| 空间多模冗余热备份嵌入式电子系统精确同步算法研究 |
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| 引用本文： | 周新发,赵卫华,肖爱斌,田宇斌.空间多模冗余热备份嵌入式电子系统精确同步算法研究[J].空间控制技术与应用,2013(6):45-48,57. |
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| 作者姓名： | 周新发 赵卫华 肖爱斌 田宇斌 |
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| 作者单位： | 北京控制工程研究所,北京100190 |
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| 基金项目： | 十二五民用航天预先研究资助项目（D020201）. |
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| 摘 要： | 为了使空间嵌入式电子系统冗余的热备份多模之间获得精确时间同步,基于IEEE1588协议,在空间多模冗余热备份嵌入式电子系统的全交织网络基础上,采用FPGA/ASIC技术,结合软件和硬件同步提出了一种精确时间同步算法.该算法既有硬件同步的精度优势,又具有软件同步的成本优势和容错能力,并且时间同步精度可达到百纳秒量级,经过系统仿真验证了此算法的有效性.
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| 关 键 词： | 时间同步 IEEE1588 多模冗余 嵌入式电子系统 |
On Precise Synchronizing Algorithm in Multi-Module Redundancy Embedded Electronic System of Aerospace |
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| ZHOU Xinfa,ZHAO Weihua,XIAO Aibin,TIAN Yubin.On Precise Synchronizing Algorithm in Multi-Module Redundancy Embedded Electronic System of Aerospace[J].Aerospace Contrd and Application,2013(6):45-48,57. |
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| Authors: | ZHOU Xinfa ZHAO Weihua XIAO Aibin TIAN Yubin |
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| Institution: | (Beijing Institute of Control Engineering, Beijing 100190, China) |
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| Abstract: | In order to achieve precise synchronization among multimodule redundancy embedded elec tronic system of aerospace, this paper deals with the time synchronizing algorithm of the hot redundancy systems based on IEEE1588 protocol and FPGA（field programmable gate array）/ASIC（application spe cific integrated circuit） , which combines the software with the hardware. This method can achieve the same precision as the hardware synchronizing and owns the faulttolerant ability. The time synchronization precision of this algorithm is at hundreds of nanoseconds, and the algorithm is validated by system simula tion. |
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| Keywords: | time synchronization IEEE1588 multi-module redundancy embedded electronic system |
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