JPS5679223A - Detecting system for instantaneous torque of ac motor - Google Patents
Detecting system for instantaneous torque of ac motorInfo
- Publication number
- JPS5679223A JPS5679223A JP15526979A JP15526979A JPS5679223A JP S5679223 A JPS5679223 A JP S5679223A JP 15526979 A JP15526979 A JP 15526979A JP 15526979 A JP15526979 A JP 15526979A JP S5679223 A JPS5679223 A JP S5679223A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- voltage
- multipliers
- subtracted
- currents
- 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.)
- Granted
Links
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
PURPOSE: To precisely detect the torque output by a system wherein currents and voltages for three phases are detected, primary and secondary voltage are calculated therefrom and then the secondary voltage is divided by the rotational speed of the motor.
CONSTITUTION: In a current and voltage detecting circuit 100, currents are taken out through current transformers 4W6 and resistors 8W10 in the form of a voltage signal, and voltage signals are obtained through a three phase transformer. The value obtained by multipliers 21W23 and a square function generator 20 is subtracted from primary input P1 comprising respective outputs from multipliers 24W26 in an addition/subtraction unit 30. Commutation surges are subtracted in subtraction units 17W19 after passing through high harmonics pass filters 14W16. In a divider 31, secondary input given as output from the addition/subtraction unit 30 is divided by the rotational speed of a motor 2 so as to obtain instantaneous torque.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54155269A JPS605888B2 (en) | 1979-11-30 | 1979-11-30 | Instantaneous torque detection method for AC motors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54155269A JPS605888B2 (en) | 1979-11-30 | 1979-11-30 | Instantaneous torque detection method for AC motors |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5679223A true JPS5679223A (en) | 1981-06-29 |
JPS605888B2 JPS605888B2 (en) | 1985-02-14 |
Family
ID=15602209
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54155269A Expired JPS605888B2 (en) | 1979-11-30 | 1979-11-30 | Instantaneous torque detection method for AC motors |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS605888B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19843134A1 (en) * | 1998-09-21 | 2000-03-30 | Siemens Ag | Method and device for determining the torque of an induction machine |
US9668608B2 (en) | 2010-01-21 | 2017-06-06 | Nestec S.A. | Beverage machine with removable liquid supply reservoir |
US11284738B2 (en) | 2015-11-11 | 2022-03-29 | Societe Des Produits Nestle S.A. | Easy connection of a liquid tank to a beverage machine |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01137284U (en) * | 1988-03-08 | 1989-09-20 |
-
1979
- 1979-11-30 JP JP54155269A patent/JPS605888B2/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19843134A1 (en) * | 1998-09-21 | 2000-03-30 | Siemens Ag | Method and device for determining the torque of an induction machine |
US6594592B1 (en) | 1998-09-21 | 2003-07-15 | Siemens Aktiengesellschaft | Method and device for determining the torque of an induction machine |
US9668608B2 (en) | 2010-01-21 | 2017-06-06 | Nestec S.A. | Beverage machine with removable liquid supply reservoir |
US11284738B2 (en) | 2015-11-11 | 2022-03-29 | Societe Des Produits Nestle S.A. | Easy connection of a liquid tank to a beverage machine |
Also Published As
Publication number | Publication date |
---|---|
JPS605888B2 (en) | 1985-02-14 |
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