GB1225636A - - Google Patents
Info
- Publication number
- GB1225636A GB1225636A GB1225636DA GB1225636A GB 1225636 A GB1225636 A GB 1225636A GB 1225636D A GB1225636D A GB 1225636DA GB 1225636 A GB1225636 A GB 1225636A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- switch
- amplifier
- output
- feedback path
- 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
- H02P7/2855—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 whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value
Abstract
1,225,636. Correspondence control systems. RANK ORGANISATION Ltd. May 14, 1969 [May 16, 1968], No.23343/68. Heading GIN. [Also in Division G3] In a servosystem, in which it is necessary to measure the speed of a motor, the motor itself is switched to serve as a tachometer generator. In an automatic speed control system the motor 10 is connected alternately to the output of an amplifier 12 or a feedback path 22-23 by a change over switch 13. The switch operates continuously which may or may not be determined by the supply frequency. The output of the motor 10 when serving as a tachogenerator is compared with a desired speed signal 11, the error signal controlling the input to the amplifier 12. The latter may include thyratrons or thyristors, phase controlled by the error signal; the switch may then connect the motor to the supply during conducting half cycles and as a generator during non-conducting half cycles of the thyristor. The arrangement may be used with either A. C. or D. C. motors. In a modification, Fig.2 (not shown) to avoid switching heavy currents a two-pole switch is used, one pole being in the feedback path and the other disconnecting the output stages of the amplifier.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2334368 | 1968-05-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1225636A true GB1225636A (en) | 1971-03-17 |
Family
ID=10194106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1225636D Expired GB1225636A (en) | 1968-05-16 | 1968-05-16 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1225636A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2945952A1 (en) * | 1979-11-14 | 1981-05-27 | Leybold-Heraeus GmbH, 5000 Köln | Turbo-molecular vacuum pump rotor revolution rate determn. - is by counting residual armature magnetism induced coil voltage frequency |
| WO2006107503A1 (en) * | 2005-03-31 | 2006-10-12 | Wayne-Dalton Corp. | Electric motor control circuit having reduced electromagnetic interference emissions |
-
1968
- 1968-05-16 GB GB1225636D patent/GB1225636A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2945952A1 (en) * | 1979-11-14 | 1981-05-27 | Leybold-Heraeus GmbH, 5000 Köln | Turbo-molecular vacuum pump rotor revolution rate determn. - is by counting residual armature magnetism induced coil voltage frequency |
| WO2006107503A1 (en) * | 2005-03-31 | 2006-10-12 | Wayne-Dalton Corp. | Electric motor control circuit having reduced electromagnetic interference emissions |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4319170A (en) | Motor control method and system | |
| GB1385239A (en) | Current limiting control for an electric power system | |
| GB1324339A (en) | Direct current control circuit | |
| GB1362849A (en) | Static power conversion ciruit | |
| GB1449177A (en) | Servo system and an ac motor controlled thereby | |
| GB1225636A (en) | ||
| GB1358292A (en) | Industrial process control system for operations with long time constants | |
| GB1060550A (en) | Electrical circuit for controlling the polarity and magnitude of a load current | |
| GB1043225A (en) | Improvements in or relating to speed control systems for electric motors | |
| GB1092760A (en) | Variable voltage-controlled frequency generator | |
| ES350219A1 (en) | Motor control system | |
| GB1354845A (en) | Control or regulating equipment for an electric motor | |
| GB1153280A (en) | Speed Control System for DC Motors | |
| US3319145A (en) | Device for the contactless reversal of currents in electrical motor drive coils | |
| GB1450078A (en) | Method of and a device for reducing the influence of backlash in the drive of a machine tool | |
| US3281633A (en) | Lowering speed control for a.-g. hoist | |
| GB1122470A (en) | Improvements relating to a motor speed control circuit arrangement | |
| GB1055971A (en) | Improvements in or relating to centrifuges | |
| GB1342445A (en) | Reactive power corrector device | |
| SE7409874L (en) | ||
| GB1415172A (en) | Ac motor control circuits | |
| SU467444A1 (en) | Device to control the bridge inverter | |
| SU811470A1 (en) | Dc electric drive | |
| GB1424776A (en) | Reversing switch | |
| GB1469244A (en) | Switching arrangement for controlling direct current motors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |