Dynamic Stability of a Driver-vehicle Rollover System with Time Delay
(0) Vehicle rollover,as a fatal accident,has been an important and necessary problem to be solved in vehicle active safety research area.The published researches mainly focused on vehicle modeling,rollover stability analysis,and anti-roll control method,especially on integrated chassis control strategy.However,as a dominant factor in vehicle rollover accident,driver’s operation has not been touched on in current publications.In order to explore the mechanism of vehicle rollover caused by driver’s operation,an extended model of a driver-vehicle closed-loop system,with the time delay of driver’s operation taken into consideration,is established in this paper.From the model,some dynamic characteristics of the driver-vehicle closed-loop system are discussed,including the dynamic stability of the system without time delay using the Routh-Hurwitz criterion,the delay-independent stability of the system based on the generalized Sturm criterion,and the critical time delay when the delay-independent stability condition does not hold.Then the influences of driver’s operation on vehicle rollover stability are simulated in extreme driving conditions by numerical cases for a Sport Utility Vehicle (SUV).Also,the stability regions of vehicle rollover are shown with respect to the parameters of driver’s operation,such as the gain,the reaction time and the time delay.The results of simulation show that the time delay is the most important parameter of driver’s operation to stability of vehicle rollover,and the gain of driver’s operation has different influence on stability of vehicle rollover with different time delay.
vehicle rollover dynamic stability driver-vehicle closed-loop system driver reaction to rollover time delay
Zhilin Jin Jiansheng Weng Jiale Zhang Cuizhen Ma
Department of Vehicle Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
国际会议
南京
英文
1-9
2013-08-20（万方平台首次上网日期，不代表论文的发表时间）