Patent ID: 11860125
Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Field: Measurement (Instruments)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A system for detecting wear in an encoder used to sense a wheel speed in a vehicle, the system comprising:
a sensor configured to sense the wheel speed of the vehicle by sensing a magnetic material on the encoder coupled to a wheel of the vehicle;
a noise detection module including a plurality of noise detectors configured to detect noise in a wheel speed signal generated by the sensor;
an estimation module configured to:
estimate a state of health of the encoder based on the noise detected in the wheel speed signal; and
generate an alert in response to the state of health indicating that an amount of wear on the encoder is greater than a predetermined threshold; and

a filter configured to filter the noise in the wheel speed signal and to output a filtered wheel speed signal to a control system controlling stability of the vehicle.