Health condition monitoring and fault diagnosis with adaptive threshold values for the integrated vehicle stability system

摘要

System and related method for monitoring the condition of sensors in an integrated vehicle improve the - a control system. In one embodiment, the system determines whether a yaw rate sensor, a transverse acceleration sensor or an in - sensor have failed. The system uses a plurality of models, based on the actual sensor measured values estimated values of the outputs of the sensors to produce. There are deviations as the difference between the measured value and each of the estimated values for the specific sensor generates. The deviations are compared with a threshold value, for each deviation in order to determine whether a fault - flag is. The threshold value for the - in the steering angle sensor is an adaptive threshold value, since it has no physical redundancy. If the error - flag for the deviations for each sensor, a specific pattern is advantageous for the sensor output an error.