JPS5629484A - Load torque detector for induction motor - Google Patents
Load torque detector for induction motorInfo
- Publication number
- JPS5629484A JPS5629484A JP10189379A JP10189379A JPS5629484A JP S5629484 A JPS5629484 A JP S5629484A JP 10189379 A JP10189379 A JP 10189379A JP 10189379 A JP10189379 A JP 10189379A JP S5629484 A JPS5629484 A JP S5629484A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- load torque
- induction motor
- speed
- actual speed
- 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.)
- Pending
Links
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
PURPOSE:To detect the load torque stable over wide speed range by applying a signal obtained by proportionally integrating a deviation signal between a speed instruction signal and an actual speed signal to an ammeter. CONSTITUTION:When the load torque is increased in the induction motor, there occurs a difference between the actual speed signal from a tachometer generator 3 and the speed instruction signal, and a proportional integrating amplifier 5 integrates the signal and produces a signal becoming higher as the time goes. The output signal is added to a frequency signal responsive to the actual speed signal by an adder circuit 10 to obtain a control signal compensated for the slip frequency. When the output of the amplifier 5 is displayed on the ammeter 6, the magnitude of the load torque can be gained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10189379A JPS5629484A (en) | 1979-08-10 | 1979-08-10 | Load torque detector for induction motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10189379A JPS5629484A (en) | 1979-08-10 | 1979-08-10 | Load torque detector for induction motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5629484A true JPS5629484A (en) | 1981-03-24 |
Family
ID=14312597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10189379A Pending JPS5629484A (en) | 1979-08-10 | 1979-08-10 | Load torque detector for induction motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5629484A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6043304A (en) * | 1983-08-19 | 1985-03-07 | 井関農機株式会社 | Direction controller of moving agricultural machine |
-
1979
- 1979-08-10 JP JP10189379A patent/JPS5629484A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6043304A (en) * | 1983-08-19 | 1985-03-07 | 井関農機株式会社 | Direction controller of moving agricultural machine |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS52153034A (en) | Electric air-fuel ratio controlling device | |
GB1297765A (en) | ||
JPS5629484A (en) | Load torque detector for induction motor | |
JPS5425779A (en) | Torque measuring method of electric dynamometers | |
JPS552961A (en) | Arithmetic unit for load torque of motor | |
JPS57141532A (en) | Compensating method for measuring error of tire uniformity machine | |
JPS55166488A (en) | Control device of dc motor | |
GB829204A (en) | Improvements relating to differential speed measurement | |
ES451036A1 (en) | Elevator speed control system | |
JPS5734408A (en) | Direction indicator | |
GB1528740A (en) | Phase modulators | |
JPS56162989A (en) | Speed controlling device for ac motor | |
JPS55157987A (en) | Speed controlling device for ac motor | |
JPS5681098A (en) | Governor control device | |
JPS57142183A (en) | Controlling device for vehicle | |
JPS5250520A (en) | Frequency convertor | |
SU1336191A1 (en) | Method of forming the stabilizing parameter for regulating excitation of synchronous electric machine | |
JPS5546887A (en) | Control device for induction motor | |
JPS5744456A (en) | Method and device for measuring lubricating condition between mold and ingot in continuous casting | |
JPS5675934A (en) | Monitor of operational condition of engine | |
JPS5698384A (en) | Speed control system for motor | |
GB1071980A (en) | Improvements in or relating to processes and circuit arrangements for measuring signal phase distortion | |
JPS54116620A (en) | Control method of induction motor | |
JPS5540117A (en) | Speed controlling method and apparatus for goods production conveyor | |
JPS567035A (en) | Running-resistance detector for car on bench |