System and Method for Detecting a Pitch Rate Sensor Fault
First Claim
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1. A method of detecting a pitch rate sensor fault comprising the steps of:
- utilizing a kinematic relationship of a plurality of sensor signals other than a signal from a pitch rate sensor to generate a reference pitch angle;
adjusting a pitch rate sensor signal for a plurality of valid signal biases toward a compensated pitch rate sensor signal;
comparing the reference pitch angle and the compensated pitch rate to identify a suspected pitch rate sensor fault; and
verifying a plurality of predetermined parameters in relation to the suspected pitch rate sensor fault to confirm the suspected pitch rate sensor fault to be an actual fault.
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Abstract
A system and method for detecting a fault in a pitch rate sensor onboard a vehicle. Signals, including a steering wheel angle, a yaw rate, a roll rate, a longitudinal acceleration, a lateral acceleration, and a vehicle speed, are processed in a controller to validate a pitch rate signal. Upon detection of a fault in the pitch rate signal, the system and method will determine a process in which to minimize negative effects of the pitch sensor fault. The system and method will then direct the controller to select a process, such as a direct shutdown, a slow shutdown or replace a signal, in a relevant control system, based on the determination.
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Citations
31 Claims
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1. A method of detecting a pitch rate sensor fault comprising the steps of:
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utilizing a kinematic relationship of a plurality of sensor signals other than a signal from a pitch rate sensor to generate a reference pitch angle; adjusting a pitch rate sensor signal for a plurality of valid signal biases toward a compensated pitch rate sensor signal; comparing the reference pitch angle and the compensated pitch rate to identify a suspected pitch rate sensor fault; and verifying a plurality of predetermined parameters in relation to the suspected pitch rate sensor fault to confirm the suspected pitch rate sensor fault to be an actual fault. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A system for detecting a pitch rate sensor fault comprising:
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a plurality of sensor signals from an active safety control system; a controller for developing a kinematic relationship of the plurality of sensor signals to generate a reference pitch angle, a compensated pitch rate and to compare the reference pitch angle to the compensated pitch rate to identify a suspected pitch rate sensor fault; and a notification signal provided by the controller upon verification of the suspected pitch rate sensor fault to be an actual fault. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification