本文应用沃尔什分析对组合网络中多固定故障的检测方法进行了研究.建立了“输入冗余故障”,“增权、减权故障”的概念及其谱系数的可测性条件.讨论了用于故障精简的“故障屏蔽”关系.在此基础上,定义了基本检测特征,研究了多步故障精简的步骤,提出了一种用于内部无扇出,单输出的无冗余组合网络中多固定故障的沃尔什谱特征检测算法. In this paper, Walsh analysis is used to study the detection of multiple fixed faults in a combined network, and the concepts of “input redundancy fault”, “weighted redundancy and reduced power failure” and the testability conditions of its spectral coefficients are discussed. Based on this, the basic detection features are defined, the steps of multi-step fault simplification are studied, and a non-redundant combination for internal fan-out and single output is proposed. Walsh Spectrum Feature Detection Algorithm with Multiple Fixed Faults in Network.