基于拜占庭故障模式的空天飞行器GNC系统架构研究

GNC System Architecture Research for Aerospace Vehicle Based on Byzantine Failure mode

摘要:

针对空天飞行器对GNC系统的高可靠性需求,开展了基于拜占庭故障模式的GNC系统架构研究,采用四机三总线架构设计方案,通过系统内总线实现输入数据及输出数据多机冗余比对,防止拜占庭故障的发生,提升了系统可靠性,实现了系统自检测和故障的准确定位及隔离,并具有在线故障诊断、故障自修复功能,同时解决了高动态、强干扰环境下系统自主性较差的问题,提升了GNC系统可靠性和容错性;经分析,该系统架构能够满足空天飞行器在轨、再入复杂任务需求。

Abstract:

To meet the high reliability requirement of GNC system for aerospace vehicle (ASV),developing the GNC system architecture research based on the Byzantine failure mode.This architecture is based on four computer processing modules and three MIL-1553B data buses,The comparison of the IO data through the system bus based on multi-computers redundancy.Byzantine fault is avoided,and the system reliability is improved.The GNC system has the function of fault detection ,fault location ,fault isolation and fault self-healing.The architecture solves the high dynamic and strong interference environment problems of the poor autonomy system.In addition,the system architechture can meet On-orbit and Reentry requirements.