GB1026535A - Improvements in or relating to variable speed driving systems - Google Patents
Improvements in or relating to variable speed driving systemsInfo
- Publication number
- GB1026535A GB1026535A GB303962A GB303962A GB1026535A GB 1026535 A GB1026535 A GB 1026535A GB 303962 A GB303962 A GB 303962A GB 303962 A GB303962 A GB 303962A GB 1026535 A GB1026535 A GB 1026535A
- Authority
- GB
- United Kingdom
- Prior art keywords
- brake
- speed
- clutch
- strobe
- wheel
- 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
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/0016—Control of angular speed of one shaft without controlling the prime mover
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
- Braking Arrangements (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
1,026,535. Automatic speed control. ELECTRIC & MUSICAL INDUSTRIES Ltd. Jan. 24, 1963 [Jan. 26,1962], No. 3039/62. Heading G3R. [Also in Division H2] The speed, e.g. of a magnetic tape capstain 1, is controlled by the selective and progressive energisation of an electromagnetic clutch 5 or brake 6 according to whether a speed signal is above or below a reference level. The signal is generated by a strobe disc 13 and photo-cell 12 whose output pulses are "squared" at 14 and converted to a D.C'. voltage of a magnitude proportional to frequency at 15. Half wave rectifiers 18,19 detect the polarity of the difference signal which is applied through a D.C. amplifier 20 or 21 to the clutch or brake respectively. Speed adjustment may be by adjustment of the reference at 17 or by providing a number of tracks on the strobe wheel, each to produced the same frequency when the wheel rotates at different speeds, and selecting the appropriate track either by switching to its; own photocell or by radial movement of a single photocell. The clutch and brake may be of the eddy current type (see Division H2) or they may be of the powder type and combined in a single unit with the strobe wheel. A driving motor 3 may be A.C. shaded pole or squirrel cage, or D.C. shunt or compound wound.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB303962A GB1026535A (en) | 1962-01-26 | 1962-01-26 | Improvements in or relating to variable speed driving systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB303962A GB1026535A (en) | 1962-01-26 | 1962-01-26 | Improvements in or relating to variable speed driving systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1026535A true GB1026535A (en) | 1966-04-20 |
Family
ID=9750787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB303962A Expired GB1026535A (en) | 1962-01-26 | 1962-01-26 | Improvements in or relating to variable speed driving systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1026535A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5072181A (en) * | 1986-12-22 | 1991-12-10 | Siemens Aktiengesellschaft | Angle position transmitter having a static magnetic field sensor and a magnet on the transmitter shaft for detecting a full revolution of the transmitter shaft |
CN109441423A (en) * | 2018-12-18 | 2019-03-08 | 濮阳市百福瑞德石油科技有限公司 | Petroleum drilling engineering drilling machine/tourist bus prevents control method and system out of control |
-
1962
- 1962-01-26 GB GB303962A patent/GB1026535A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5072181A (en) * | 1986-12-22 | 1991-12-10 | Siemens Aktiengesellschaft | Angle position transmitter having a static magnetic field sensor and a magnet on the transmitter shaft for detecting a full revolution of the transmitter shaft |
CN109441423A (en) * | 2018-12-18 | 2019-03-08 | 濮阳市百福瑞德石油科技有限公司 | Petroleum drilling engineering drilling machine/tourist bus prevents control method and system out of control |
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