Multi-axle trucks are prone to rollover in their driving due to its giant size, larger mass and higher gravity center. Here, the rollover model of multi-axle trucks was studied. A 3-DOF nonlinear rollover model for them was built considering characteristics of multi-axis steering, tire nonlinearity and suspension nonlinearity. Real vehicle tests were conducted to verify the correctness of the model. Effects of the main nonlinear parameters in the model on the vehicle’s dynamic responses were studied based on the nonlinear model. The results showed that the lateral leaning stiffness of tire has little effect on the vehicle attitudes within a certain range; the rigidity of hydro-pneumatic spring of suspension has a significant influence on the vehicle roll angle, while it has little effect on the lateral acceleration of the vehicle.
[1] National Highway Traffic Safety Administration. Traffic Safety Facts 2000: A Compilation of Motor Vehicle Crash Data from the Fatality Analysis Reporting System and the General Estimates System[C]. US Department of Transportation, 2001.
[2] Kim H J, Park Y P. Investigation of robust roll motion control considering varying speed and actuator dy-namics [J]. Mechatronics, 2004, 14(1): 35-54.
[3] Zhu B, Piao Q, Zhao J, et al. Integrated chassis control for vehicle rollover prevention with neural network time-to-rollover warning metrics[J]. Advances in Mechanical Engineering, 2016, 8(2): 1687814016632679.
[4] YU Z, LI J, DAI F, et al. Anti-Rollover Control Based on Fuzzy Differential Braking for Heavy Duty Commercial Vehicle [J]. 2016.
[5] 赵健, 郭俐彤, 朱冰, 等. 基于神经网络和侧翻时间算法的轻型汽车侧翻预警[J]. 吉林大学学报(工), 2012, 42(5):1083-1088.
Zhao Jian, Guo Li-tong, Zhu Bing, Etc. Rollover warning for light vehicles based on NN-TTR algorithm [J]. Journal of Jilin University(Engineering and Technology Edition)，2012，42(5):1083-1088.
[6] 岑达希. 基于主动转向与差动制动的汽车防侧翻控制研究[D]. 杭州: 浙江大学, 2011.
Cen Da-xi. The Simulation Research of Vehicle Rollover Prevention Based on AFS and DYC [D]. Hangzhou: Zhejiang University, 2011.
[7] 朱天军. 基于改进TTR重型车辆侧翻预警及多目标稳定性控制算法研究 [D]. 吉林：吉林大学, 2010.
Zhu Tian-jun. Research on improved TTR Rollover Warning and Muti-objective Stability Control Algorithm of Heavy Duty vehicle [D]. Jilin: Jilin University, 2010.
[8] 金智林. 运动型多功能汽车侧翻稳定性及防侧翻控制 [D]. 南京: 南京航空航天大学, 2008.
Jin Zhi-lin. Rollover Stability and Anti-Roll Control for Sport Utilitu Vehicles [D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2008.
[9] 王健,余贵珍,张为,丁能根. 基于滑模观测和模糊推理的车辆侧翻实时预警技术[J]. 农业机械学报,2010,(06):1-6.
Wang Jian, Yu Gui-zhen, Zhang Wei, Ding Neng-gen. Real-time Rollover Prediction for Vehicle Based on Principles of Sliding Mode and Fuzzy Inference System[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,(06):1-6.
[10] Takano S, Nagai M, Taniguchi T, et al. Study on a vehicle dynamics model for improving roll stability [J]. JSAE review, 2003, 24(2): 149-156.
[11] Kim H J. Robust roll motion control of a vehicle using integrated control strategy [J]. Control Engineering Practice, 2011, 19(8): 820-827.
