Influence of Delay Time on Driving Assistance System during Tire Burst

抄録

In this research, it is aimed for a driver assist system at the time of the tire burst considering a driver behavior. The system is aimed for a realization of the driving support until it stops safely while performing the steering support of the vehicle. For this purpose, this paper deals with an influence of delay time on a driving assistance system for a tire burst. Driver’s tests using CarSim DS under the tire burst situation were performed for an investigation of an influence of delay time on a driving assistance system. In a driving test, a control input is a steering torque. For the control input, the value of the steering torque to keep the lane under the tire burst situation was experimentally determined. By the steering torque, effects of a delay of the steering torque input timing was evaluated. The timing of the input of the steering torque is ‘no delay’, ‘0.3 seconds delay’ and ‘0.5 seconds delay’. The subjects of the driving simulator test were 10 people in their 20s who had a car license. The subjects were instructed to drive at a constant speed of 100 km/h so as not to depart from the lane only by steering without operating the accelerator pedal and brake pedal. The evaluation of the experimental results was performed by the amplitude of the lateral displacement in the time history responses and the questionnaire to the subjects. From the experimental results, the control delay makes the operation feel difficult, and it is necessary to keep the control delay time within 0.3 seconds.