Patent ID: 6202009
Filing Date: 2001-03-13
Classification: B60T

Abstract:
A method for detecting a signal fault in a motion sensor for a motor vehicle, the method comprising:providing a lateral acceleration signal for the motor vehicle;determining a first estimated value for road bank angle based on the lateral acceleration signal and at least one additional non-yaw rate vehicle motion signal;providing a yaw rate signal for the motor vehicle;determining a second estimated value for road bank angle based on the yaw rate signal and at least one additional non-lateral acceleration vehicle motion signal;determining a first maximum estimated value based on the first estimated value;determining a second maximum estimated value based on the second estimated value;calculating a first threshold based on the first maximum estimated value;calculating a second threshold based on the second maximum estimated value;comparing whether the first estimated value exceeds the second threshold, and if so, indicating a lateral acceleration signal fault; andcomparing whether the second estimated value exceeds the first threshold, and if so, indicating a yaw rate signal fault.