GB1245183A - Speed control device for electric motors - Google Patents
Speed control device for electric motorsInfo
- Publication number
- GB1245183A GB1245183A GB02580/69A GB1258069A GB1245183A GB 1245183 A GB1245183 A GB 1245183A GB 02580/69 A GB02580/69 A GB 02580/69A GB 1258069 A GB1258069 A GB 1258069A GB 1245183 A GB1245183 A GB 1245183A
- Authority
- GB
- United Kingdom
- Prior art keywords
- speed
- amplifier
- chopper
- speed control
- march
- 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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/22—Controlling the speed digitally using a reference oscillator, a speed proportional pulse rate feedback and a digital comparator
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Direct Current Motors (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
1,245,183. Automatic speed control. GOERZ ELECTRO G.m.b.H. March 10, 1969 [March 11, 1968], No. 12580/69. Heading G3R. For regulating the speed of an electric motor a device 4 generates a square wave signal, of frequency proportional to the speed, which is applied to a D.C. amplifier 6 of the kind comprising a chopper, an A. C. amplifier, and a synchronous rectifier, the output of the amplifier being used to control the supply to the motor. Effectively the frequency and phase of the speed signal from contacts 4 is compared to those of the chopper supply 11 and a direct voltage is produced which is indicative of the error whenever the phase of the speed signal differs from a predetermined relationship with that of the chopper. The speed signals may be produced by a photo-cell or light dependent resistor in known manner.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT236768A AT283517B (en) | 1968-03-11 | 1968-03-11 | Pulse speed control device of an electric motor |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1245183A true GB1245183A (en) | 1971-09-08 |
Family
ID=3533039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB02580/69A Expired GB1245183A (en) | 1968-03-11 | 1969-03-10 | Speed control device for electric motors |
Country Status (3)
Country | Link |
---|---|
AT (1) | AT283517B (en) |
DE (1) | DE1910919A1 (en) |
GB (1) | GB1245183A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4062225A (en) * | 1976-08-23 | 1977-12-13 | Nl Industries, Inc. | Rotational viscometer and plastometer |
-
1968
- 1968-03-11 AT AT236768A patent/AT283517B/en not_active IP Right Cessation
-
1969
- 1969-03-04 DE DE19691910919 patent/DE1910919A1/en active Pending
- 1969-03-10 GB GB02580/69A patent/GB1245183A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4062225A (en) * | 1976-08-23 | 1977-12-13 | Nl Industries, Inc. | Rotational viscometer and plastometer |
Also Published As
Publication number | Publication date |
---|---|
DE1910919A1 (en) | 1969-10-16 |
AT283517B (en) | 1970-08-10 |
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