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Analysis and methodology for multiple-fault diagnosis

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4 Author(s)
Zhiyuan Wang ; Dept. of Electr. & Comput. Eng., Univ. of California, Santa Barbara, CA, USA ; Marek-Sadowska, M. ; Tsai, K.-H. ; Rajski, J.

In this paper, we propose a multiple-fault-diagnosis methodology based on the analysis of failing patterns and the structure of diagnosed circuits. We do not consider the multiple-fault behavior explicitly, but rather partition the failing outputs and use an incremental simulation-based technique to diagnose failures one at a time. Our methodology can be further improved by selecting appropriate diagnostic test patterns. The n-detection tests allow us to apply a simple single-fault-based diagnostic algorithm, and yet achieve good diagnosability for multiple faults. Experimental results demonstrate that our technique is highly efficient and effective. It has an approximately linear time complexity with respect to the fault multiplicity and achieves a high diagnostic resolution for multiple faults. Real manufactured industrial chips affected by multiple faults can be diagnosed in minutes of central processing unit (CPU) time.

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Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on  (Volume:25 ,  Issue: 3 )