汽车最速操纵稳定性评价指标研究

The Study on Evaluation Index of Vehicle Minimum Time Handling and Stability

针对目前汽车操纵稳定性评价指标中没有考虑速度因素,提出一种综合考虑驾驶员忙碌程度、侧翻、侧滑、速度4个因素的最速操纵稳定性单项评价指标表达式和综合评价指标表达式。通过ADAMS/Car仿真分析,得到了最速操纵稳定性单项评价指标数值和综合评价指标数值。比较了不同初始车速下汽车完成双移线试验的操纵稳定性综合评价指标仿真结果。结果表明,各单项评价指标数值和综合评价指标数值随时间增大而增大,汽车最速操纵稳定性综合评价指标数值随初始车速的增大而增大,即汽车操纵稳定性变差。该评价指标能够为高速行驶的汽车操纵稳定性评价分析和设计提供参考。

According to the fact that the current evaluation index for vehicle handling and stability didn＇ t consider the speed factor, considering four factors of the driver＇ s busy, roll, sideslip, speed, the single factor evaluation index expressions and comprehensive evaluation index expression of the minimum time handling and stability were proposed. Through ADAMS/Car simulation analysis, the single factor evaluation index values and comprehensive evaluation index value of the minimum time handling and stability were got. The comprehensive evaluation index simulation results of the minimum time handling and stability were compared under different initial speed of the vehicle to complete double lane change test. The results showed that the single factor evaluation index values and comprehensive evaluation index value increased with time, comprehensive evaluation index value of the vehicle minimum time handling and stability increased with the initial speed of the vehicle, that was to say, the handling and stability of the vehicle deteriorated. The evaluation indexes can provide some reference value on analysis and design of the handling and stability of vehicle at high speed.