GB875885A - Improvements in or relating to speed control apparatus - Google Patents
Improvements in or relating to speed control apparatusInfo
- Publication number
- GB875885A GB875885A GB110259A GB110259A GB875885A GB 875885 A GB875885 A GB 875885A GB 110259 A GB110259 A GB 110259A GB 110259 A GB110259 A GB 110259A GB 875885 A GB875885 A GB 875885A
- Authority
- GB
- United Kingdom
- Prior art keywords
- roll
- speed
- web
- output
- frequency
- 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
- 230000003287 optical effect Effects 0.000 abstract 2
- 239000003990 capacitor Substances 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 239000006249 magnetic particle Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
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
- H02P29/0027—Controlling a clutch between the prime mover and the load
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Coating Apparatus (AREA)
Abstract
875,885. Automatic speed-control systems. ILFORD Ltd. Dec. 31, 1959 [Jan. 12, 1959], No. 1102/59. Class 38 (4). [Also in Group XVI] A web 1 passes from feed roll 2 to a roll 6 at which a coating is applied to the web which then passes to a drying zone 8 and to a take-up roll 12, a roll 10 being driven to draw the web through the system of rolls. The roll 6 drives magnetic tape 13 so that an electric signal is produced at head 16, the frequency of the signal being proportional to the speed of the roll 6. In another arrangement, a radial optical grating is secured to the roll 6 and a fixed optical grating is placed in line therewith, a beam of radiation passing through the gratings to a photo-cell which thus provides a signal having its frequency proportional to the speed of the roller 6, Figs. 2, 3 (not shown). The roll 6, 4 or 7 has a driving clutch of the magnetic particle type, powered by an electric motor and a braking clutch with an anchor. The output from the photo-cell is amplified, limited and frequency demodulated. The resultant frequency proportional voltage is compared with a direct reference voltage and the error voltage is applied to an amplifier which energizes the two clutches in a push-pull manner. The speed of the web is thus maintained at a substantially constant value determined by the reference voltage, Fig. 5 (not shown). Alternatively, the output of the frequency demodulator may be coupled through a capacitor to the input of a push-pull amplifier controlling the clutches. This system does not control the mean speed of the web but minimizes short-term speed variations, Fig. 6 (not shown). In a further modification, the output of the photo-cell is amplified and compared with the output of a reference oscillator. An output voltage is thus obtained proportional to the phase difference between these two signals and this output voltage is applied to a push-pull D.C. amplifier controlling the clutches, Fig. 7 (not shown).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB110259A GB875885A (en) | 1959-01-12 | 1959-01-12 | Improvements in or relating to speed control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB110259A GB875885A (en) | 1959-01-12 | 1959-01-12 | Improvements in or relating to speed control apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB875885A true GB875885A (en) | 1961-08-23 |
Family
ID=9716193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB110259A Expired GB875885A (en) | 1959-01-12 | 1959-01-12 | Improvements in or relating to speed control apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB875885A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4475967A (en) * | 1980-12-19 | 1984-10-09 | Murata Manufacturing Co., Ltd. | Method of making a ceramic capacitor |
| CN115366385A (en) * | 2022-07-29 | 2022-11-22 | 北京鑫航成科技发展有限公司 | Automatic soft capsule production equipment and speed regulation method |
| CN116685783A (en) * | 2020-12-22 | 2023-09-01 | 吉凯恩汽车有限公司 | system for controlling the clutch |
-
1959
- 1959-01-12 GB GB110259A patent/GB875885A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4475967A (en) * | 1980-12-19 | 1984-10-09 | Murata Manufacturing Co., Ltd. | Method of making a ceramic capacitor |
| CN116685783A (en) * | 2020-12-22 | 2023-09-01 | 吉凯恩汽车有限公司 | system for controlling the clutch |
| CN116685783B (en) * | 2020-12-22 | 2024-05-07 | 吉凯恩汽车有限公司 | Clutch control system |
| CN115366385A (en) * | 2022-07-29 | 2022-11-22 | 北京鑫航成科技发展有限公司 | Automatic soft capsule production equipment and speed regulation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1454110A (en) | Tension control sinterable powder compositions | |
| US3093284A (en) | Differential capstan assembly | |
| GB1353495A (en) | Controlled velocity drive control | |
| GB898467A (en) | Web movement control apparatus | |
| GB1144650A (en) | Improvements in or relating to tape recording and/or reproducing apparatus | |
| GB1263247A (en) | Improvements in apparatus for controlling the tension in flexible material | |
| GB1483268A (en) | Web transport method and apparatus | |
| GB875885A (en) | Improvements in or relating to speed control apparatus | |
| GB875473A (en) | Electrical analogue computing apparatus | |
| GB1422250A (en) | Tape transport system | |
| US2783426A (en) | Precision motor drive device | |
| GB1519780A (en) | Tape transport systems | |
| GB1011364A (en) | Improved tape transport system | |
| ES404595A1 (en) | Servo drive for a rotating system | |
| GB1082876A (en) | Record tape feeding apparatus | |
| US3223338A (en) | Tape drive mechanism | |
| GB1318084A (en) | Metering the linear speed of wire being wound on to or from a coil wound on a drum | |
| JPS5755567A (en) | Tracking controller | |
| SE8401147L (en) | DEVICE FOR SUPPLY OF QUITTO AND / OR JOURNAL TAPE | |
| GB927798A (en) | Speed regulating apparatus for recording media | |
| GB655005A (en) | Improvements in speed measuring and controlling devices | |
| GB1083604A (en) | Servo system suitable for speed control | |
| GB1072150A (en) | Web tensioning apparatus | |
| JPS54100705A (en) | Servo control mechanism for tape recorder | |
| JPS56111867A (en) | Optical system driving device in copying machine |