Abstract:

Faulttolerant techniques can provide high reliability for onboard computers

running in the outer space, the current multinode onboard systems are designed as a master

slave structure, which focuses on the strategy of faulttolerance  in the master node and

hereby contains a hidden danger. A parallel faulttolerant computer system with a distributed

framework is proposed in this paper. Based on the framework, the computing nodes and fault

tolerant units are designed and some novel faulttolerant strategies are introduced. Our work

can serve as an important guideline for the development of the related projects.

Key words: faulttolerance;onboard computer;distributed system