基于三机仲裁算法的高可靠推进控制系统设计  

Design of Highly Reliable Propulsion Control System Based on Three-CPU Arbitration Algorithm

作　　者：仇存凯 朱紫涵 姜海洋 张晓慧 赵飞 QIU Cunkai;ZHU Zihan;JIANG Haiyang;ZHANG Xiaohui;ZHAO Fei(Shanghai Aerospace Control Technology Institute,Shanghai 201109,China;Shanghai Inertial Engineering Research Center,Shanghai 201109,China)

机构地区：[1]上海航天控制技术研究所,上海201109 [2]上海惯性工程技术研究中心,上海201109

出　　处：《上海航天（中英文）》2022年第S02期144-149,177,共7页Aerospace Shanghai（Chinese&English）

摘　　要：推进控制系统作为空间站的重要组成部分,其实现的轨道控制和姿态调整功能是空间站正常在轨运行的关键。为避免太空中诸如单粒子效应等不利因素对推进功能的影响,保证推进控制系统正确执行推进指令,对系统中央处理器(CPU)模块进行三机冗余,采用三机仲裁算法对三机CPU进行表决,并通过仿真验证了三机仲裁算法可有效屏蔽一机故障,显著提升了系统的容错能力。基于马尔科夫链对系统可靠性进行计算分析,结果表明:采用三机冗余设计的推进控制系统,其CPU模块平均无故障时间增加83.3%,极大提高了系统的可靠性。As an important part of the space station,the propulsion control system realizes the functions of orbit control and attitude adjustment,which are the key to the normal in-obit operation of the space station.In order to avoid the influence of unfavorable factors such as single event effect on the propulsion function in space and ensure that the propulsion system correctly executes the propulsion instructions,the three-CPU redundancy for the CPU module is implemented,and the three-CPU arbitration algorithm is adopted to vote on the three-CPU.By simulating,it is verified that the three-CPU arbitration algorithm can effectively shield the failure of one CPU,which significantly improves the fault tolerance of the system.Finally,based on the Markov chain,the reliability of the system is calculated and analyzed.The results show that the mean time to failure of the CPU module is increased by 83.3%with the three-CPU redundancy design of the propulsion control system,which greatly improves the reliability of the system.

关 键 词：冗余 三机仲裁 容错能力 平均无故障时间 可靠性 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计] TP273[自动化与计算机技术—检测技术与自动化装置]