A novel approach to delay-fault diagnosis

• Published in: [1992] Proceedings 29th ACM/IEEE Design Automation Conference pp. 357 - 360
• Main Authors: Girard, P., Landrault, C., Pravossoudovitch, S.
• Format: Conference Proceeding
• Language: English
• Published: IEEE Comput. Soc. Press 1992
• Subjects: Circuit faults; Circuit simulation; Circuit testing; Electrical fault detection; Fault detection; Fault diagnosis; Logic; Propagation delay; Robots; Timing
• ISBN: 9780818628221; 0818628227
• ISSN: 0738-100X
• DOI: 10.1109/DAC.1992.227778

The authors discuss possibilities of delay fault diagnosis based on fault simulation. They detail the proposed approach based on critical path tracing. A path tracing process is presented with information provided by a logic simulation. Due to the limitations induced by such a simulation, a reliable approach is described based on a six-valued logic simulation. It requires no delay size based fault models and considers only the fault-free circuit. This method is an alternative to fault simulation based approaches and provides perfectly reliable results. It does not require timing evaluations and can be very accurate.< >