3326357 A GB 3326357A GB 897963 A GB897963 A GB 897963A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- alternating current
- current servo
- servo systems
- polyphase alternating
- 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
- G05D3/1418—Control of position or direction using feedback using an analogue comparing device with ac amplifier chain
-
- 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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/10—Controlling by adding a dc current
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Control Of Multiple Motors (AREA)
Abstract
897,963. Control of A.C. motors. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Oct. 24, 1958 [Oct. 24, 1957], No. 33263/57. Class 38 (3). A two-phase servomotor 1 has one winding 2 fed with a reference A.C. voltage, and the. other winding 3 fed from a transformer TR with a voltage in quadrature with the reference voltage, to which is added a small D.C. voltage developed across a series resistor RE. The D.C. voltage produces small oscillations of the rotor which tend to reduce the effects of friction and " stiction." Specification 764,588 is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3326357A GB897963A (en) | 1957-10-24 | 1957-10-24 | Improvements in polyphase alternating current servo systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3326357A GB897963A (en) | 1957-10-24 | 1957-10-24 | Improvements in polyphase alternating current servo systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB897963A true GB897963A (en) | 1962-06-06 |
Family
ID=10350658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3326357A Expired GB897963A (en) | 1957-10-24 | 1957-10-24 | Improvements in polyphase alternating current servo systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB897963A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE30068E (en) | 1974-04-17 | 1979-08-07 | Hobart Corporation | Pulsating torque apparatus and method |
-
1957
- 1957-10-24 GB GB3326357A patent/GB897963A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE30068E (en) | 1974-04-17 | 1979-08-07 | Hobart Corporation | Pulsating torque apparatus and method |
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