The purpose of this paper is to present a novel algorithm to handle space environment induced errors in the space-robot software.

    Design/methodology/approach

    The radiations in outer space may induce transient errors in micro-processors, this phenomena will make software behavior unpredictable, and the existing software fault tolerance methods have been restricted in non-multi-threaded operation systems, non-component-based frameworks, non-cacheable micro-processors, non-distributed environments, etc. A software model for space-robot software, based on adaptive redundancy, is developed and a corresponding run-time error detection algorithm is presented in this paper. Software was monitored and run-time transient error would be detected and processed.

    Findings

    Experiments indicate that this method introduces about 30-35 percent time overhead and about 200-230 percent memory overhead. It also increases the fault detection rate to 84-92.5 percent. Moreover, the model and algorithm is effective in a realistic space robot environment.

    Originality/value

    A redundancy model is developed and an error detection algorithm is introduced in this paper. Experiments demonstrate it can provide space-robot software with good protection against the radiation induced transient errors.


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    Titel :

    Run-time error detection of space-robot based on adaptive redundancy


    Beteiligte:
    Gao, Xing (Autor:in) / Liao, Ming-Hong (Autor:in) / Wu, Xiang-Hu (Autor:in) / Li, Chao-Yong (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2009-01-23


    Format / Umfang :

    5 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





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