基于CAN通讯的汽车底盘系统集成控制

Integrated control of vehicle chassis system based on controller area network

摘要: 为了提高汽车整车综合动力学性能，针对汽车在转向制动工况下转向与制动系统动力学耦合关系，在对汽车底盘系统动力学耦合分析基础上，设计了ABS及EPS两子系统控制器和决策层集成控制器，对底盘系统进行分层集成控制。同时有针对性地设计了基于CAN的底盘集成控制系统的通讯系统。基于Matlab/simulink仿真和实车试验结果表明，汽车的俯仰角、侧倾角、横摆角速度反应时间和纵向减速度均有不同程度的改善，分别降低了30.53%、15.03%、25.64%、34.61%，表明设计的CAN通讯的集成系统工作稳定，抗干扰能力强，提出的集成控制策略正确可行，在保证转向轻便性的前提下，提高了系统制动稳定性。

Abstract: In order to improve overall performance of vehicle, Based on model establishment of steering system and braking system, conflict of the two systems in the process of power assisted steering and braking was analyzed, controller area network was carried out to integrated control system, then integrated control logic of the systems was put forward. The result of simulation proved that the integrated control logic we put forward was correct and feasible. It can not only apparently improve the performance of braking stability, but making steering portable as well.