GB1528573A - Electric motor control circuits - Google Patents
Electric motor control circuitsInfo
- Publication number
- GB1528573A GB1528573A GB3841774A GB3841774A GB1528573A GB 1528573 A GB1528573 A GB 1528573A GB 3841774 A GB3841774 A GB 3841774A GB 3841774 A GB3841774 A GB 3841774A GB 1528573 A GB1528573 A GB 1528573A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- circuit
- speed
- feedback
- switch
- 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
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
- H02P7/29—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
1528573 Control of brushless motors METTOY CO Ltd 22 Sept 1975 [2 Sept 1974] 38417/74 Heading H2J The winding M of a permanent magnet brushless motor is supplied through alternately switched transistors Tr4, Tr5 controlled by a monostable circuit Tr1, Tr2 having a feedback timing circuit C1, VR1 or C2, R6 selectable by a switch S, the feedback signal controlling the minimum period of circuit Tr1, Tr2 and being combined with a timing signal from a reed switch RS whose state is dependent on the rotor position, the arrangement being such that the switching instants of transistors Tr4, Tr5 are delayed with respect to the timing signal by an amount depending on the motor speed. The motor accelerates up to normal speed under the control of the timing signal (Fig. 2A, wherein signal and motor currents are in phase), after which the feedback circuit introduces a delay between these currents at normal speed (Fig. 2B), which delay varies as the speed falls below or rises above this normal speed (Figs. 2C and 2D). The normal motor speed is principally determined by the switch S, with members P1, VB1 providing slight adjustments. Also the circuit operation is such that the motor always starts in the same direction.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3841774A GB1528573A (en) | 1974-09-03 | 1974-09-03 | Electric motor control circuits |
| HK63079A HK63079A (en) | 1974-09-03 | 1979-09-06 | Improvements in and relating to electric motor control circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3841774A GB1528573A (en) | 1974-09-03 | 1974-09-03 | Electric motor control circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1528573A true GB1528573A (en) | 1978-10-11 |
Family
ID=10403321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3841774A Expired GB1528573A (en) | 1974-09-03 | 1974-09-03 | Electric motor control circuits |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB1528573A (en) |
| HK (1) | HK63079A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3010435A1 (en) * | 1980-03-19 | 1981-09-24 | Papst-Motoren Kg, 7742 St Georgen | COLLECTORLESS DC MOTOR |
| US4584505A (en) * | 1984-06-14 | 1986-04-22 | Yeongchoon Chung | Torque-speed control system for asynchronous D.C. brushless motor |
| US4748388A (en) * | 1984-07-20 | 1988-05-31 | Papst-Motoren Gmbh & Co Kg | Brushless d.c. motor having RC time-delay stage(s) and driver transistors which prevent simultaneous conduction by the power transistors of the wound conductor pair(s) of the motor winding |
| US5349275A (en) * | 1981-12-23 | 1994-09-20 | Papst Licensing Gmbh | Brushless direct current motor |
| USRE36860E (en) * | 1981-12-23 | 2000-09-12 | Papst Licensing Gmbh & Co. Kg | Brushless direct current motor |
-
1974
- 1974-09-03 GB GB3841774A patent/GB1528573A/en not_active Expired
-
1979
- 1979-09-06 HK HK63079A patent/HK63079A/en unknown
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3010435A1 (en) * | 1980-03-19 | 1981-09-24 | Papst-Motoren Kg, 7742 St Georgen | COLLECTORLESS DC MOTOR |
| US4374347A (en) | 1980-03-19 | 1983-02-15 | Papst Motoren Kg | Brushless d-c motor system |
| US5349275A (en) * | 1981-12-23 | 1994-09-20 | Papst Licensing Gmbh | Brushless direct current motor |
| USRE36860E (en) * | 1981-12-23 | 2000-09-12 | Papst Licensing Gmbh & Co. Kg | Brushless direct current motor |
| US4584505A (en) * | 1984-06-14 | 1986-04-22 | Yeongchoon Chung | Torque-speed control system for asynchronous D.C. brushless motor |
| US4748388A (en) * | 1984-07-20 | 1988-05-31 | Papst-Motoren Gmbh & Co Kg | Brushless d.c. motor having RC time-delay stage(s) and driver transistors which prevent simultaneous conduction by the power transistors of the wound conductor pair(s) of the motor winding |
Also Published As
| Publication number | Publication date |
|---|---|
| HK63079A (en) | 1979-09-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |