基于FlexRay总线线控转向稳定性研究  

Research on the stability of the steer-by-wire based on FlexRay bus

作　　者：段建民[1] 邓华林[1] 于涌川[1] 

机构地区：[1]北京工业大学电子信息与控制工程学院,北京100124

出　　处：《工业仪表与自动化装置》2011年第5期3-6,共4页Industrial Instrumentation & Automation

基　　金：北京市教委科技创新平台资助项目(05002011200701)

摘　　要：线控转向装置取消了转向盘和车轮的机械连接,是未来汽车转向的发展趋势。该文采用魔术轮胎的非线性整车动力学模型,研究了车速、路面附着系数以及前轮转向对汽车稳定性的影响;在此基础上,提出了基于横摆角速度和侧向加速度联合控制的控制策略,提高了汽车的稳定性;建立了基于FlexRay通信的线控转向系统,并建立了dSPACE硬件在环实验验证控制策略。Steer-by-wire is a trend in the development of automobile steering system,which removes the mechanical connection between the steering wheel and the front wheel.The nonlinear vehicle dynamic model based on Pacejka tire model is established,and the influences of speed,road adhesion coefficient and front wheel angle on the vehicle stability are studied.On this basis,a yaw rate and lateral acceleration feedback control strategy is proposed,and the stability of the car is improved.The steer-by-wire system based on FlexRay bus is built,in order to verify the control strategy,a hardware-in-the-loop system based on dSPACE is also built.

关 键 词：线控转向 转向稳定性 联合控制 FLEXRAY DSPACE 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]