摘要
为满足浮空器惯性姿态测量系统在高空长航时环境下对CAN通信高可靠性的要求,设计了一种双CAN总线全系统冗余方案。采用两片集成度较高的LPC11C24微控制器,在DSP+FPGA架构的导航计算机上搭建冗余系统,并结合上位机对该系统进行了测试与验证。测试结果表明,该冗余系统通信功能正常。当主CAN出现故障时,从CAN投入运行,有较好的容错性,在不增加成本和空间的前题下,提高了惯性姿态测量系统的可靠性。
In order to improve the CAN communication ability of aerostat inertial attitude measurement system under severe en- vironment, a system method of double-CAN redundant bus is designed. Two LPC11C24 micro-controllers with high integration are used to establish the redundant system based on DSP ＆ FPGA navigation computer. The system＇s function is tested and verified with upper computer. The test result shows that this redundant system performs well. Slave CAN starts working when ever the mas- ter CAN fails. Fault tolerance is stable. The reliability and quality of aerostat inertial attitude measurement system are enhanced without adding cost and space.
出处
《电子技术应用》
北大核心
2013年第7期21-24,27,共5页
Application of Electronic Technique
