Date of Publication :23rd March 2018
Abstract: The cost of sensory technology including camera and radar has encouraged the outspreading of advanced driver assistance systems (ADAS) into modern vehicles. ADAS systems can function beyond the limits of stability control, using both longitudinal and lateral autonomous operation.Lane-keeping aid (LKA) and Adaptive cruise control and are the pinnacles of ADAS technology and both driving effort and unintended lane-drifts have been demonstrated. The current paper compares the latest Volvo approach and a design strategy for driver steering override specific to LKA systems. The driver steering override theme evaluates the interaction of the driver with the vehicle and modulates the level of intervention accordingly. Both strategies quantify activation of the driver by means of torque steering and information on road or vehicle.The results show that the override strategy has a decisive influence on the advantages of the LKA, thus depicting the need for careful design and rigorous testing. ACC and LKA plays main role in ADAS development and demonstrated a related reduction in driving effort and unintended lane-drifts. A shared control framework for the automatic steering control override for drivers is proposed. This framework formulates the transfer of control between driver and system as a constrained problem of optimization which is solved online by a predictive controller model.
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