EP 1403161 A1 20040331 - Method of detecting and controlling the torque of a three-phase motor and device to carry out the method
Title (en)
Method of detecting and controlling the torque of a three-phase motor and device to carry out the method
Title (de)
Verfahren zum Erfassen und Steuern des Drehmoments eines Drehstrommotors und Vorrichtung zur Durchführung des Verfahrens
Title (fr)
Procédé pour détecter et commander un couple d'un moteur triphasé et dispositif pour mettre en oeuvre le procédé
Publication
Application
Priority
IT VI20020205 A 20020926
Abstract (en)
The method involves effecting two detections of torque values delivered by an AC motor (1) at an actuator (3) of the motor. One value is delivered by the motor via processing unit using voltage signals of phase and current signals of two phases as input signals. The torque value is compared with preset torque thresholds. Interruption of electric power to the motor is commanded when the torque value exceed the threshold limits. An independent claim is also included for a torque detection device for a three-phase motor using a control device comprising an incremental bi-directional encoder.
IPC 1-7
IPC 8 full level
B61B 12/10 (2006.01)
CPC (source: EP)
B61B 12/10 (2013.01)
Citation (search report)
- [A] US 4912377 A 19900327 - BERTRAND JEAN-JACQUES [FR]
- [A] US 3789280 A 19740129 - OLDFIELD E
- [A] DE 4229554 A1 19940310 - MILDE FRIEDHELM PROF DR ING [DE]
- [A] GB 1165008 A 19690924 - BRITISH IRON STEEL RESEARCH [GB]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1403161 A1 20040331; EP 1403161 B1 20060816; AT E336411 T1 20060915; DE 60307565 D1 20060928; IT VI20020205 A1 20040327
DOCDB simple family (application)
EP 03021611 A 20030925; AT 03021611 T 20030925; DE 60307565 T 20030925; IT VI20020205 A 20020926