摘要
对建立的重型车辆8DOF与5DOF实时简化动力学模型进行了比较,优选出了能较好预测未来侧翻危险程度的5DOF模型,进而研究了基于该模型的实时TTR侧翻预警算法和基于预警算法的防侧翻LQR最优主动控制策略。应用差动制动的方法对重型车辆进行了主动侧倾控制,还选取鱼钩等四种转向工况,以TruckSim和MatLab联合仿真来验证预警算法的精度与可靠性。仿真结果表明,基于差动制动的LQR控制方法能有效地降低侧翻指标——横向载荷转移率(LTR),避免侧翻的发生,显著提高了重型车辆的侧倾稳定性。
The models of simplify real-time dynamic for the heavy vehicles was compared,and a 5DOF model of heavy semi-trailer was selected out because it can better predict the future rollover risk.An algorithm of real-time TTR rollover warning based on the model and optimal active control strategies for anti-rollover LQR based on the algorithm were researched.The heavy vehicles were active controlled for rollover with differential braking.Accuracy and reliability of warning algorithms was also verified using TruckSim and MatLab Co-simulation for fishhook etc.steering situation.The results show this method can reduce rollover performance index of Lateral Load Transfer Ratio effectively and avoid occurred rollover and improve the roll stability of heavy vehicles significantly.
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2009年第S2期251-254,共4页
Journal of Jilin University:Engineering and Technology Edition
基金
高等学校博士学科点专项科研基金项目(200801830030)
"863"国家高技术研究发展计划项目(2006AA110104)
关键词
车辆工程
重型车辆
侧翻预警
差动制动
vehicle engineering
heavy vehicles
rollover warning
differential braking
