CPC G01C 19/5719 (2013.01) [H04L 27/3863 (2013.01)] | 15 Claims |
1. A control circuit for a microelectromechanical system (MEMS) gyroscope sensor having a sensing mass, comprising:
a quadrature error compensation control loop for applying a cancelation force to the sensing mass to cancel quadrature error; and
a self-testing circuit comprising:
open loop circuitry configured to open the quadrature error compensation control loop and apply an additional force to produce a physical displacement of the sensing mass;
a sensing circuit configured to detect a quadrature error due to the physical displacement of the sensing mass in response to the applied additional force; and
a comparison circuit configured to compare the sensed quadrature error to an expected value corresponding to the applied additional force and generate a fault alert if the comparison is not satisfied.
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