SU70981A1 - Device for measuring the speed of a dc motor - Google Patents
Device for measuring the speed of a dc motorInfo
- Publication number
- SU70981A1 SU70981A1 SU1703A SU351722A SU70981A1 SU 70981 A1 SU70981 A1 SU 70981A1 SU 1703 A SU1703 A SU 1703A SU 351722 A SU351722 A SU 351722A SU 70981 A1 SU70981 A1 SU 70981A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- speed
- motor
- voltage
- measuring
- bridge
- Prior art date
Links
Landscapes
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Description
Дл изл ерени скорости вращени приводных электродвигателей в системах Леонарда обычно примен ютс тахометрические генераторы с вольтметрами. При низких скорост х тахометрические генераторы дают большие пульсации напр жени и работают неудовлетворительно. Кроме того, установка тахометрических генераторов св зана с определенными затруднени ми.Tachometric generators with voltmeters are commonly used to measure the rotational speed of drive motors in Leonard systems. At low speeds, tachometer generators produce high voltage pulsations and do not work satisfactorily. In addition, the installation of tachometer generators is associated with certain difficulties.
В тех случа х, когда регулирование скорости производитс только . до основной скорости, т. е. регулированием э. д. с. генератора при посто нном магнитном потоке электродвигател , измерение скорости может быть произведено по схеме равноплечего моста, исключающей недостатки схем с тахометрическими генераторами.In cases where speed regulation is performed only. to the main speed, i.e. regulation by e. d. generator with a constant magnetic flux of an electric motor, the speed measurement can be made according to the equal-arm bridge scheme, which eliminates the drawbacks of circuits with tachometric generators.
В предлагаемом устройстве, как и в известных устройствах этого рода, скорость двигател определ етс по разности подводимого к двигателю напр жени и напр жени , пропорционального току в коре, при помощи электроизмерительного прибора типа амперметра, включенного в схему равноплечего моста, на одну из диагоналей которого подаетс напр жение двигател . Сущность же изобретени заключаетс в том, что указанный прибор А включен в одно из плеч моста, на вторую диагональ которого подаетс напр жение, снимаемое с шунта в цепи питани двигател Д.In the proposed device, as in the known devices of this kind, the motor speed is determined by the difference between the voltage and voltage supplied to the motor, proportional to the current in the cortex, using an electrical measuring device of the ammeter type, included in the equal-arm bridge circuit engine voltage is applied. The essence of the invention is that the specified device A is included in one of the arms of the bridge, on the second diagonal of which voltage is applied to the voltage removed from the shunt in the power supply circuit of the engine D.
На чертеже изображена принципиальна схема включени предлагаемого устройства, где - сопротивление плеч моста; - сопротивление в цепи двигател ; /,„ - сопротивление шунта.The drawing shows a schematic diagram of the inclusion of the proposed device, where is the resistance of the shoulders of the bridge; - resistance in the engine circuit; /, „- shunt resistance.
Предмет изобретени Subject invention
Устройство дл измерени скорости двигателей посто нного тока по разности подводимого к двигателю напр жени и напр жени , пропорционального току в коре, при помощи электроизмерительного прибора типа амперметра, включенного в схемуDevice for measuring the speed of dc motors by the difference between the voltage supplied to the motor and the voltage proportional to the current in the core, using an electrical measuring instrument of the ammeter type included in the circuit
205 равноплечего , на одну из диагоналей которого подаетс напр жение питани двигател , о т л и ч а ющ е е с тем, что указанный при«ч205 of the equal arm, on one of the diagonals of which the engine supply voltage is applied, which is indicated with "h
I .. оор включен в одно из плеч моста, на вторую диагональ которого подаетс напр жение, снимаемое с шунта в цепи питани двигател .I .. OOR is included in one of the shoulders of the bridge, on the second diagonal of which is applied the voltage removed from the shunt in the motor power supply circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1703A SU70981A1 (en) | 1947-02-01 | 1947-02-01 | Device for measuring the speed of a dc motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1703A SU70981A1 (en) | 1947-02-01 | 1947-02-01 | Device for measuring the speed of a dc motor |
Publications (1)
Publication Number | Publication Date |
---|---|
SU70981A1 true SU70981A1 (en) | 1947-11-30 |
Family
ID=48248323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1703A SU70981A1 (en) | 1947-02-01 | 1947-02-01 | Device for measuring the speed of a dc motor |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU70981A1 (en) |
-
1947
- 1947-02-01 SU SU1703A patent/SU70981A1/en active
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