Method for monitoring a vibrating gyroscope
AssigneeSiemens Aktiengesellschaft
InventorsHeinz-Werner Morell, Dietmar Schmid
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Abstract
The invention relates to a method for monitoring a vibrating gyroscope which represents a resonator and forms part of at least one control loop that excites the vibrating gyroscope with its natural frequency by supplying an excitation signal. An output signal can be extracted from the vibrating gyroscope, the excitation signal being derived from said output signal by means of filtering and amplifying. According to the invention, the quality of the resonator is measured. If the measured quality is below a threshold value, an error message is generated.
Claims5
-6. (canceled)
A method for monitoring a vibration gyro which represents a resonator and is part of at least one control loop, the vibration gyro being excited by an excitation signal generated by the at least one control loop at a natural frequency of the vibration gyro, said method comprising the steps of:
- tapping an output signal from which the excitation signal is derived by filtering and amplification;
- inserting an additional phase shift of the excitation signal into the at least one control loop;
- evaluating a Q-factor of the output signal caused by the additional phase shift;
- and
- determining that the Q-factor of the vibration gyro is sufficiently high if the Q-factor is above a threshold value.
Dependencies are inferred from the claim text.