摘要
为了解决燃料电池城市客车中安全性和可靠性问题,从车辆通信系统和整车控制器两个方面进行容错设计。本文设计并实现具有两条独立的CAN通道容错CAN节点,利用了CAN规范中的故障界定机制实现通道间的有效切换。整车控制器硬件设计采用两个微控制器,设计相应软件使其具有“失效安全”的能力。针对输入驾驶信号和部件信息,整车控制器进行故障诊断和处理,增强了整车控制器自身的故障诊断能力。最后,整车容错系统在整车控制器测试平台进行硬件在环仿真。试验验证了容错设计的有效性。
In order to solve the problems of security and reliability in a fuel cell city bus, we complete the fault-tolerant design for both communication system and vehicle control unit are considered. As for the communication system, a fault-tolerant CAN node with double communication channels is proposed. And the vehicle control unit has 2 sub-units, and the corresponding software makes itself ＂fail-safe＂, which also diagnoses and deals with the drive signal and the information of the components, so as to enhance the fault-tolerant ability. The simulation shows that the design of fault diagnosis is effective and workable.
出处
《自动化技术与应用》
2006年第9期12-16,共5页
Techniques of Automation and Applications
基金
国家"八六三"计划电动汽车重在专项基金资助项目(2003AA501100)
