摘要
为了提高纳卫星星载计算机系统的可靠性,减少体积、质量及功耗等多方面因素的影响,文章提出了一种软硬件结合的低成本容错设计方法。将星载计算机硬件采用双机冗余冷备份方案,通过现场可编程门阵列(FPGA)对故障处理器进行仲裁切换;软件容错通过错误检测与纠正(EDAC)信息容错技术的实现,对星载计算机整体程序进行纠错检错,以对抗单粒子翻转事件。结果表明:该方法能够对星载计算机系统进行有效的故障切换处理,并降低单粒子事件的不良影响,可以在纳卫星系统中推广应用。
The reliability design of the Nano-satellite has been restricted by volume,weight and power consumption.In order to improve the reliability of the computer system and reduce the influence of the above factors,a new low-cost method of combining software and hardware is presented in this paper.The system uses FPGA as an arbitrator to switch to the backup processor in case of failures.Fault-tolerant software is realized by software fault tolerance technology of the error detection and correction,to fight against single event upsets.Experimental analysis shows that the method can effectively handle failover for onboard computer system,reduce the adverse effects of single events,and can be widely applied to the system of Nano-satellite.
出处
《航天器工程》
北大核心
2016年第2期52-57,共6页
Spacecraft Engineering
基金
教育部科技发展中心博士点基金(20133219120030)
关键词
纳卫星
双机冗余
仲裁器
错误检测与纠正
Nano-satellite
dual-computer redundancy
arbitrator
error detection and correction
