卫星控制系统的三机容错计算机系统

TMR BASED FAULT-TOLERANT ONBOARD COMPUTER FOR SATELLITE CONTROL SYSTEM

本文讨论了容错计算机的三种容错结构,即D/S(双机变单机)、TMR/J(三模冗余变单机)、以及TMR/D/S(三模冗余变双机再变单机)结构。给出了三种容错结构的可靠性数学模型,对影响可靠性的诸多因素进行了讨论、比较,确定采用TMR/S方案。文中对TMR/S的硬件设置及容错管理程序做了简要介绍。对从事容错设计的工程技术人员有一定参考价值。

In this paper, three fanlt-tolerant structures of a fanlt-tolerantcomputer, or D/S,TMR/S and TMR/D /S, are discussed. Their reliabitlity models are given, such factorseffecting on the releability are analyzed and compared, Finally the TMR/S structure is de-termined, In addition, The hardware configuration and fanlt-tolerant management routines ofthe TMR/S system are described in brief.