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本文通过引入时态一致覆盖集的概念，提出一个基于时态推理与覆盖技术的时态覆盖集诊断模型ＴＧＳＣ．ＴＧＳＣ利用模糊集描述有关征兆、故障及相互间关系的时态知识．文中建立了ＴＧＳＣ的基本框架，给出了基于假设图搜索的诊断问题求解方法，并伴以计算示例．
In this paper, by introducing the concept of temporal coherent set, we propose a TGSC based on temporal reasoning and coverage techniques. TGSC uses fuzzy sets to describe temporal knowledge about signs, faults, and inter-relationships. In this paper, the basic framework of TGSC is established, and the solution to the problem of diagnosis based on hypothesis graph search is given, accompanied by calculation examples.