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自动故障诊断已成为联机系统修理时间减至最小因而提高利用率的必要因素之一。然而,故障诊断程序和维修字典的准备要求作巨大的努力,而排除故障的成功仍是很有限的。本文提出一种构成逻辑电路的新方法,这种方法可以大大简化包括考虑多重故障在内的诊断过程同时保持诊断高成功率。在诊断的时候,把电路加以变换,使满足指定的连接关系,这种联接关系通过控制称为功能变换部件(FCU)的逻辑元件允许故障信息传输到输出。对于组合电路和时序电路,所提方法的原理、逻辑电路的综合和诊断过程将予以描述。为了证明该原理的可行性而构成的一个实验处理机连同用小计算机NITAC-10诊断的结果也将描述。
Automated troubleshooting has become one of the necessary factors to increase utilization while minimizing on-line system repair time. However, tremendous efforts are being made to prepare the troubleshooting procedures and maintenance dictionaries, and the success of troubleshooting is still limited. This paper presents a new method of constructing a logic circuit that greatly simplifies the diagnostic process including multiple faults while maintaining a high diagnostic success rate. At diagnosis, the circuit is transformed so that the specified connection relationship is satisfied. This connection relationship allows fault information to be transferred to the output by controlling the logic elements known as the Functional Transform Unit (FCU). For the combination of circuit and timing circuit, the principle of the proposed method, logic circuit synthesis and diagnosis process will be described. An experimental processor constructed to demonstrate the feasibility of this principle, along with the results of a diagnostic using a small computer NITAC-10, will also be described.