车辆弯道行驶侧倾稳定性分析与侧翻预警研究

Roll Stability and Early-warning of Vehicle Driving in the Curve

车辆在弯道上高速行驶易发生侧翻事故,为此研究了车辆弯道防侧翻预警算法.首先分析车辆弯道行驶的侧倾稳定性,进而导出车辆弯道行驶侧向加速度极限方程,结合弯道半径等道路信息计算车辆进入弯道的安全车速.通过硬件在环驾驶模拟试验台对该预警算法进行验证,结果表明:该算法能对驶入弯道且具有侧翻风险的车辆进行预警,以有效避免侧翻,同时提高弯道车辆通行效率.

Vehicle has a high risk of rollover when it drives at a high speed in a curve. A rollover early- warning algorithm of vehicle in a curve was studied, which firstly analyzed the vehicle stability and then established vehicle lateral acceleration limit equation. Combining with the known road information, for example, the radius of the curve, safe speed and early-warning speed could be calculated before entering the curve. The algorithm had been verified by experiments on a driving simulator with hardware-in-the- loop. Results show that the algorithm can succeed in providing early-warning for vehicle which has the risk of rollover, thus avoiding rollover and improving the traffic efficiency in the curve.