Voting model based diagnosis of bridging faults in combinational circuits

A novel algorithm for diagnosing bridging faults in combinational circuits is presented. The voting model is assumed. The diagnosis algorithm guarantees the “object bridging fault” (bridging fault in the circuit being diagnosed) to be in the final fault list. The novelties of the algorithm are: (i) unlike previous algorithms it does not use the full fault dictionary but uses portions of the stuck-at fault dictionary which is computed dynamically; (ii) it enumerates the faults implicitly using a compact data structure; and (iii) fault dropping rules, using stuck-at fault simulation only, are used. The resulting algorithm is both time and space efficient. Experimental evaluation of the algorithm is presented