This paper discusses a concept for enhanced active safety by introducing a driver warning system based on vehicle dynamics\nthat predicts a potential loss of control condition prior to stability control activation. This real-time warning algorithm builds\non available technologies such as the Electronic Stability Control (ESC). The driver warning system computes several indices based\non yaw rate, side-slip velocity, and vehicle understeer using ESC sensor suite. An arbitrator block arbitrates between the different\nindices and determines the status index of the driving vehicle.The status index is compared to predetermined stability levels which\ncorrespond to high and low stability levels. If the index exceeds the high stability level, a warning signal (haptic, acoustic, or visual)\nis issued to alert the driver of a potential loss of control and ESC activation. This alert will remain in effect until the index is less\nthan the low stability level at which time the warning signal will be terminated. A vehicle speed advisory algorithm is integrated\nwith the warning algorithm to provide a desired vehicle speed of a vehicle traveling on a curve. Simulation results and vehicle tests\nwere conducted to illustrate the effectiveness of the warning algorithm.
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