Personalized active collision avoidance trajectory planning and variable time domain control integrating driver...

Driver assistance systems play an important role in enhancing vehicle active safety. However, most of the existing driver assistance systems overlook the impact of driver characteristics on control performance, making it difficult to optimize the intervention strength of the controller for different drivers to achieve optimal performance. This paper proposed a novel vehicle active collision avoidance control strategy considering driver characteristics. By adjusting the time domain parameters of the model predictive control (MPC), collision avoidance assistance can be more effectively tailored to different types of drivers. Firstly, the collected lane-changing and collision avoidance data of 10 drivers with varying levels of experience were analyzed and preprocessed. Based on this analysis, a comprehensive index of collision avoidance characteristics was established that integrated trajectory tracking ability and driver burden, enabling the derivation of the collision avoidance characteristic curve representing the driver's preference and habit was obtained. Secondly, a sixth-order polynomial trajectory planning method considering driver characteristics was proposed. This method was optimized under vehicle stability and driver matching constraints to generate personalized collision avoidance trajectories for different drivers. The proposed comprehensive index and personalized collision avoidance trajectory were incorporated into the active collision avoidance control system, and a personalized time-variable domain MPC controller was designed. Test results based on a driver-in-the-loop bench demonstrate that the proposed personalized MPC could better match diverse driving characteristics, enhance the driver's trajectory tracking ability in the process of collision avoidance, reduce the driving workload, thereby improving overall driving safety and comfort.