在使用K故障诊断法时,为提高电路的可诊断性,可以采取诸如增加可及节点,或改变激励点,增加激励和测量次数等办法。本文对这些措施的有效性,以及如何增加可及节点问题进行了详细的讨论,特别着重对比较有效的多激励法进行研究,给出了用多激励法进行诊断时,电路可K故障支路诊断的条件。 When using the K fault diagnosis method, in order to improve the diagnostics of the circuit, measures such as increasing the accessibility of nodes, changing the excitation points, increasing the excitation and the number of measurements can be taken. In this paper, the validity of these measures and how to increase the availability of nodes are discussed in detail, with particular emphasis on the more effective multi-excitation method to study the multi-excitation method is given for diagnosis, the circuit can K fault branch Diagnostic conditions.