Compensating a temperature-dependent quadrature-induced zero rate offset for a microelectromechanical gyroscope
A sensor system. The sensor system includes: an analog processing arrangement comprising: a drive circuit which generates an analog drive signal to drive an oscillating element of a microelectromechanical gyroscope; a detection circuit configured to generate analog rotation-rate and quadrature signa...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | A sensor system. The sensor system includes: an analog processing arrangement comprising: a drive circuit which generates an analog drive signal to drive an oscillating element of a microelectromechanical gyroscope; a detection circuit configured to generate analog rotation-rate and quadrature signals from a signal detected by the gyroscope; an analog-to-digital converter(s) configured to convert the analog rotation-rate and quadrature signals into digital rotation-rate and quadrature signals; a compensation circuit, which, in a measurement operating mode of the sensor system, compensates a quadrature effect on the analog quadrature signal using at least one quadrature compensation value; and a digital processing arrangement comprising a digital processing circuit, which, in the measurement operating mode of the sensor system, is configured to compensate a temperature-dependent quadrature-induced zero rate offset ZRO of the digital rotation-rate signal using at least one ZRO compensation value and temperature information. |
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