FR2340642A1 - Control circuit for commutatorless DC motor - sensing stages detect induced voltages in stator windings to activate ring counter producing phase signals - Google Patents
Control circuit for commutatorless DC motor - sensing stages detect induced voltages in stator windings to activate ring counter producing phase signalsInfo
- Publication number
- FR2340642A1 FR2340642A1 FR7702242A FR7702242A FR2340642A1 FR 2340642 A1 FR2340642 A1 FR 2340642A1 FR 7702242 A FR7702242 A FR 7702242A FR 7702242 A FR7702242 A FR 7702242A FR 2340642 A1 FR2340642 A1 FR 2340642A1
- Authority
- FR
- France
- Prior art keywords
- stator windings
- motor
- ring counter
- phase signals
- output
- 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.)
- Granted
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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
A switching circuit is used to provide connection between the supply and three stator windings in a commutator less d.c. motor using induced voltage within the windings. The three stator windings are coupled to inputs (1, 2, 3) of three sensing stages (4, 5, 6) each with an output (T) that is '1' when the winding voltage is positive and 'o' when negative. A NAND gate (7) combines these sensing signals to generate an output when any 'T' output goes low. The sensing stage processes the winding voltage through filter and is compared with a stored peak value. A comparator generates an output at a predetermined level that is differentiated to generate the 'T' signal. The NAND gate (7) generates a grating signal over an OR gate (8) to change the state of a ring counter (10) to produce the phase signals (PH1, PH2, PH3) at specific intervals.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2604638A DE2604638C3 (en) | 1976-02-06 | 1976-02-06 | Control circuit for a brushless DC motor |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2340642A1 true FR2340642A1 (en) | 1977-09-02 |
FR2340642B1 FR2340642B1 (en) | 1982-04-16 |
Family
ID=5969221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7702242A Granted FR2340642A1 (en) | 1976-02-06 | 1977-01-27 | Control circuit for commutatorless DC motor - sensing stages detect induced voltages in stator windings to activate ring counter producing phase signals |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE2604638C3 (en) |
FR (1) | FR2340642A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2404331A1 (en) * | 1977-09-27 | 1979-04-20 | Siemens Ag | CONTINUOUS CURRENT MOTOR WITHOUT COLLECTOR |
EP0222604A2 (en) * | 1985-11-08 | 1987-05-20 | Maghemite Inc. | Starter procedure for permanent magnet motor |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3036908C2 (en) * | 1980-09-30 | 1986-03-20 | Siemens AG, 1000 Berlin und 8000 München | Brushless electronic motor |
US4746844A (en) * | 1985-07-16 | 1988-05-24 | Maghemite Inc. | Control and operation of brushless continuous torque toroid motor |
DE3602227A1 (en) * | 1986-01-25 | 1987-07-30 | Philips Patentverwaltung | COMMUTATION CIRCUIT FOR A COLLECTORLESS DC MOTOR |
US4678973A (en) * | 1986-10-07 | 1987-07-07 | General Motors Corporation | Sensorless starting control for a brushless DC motor |
SE454928B (en) * | 1986-10-10 | 1988-06-06 | Ems Electronic Motor Systems | DRIVE DEVICE FOR A RELUCTION ENGINE |
JP2875529B2 (en) * | 1987-10-31 | 1999-03-31 | ソニー株式会社 | Drive device for sensorless brushless motor |
DE10157900A1 (en) | 2000-12-07 | 2002-08-08 | Heidelberger Druckmasch Ag | Sensorless commutation circuit for brushless DC motor, continuously compares voltages of star center points of motor star and virtual star in all phases, and outputs commutation signal to control commutation of DC motor |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1068842A (en) * | 1962-10-25 | 1967-05-17 | Matsushita Electric Ind Co Ltd | Synchronous motors |
US3551765A (en) * | 1967-03-03 | 1970-12-29 | Victor Company Of Japan | Commutatorless motor |
DE2156389A1 (en) * | 1970-11-14 | 1972-05-18 | Canon Kk | DC synchronous motor with control device |
US3775648A (en) * | 1971-08-04 | 1973-11-27 | Garrett Corp | Brushless motor control |
FR2266364A1 (en) * | 1974-03-28 | 1975-10-24 | Valroger Pierre De | Self-starting synchronous motor control circuit - has flip-flops controlled at start by LF excitation circuit and then by monitor |
FR2296299A1 (en) * | 1974-12-23 | 1976-07-23 | Ibm | CONTINUOUS CURRENT MOTOR CONTROL CIRCUIT OPERATING AS A SYNCHRONOUS MOTOR |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1224824B (en) * | 1963-08-02 | 1966-09-15 | Siemens Ag | Circuit arrangement for brushless direct current miniature motors |
US3611081A (en) * | 1970-04-06 | 1971-10-05 | Sperry Rand Corp | Counter emf commutated self-starting brushless d.c. motor |
DE2115777B2 (en) * | 1971-04-01 | 1973-04-12 | Gebr. Bühler Nachfolger GmbH, 8500 Nürnberg | COLLECTORLESS DC MOTOR |
US3864615A (en) * | 1971-09-13 | 1975-02-04 | Royal Industries | Electronic programmer for multi-phase motor |
DD97108A1 (en) * | 1972-04-11 | 1973-04-12 |
-
1976
- 1976-02-06 DE DE2604638A patent/DE2604638C3/en not_active Expired
-
1977
- 1977-01-27 FR FR7702242A patent/FR2340642A1/en active Granted
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1068842A (en) * | 1962-10-25 | 1967-05-17 | Matsushita Electric Ind Co Ltd | Synchronous motors |
US3551765A (en) * | 1967-03-03 | 1970-12-29 | Victor Company Of Japan | Commutatorless motor |
DE2156389A1 (en) * | 1970-11-14 | 1972-05-18 | Canon Kk | DC synchronous motor with control device |
US3775648A (en) * | 1971-08-04 | 1973-11-27 | Garrett Corp | Brushless motor control |
FR2266364A1 (en) * | 1974-03-28 | 1975-10-24 | Valroger Pierre De | Self-starting synchronous motor control circuit - has flip-flops controlled at start by LF excitation circuit and then by monitor |
FR2296299A1 (en) * | 1974-12-23 | 1976-07-23 | Ibm | CONTINUOUS CURRENT MOTOR CONTROL CIRCUIT OPERATING AS A SYNCHRONOUS MOTOR |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2404331A1 (en) * | 1977-09-27 | 1979-04-20 | Siemens Ag | CONTINUOUS CURRENT MOTOR WITHOUT COLLECTOR |
EP0222604A2 (en) * | 1985-11-08 | 1987-05-20 | Maghemite Inc. | Starter procedure for permanent magnet motor |
EP0222604A3 (en) * | 1985-11-08 | 1989-03-01 | Maghemite Inc. | Starter procedure for permanent magnet motor |
Also Published As
Publication number | Publication date |
---|---|
FR2340642B1 (en) | 1982-04-16 |
DE2604638A1 (en) | 1977-08-11 |
DE2604638C3 (en) | 1982-03-04 |
DE2604638B2 (en) | 1981-06-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |