JPS5587018A - Arithmetic unit for motor torque of induction motor - Google Patents
Arithmetic unit for motor torque of induction motorInfo
- Publication number
- JPS5587018A JPS5587018A JP16055678A JP16055678A JPS5587018A JP S5587018 A JPS5587018 A JP S5587018A JP 16055678 A JP16055678 A JP 16055678A JP 16055678 A JP16055678 A JP 16055678A JP S5587018 A JPS5587018 A JP S5587018A
- Authority
- JP
- Japan
- Prior art keywords
- induction motor
- pulse
- motor
- signal
- frequency
- 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
- Force Measurement Appropriate To Specific Purposes (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
PURPOSE: To make it possible to calculate motor torque easily and precisely by finding the slip factor of an induction motor by measuring a pulse signal proportional to the rotation speed of the induction motor.
CONSTITUTION: Contactless adjacent sensor 9 is provided for rotation detection of rotary shaft 8 of induction motor 7 to generate a pulse signal of a frequency proportional to its rotation speed, and the signal is divided by divider 10. Pulse generating circuit 12 generates a pulse signal of a frequency proportional to a power frequency, and divider 13 divides it. A reference clock pulse generated by high- frequency oscillator 14 is led to gate circuit 15 and on the basis of this reference clock pulse, gating operation between both pulse signals of dividers 10 and 13 is performed. Then, arithmetic is carried out by up-and-down counter 16 and latch circuit 17 to find the slip factor of induction motor 7, and from the result, a signal corresponding to the motor torque can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16055678A JPS5587018A (en) | 1978-12-25 | 1978-12-25 | Arithmetic unit for motor torque of induction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16055678A JPS5587018A (en) | 1978-12-25 | 1978-12-25 | Arithmetic unit for motor torque of induction motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5587018A true JPS5587018A (en) | 1980-07-01 |
Family
ID=15717537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16055678A Pending JPS5587018A (en) | 1978-12-25 | 1978-12-25 | Arithmetic unit for motor torque of induction motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5587018A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01311885A (en) * | 1988-06-07 | 1989-12-15 | Ono Sokki Co Ltd | Slip measuring device for induction motor |
| EP0809095A2 (en) * | 1996-05-24 | 1997-11-26 | Skf Gmbh | Method and device for measuring the output torque of an electric motor |
| EP0833138B1 (en) * | 1996-09-27 | 2003-03-19 | Jouan | Device for determining the type of a rotating equipment, control and regulation system for an associated centrifuge |
-
1978
- 1978-12-25 JP JP16055678A patent/JPS5587018A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01311885A (en) * | 1988-06-07 | 1989-12-15 | Ono Sokki Co Ltd | Slip measuring device for induction motor |
| EP0809095A2 (en) * | 1996-05-24 | 1997-11-26 | Skf Gmbh | Method and device for measuring the output torque of an electric motor |
| EP0809095A3 (en) * | 1996-05-24 | 1997-12-17 | Skf Gmbh | Method and device for measuring the output torque of an electric motor |
| JPH1062274A (en) * | 1996-05-24 | 1998-03-06 | Skf Gmbh | Method and apparatus for measuring driven torque |
| EP0833138B1 (en) * | 1996-09-27 | 2003-03-19 | Jouan | Device for determining the type of a rotating equipment, control and regulation system for an associated centrifuge |
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