EP 2646774 A1 20131009 - DEVICE FOR MEASURING A YAW RATE
Title (en)
DEVICE FOR MEASURING A YAW RATE
Title (de)
VORRICHTUNG ZUR MESSUNG EINER DREHRATE
Title (fr)
DISPOSITIF DE MESURE D'UN TAUX DE ROTATION
Publication
Application
Priority
- DE 102010053022 A 20101202
- EP 2011006018 W 20111201
Abstract (en)
[origin: WO2012072255A1] The invention relates to a device (1) for measuring a yaw rate, comprising a mechanical yaw rate sensor (2), which has an inert mass which can be set into a primary vibration along a primary axis by means of an excitation device and can be deflected along a secondary axis extending transversely with respect to the primary axis in such a way that when a yaw rate occurs about a sensitive axis extending transversely with respect to the primary axis and transversely with respect to the secondary axis along the secondary axis, said device carries out a secondary vibration excited by the Coriolis force. At least one sensor element (4) is provided in order to detect an amplitude-modulated sensor signal for the secondary vibration. A sigma delta modulator has a low-pass filter (6) connected to the sensor element, a quantiser and a secondary actuator (10) disposed in a feedback path for application to the mass of a force which counteracts the Coriolis force. The secondary actuator (10) is connected to the quantiser via the feedback path in such a way that a feedback signal averaged over time compensates for the deflection of the mass in the direction of the secondary vibration. For shifting of the frequency band of the amplitude-modulated sensor signal in a lower frequency range a first modulation stage (5) is disposed between the sensor element and the low-pass filter (6). A second modulation stage (9) is disposed in the feedback path for reversal of the frequency shift.
IPC 8 full level
G01C 19/5776 (2012.01)
CPC (source: EP US)
G01C 19/56 (2013.01 - US); G01C 19/5776 (2013.01 - EP US)
Citation (search report)
See references of WO 2012072255A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102010053022 A1 20120606; DE 102010053022 B4 20140109; CN 103339471 A 20131002; EP 2646774 A1 20131009; JP 2013545986 A 20131226; US 2014060185 A1 20140306; WO 2012072255 A1 20120607
DOCDB simple family (application)
DE 102010053022 A 20101202; CN 201180066060 A 20111201; EP 11794031 A 20111201; EP 2011006018 W 20111201; JP 2013541247 A 20111201; US 201113990583 A 20111201