EP 1048774 A3 20010207 - Method and device for detecting unbalance in a rotor driven by a brushless electric motor
Title (en)
Method and device for detecting unbalance in a rotor driven by a brushless electric motor
Title (de)
Verfahren und Vorrichtung zur Detektion von Unwuchten bei einem durch einen bürstenlosen Elektromotor angetriebenen Rotor
Title (fr)
Procédé et dispositif pour détecter le balourd d'un rotor entrainé par un moteur électrique sans balais
Publication
Application
Priority
DE 19918331 A 19990422
Abstract (en)
[origin: EP1048774A2] A measuring device registers the rotation speeed (n) and the imbalance of the rotor. When a minimum speed of the rotor is exceeded, an electrical parameter of the motor is adjusted. The electrical parameter is preferably the voltage (U) and is altered from its extent set for operation to an extent provid for a measurement in such a way that the slope of the characteristic curve of speed-torsion increases accordingly.
IPC 1-7
IPC 8 full level
D06F 33/48 (2020.01); D06F 34/08 (2020.01); D06F 34/16 (2020.01); D06F 37/20 (2006.01)
CPC (source: EP US)
D06F 33/48 (2020.02 - EP US); D06F 34/08 (2020.02 - EP US); D06F 34/16 (2020.02 - EP US); D06F 2103/26 (2020.02 - EP US); D06F 2103/46 (2020.02 - EP US)
Citation (search report)
- [AD] EP 0565157 A1 19931013 - PHILIPS PATENTVERWALTUNG [DE], et al
- [A] US 5543698 A 19960806 - TAO JINGHAN [US], et al
- [A] EP 0349798 A2 19900110 - MIELE & CIE [DE]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1048774 A2 20001102; EP 1048774 A3 20010207; EP 1048774 B1 20040317; AT E262064 T1 20040415; DE 19918331 A1 20001026; DE 50005643 D1 20040422; ES 2218022 T3 20041116
DOCDB simple family (application)
EP 00108260 A 20000414; AT 00108260 T 20000414; DE 19918331 A 19990422; DE 50005643 T 20000414; ES 00108260 T 20000414