System and method for monitoring a gyroscope
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United States of America Patent
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Aug 18, 2015
Grant Date -
Sep 11, 2014
app pub date -
Mar 8, 2013
filing date -
Mar 8, 2013
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Abstract
Systems and methods are provided for monitoring operation of MEMS gyroscopes (110). A test signal generator (124) is configured to generate and apply a test signal to the rate feedback loop (112) of a MEMS gyroscope (110). A test signal detector (126) is coupled to the quadrature feedback loop (114) of the MEMS gyroscope (110) and is configured to receive a quadrature output signal from the quadrature feedback loop (114). The test signal detector (126) demodulates the quadrature output signal to detect effects of the test signal. Finally, the test signal detector (126) is configured to generate a monitor output indicative of the operation of the sensing device based at least in part on the detected effects of the test signal in the quadrature output signal. Thus, the system is able to provide for the continuous monitoring of the operation of the MEMS gyroscope (110).
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