Abstract: In the deep space exploration mission, on-board computers (OBC) for satellite control systems have more new requirements, such as intelligence, adaptability and self-determination capability. The state of arts of OBCs’ fault-tolerance methods is introduced. An intelligent fault-tolerance method called evolvable hardware (EHW) fault-tolerance used in the fault-tolerance design of OBCs is presented. Three architectures to implement EHW fault-tolerance, which are parallel architecture, serial architecture and serial architecture with fault detection, are brought forward. Moreover, analysis and comparison are made among those architectures. Finally, a simulation validation platform is implemented so that the feasibility and fault-tolerance capability of serial architecture has been validated.

Key words: fault-tolerance, intelligence, evolvable hardware , OBC