Preliminary Studies in Haptic Displays for Rear-End Collision Avoidance Systemand Adaptive Cruise Control System Applications

摘要

One potential means of providing collision avoidance warnings to the driver arethrough haptic displays, i.e., displays that are 'felt'. In this report, various setting studies were conducted. The first study was conducted to determine the display parameter settings of a mono-pulse braking display. The second study examined the effects of active steering vibration amplitude, frequency, and duration on display detectability and appropriateness ratings. The results indicated that, over the ranges of vibration frequency, torque amplitude, and duration used, all of the displays were essentially equivalent in terms of driver response. Based on these results, it was suggested that active steering displays be reserved for future collision avoidance system integration for those situations that most likely require steering maneuvers for achieving a desirable outcome, i.e., for hazards in the lateral axis. The third study sought to determine how drivers in a car following situation would react to mono-pulse braking display under two different simulated rear-end collision avoidance warning scenarios. The results suggest guarded optimism that mono-pulse braking displays might be of use in rear-end collision avoidance applications.