EP 1397691 A1 20040317 - DEVICE FOR GENERATION OF A SIGNAL DEPENDENT ON ROTATIONAL SPEED FOR AN ELECTRIC MOTOR, IN PARTICULAR FOR AN ELECTRONICALLY-COMMUTATED D.C. MOTOR
Title (en)
DEVICE FOR GENERATION OF A SIGNAL DEPENDENT ON ROTATIONAL SPEED FOR AN ELECTRIC MOTOR, IN PARTICULAR FOR AN ELECTRONICALLY-COMMUTATED D.C. MOTOR
Title (de)
VORRICHTUNG ZUR ERZEUGUNG EINES DREHZAHLABHÄNGIGEN SIGNALS FÜR EINEN ELEKTROMOTOR, INSBESONDERE FÜR EINEN ELEKTRONISCH KOMMUTIERTEN GLEICHSTROMMOTOR
Title (fr)
DISPOSITIF PERMETTANT DE GENERER UN SIGNAL DEPENDANT DE LA VITESSE DE ROTATION POUR UN MOTEUR ELECTRIQUE, EN PARTICULIER POUR UN MOTEUR A COURANT CONTINU A COMMUTATION ELECTRONIQUE
Publication
Application
Priority
- DE 10130130 A 20010622
- EP 0204604 W 20020425
Abstract (en)
[origin: WO03001216A1] The invention relates to a device for generation of a signal dependent on rotational speed, or a tachogenerator, comprising several magnet elements of alternating polarity, arranged as a distribution around the circumference of the rotor shaft. The magnet elements are preferably arranged in the form of a magnet ring, the sections of which display alternating magnetic polarity and which is retained on a support fixed to the rotor shaft. Said tachogenerator comprises at least one coil, parallel to the axis, arranged at an axial separation from the magnet elements on a further support device. The magnets and coils are placed relative to each other and may rotate relative to each other in such a manner as to induce a speed-dependent signal in the coils. According to the invention, a signal shift device is provided which superimposes a DC voltage on the signal induced in the coil to generate a voltage-shifted signal. Said voltage is preferably a positive voltage, in order to lift the speed-dependent signal into a positive voltage range.
IPC 1-7
IPC 8 full level
G01P 3/48 (2006.01); G01P 3/487 (2006.01); G01P 3/489 (2006.01); H02K 3/50 (2006.01); H02K 5/173 (2006.01); H02K 5/22 (2006.01); H02K 11/33 (2016.01); H02K 29/12 (2006.01)
CPC (source: EP US)
G01P 3/4802 (2013.01 - EP US); G01P 3/487 (2013.01 - EP US); G01P 3/489 (2013.01 - EP US); H02K 3/50 (2013.01 - EP US); H02K 5/1732 (2013.01 - EP US); H02K 5/225 (2013.01 - EP US); H02K 11/33 (2016.01 - EP US); H02K 29/12 (2013.01 - EP US); H02K 2203/03 (2013.01 - EP US)
Citation (search report)
See references of WO 03001216A1
Citation (examination)
- US 4527108 A 19850702 - ENDA TOYOAKI [JP]
- US 3831071 A 19740820 - MITSUI Y
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 03001216 A1 20030103; CN 1266479 C 20060726; CN 1518666 A 20040804; DE 10130130 A1 20030116; DE 10130130 B4 20070920; EP 1397691 A1 20040317; JP 2004537048 A 20041209; US 2004232873 A1 20041125; US 6998813 B2 20060214
DOCDB simple family (application)
EP 0204604 W 20020425; CN 02812474 A 20020425; DE 10130130 A 20010622; EP 02745263 A 20020425; JP 2003507560 A 20020425; US 47885804 A 20040608