Driver Steering Override Strategies for Steering based Active Safety Systems
نویسندگان
چکیده
The decreasing cost of sensory technologies including camera and radar has facilitated the outspread of advanced driver assistance (ADAS) systems into modern vehicles. ADAS systems can operate beyond the scope of stability control, by employing autonomous intervention in both longitudinal and lateral direction. Adaptive cruise control and lanekeeping aid (LKA) are the pinnacles of ADAS technology and have proven to reduce both driving effort and unintended lane-drifts. The current paper compares Volvo’s current and a concept driver steering override strategy applicable to LKA systems. The driver steering override theme evaluates the driver’s interaction with the vehicle and modulates accordingly the level of intervention. Both strategies quantify the driver’s activation by means of steering torque and road/vehicle information. Three different scenarios of lane drifting have been simulated; the results show that the override strategy has a decisive influence on the LKA benefits, depicting therefore the need for careful design and rigorous testing.
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