Simulation of combinational circuits for fault diagnosis
Article Abstract:
Simulation techniques are discussed to build test patterns to diagnose hardware faults in digital circuits. Only combinational circuits without redundant wires or undetectable faults are considered. All faults are assumed to be either stuck-at-type faults or bridge-faults. An algorithm is presented to build test patterns, based on the circuit structure. The set of tests obtained from this algorithm is shown to have the diagnostic resolution to diagnose all the stuck-at type multiple faults and bridge-faults in the circuit. The simulation program accepts the circuit description as an input. It will store the details of the circuit in data structures that will enable the program to traverse both to the primary inputs and to the primary outputs from any wire. It is illustrated how the simulation program builds the test patterns, finds the fault ranges of each test and finally builds the fault dictionary of the circuit. A theory is presented to prove the completeness of the diagnostic resolution of the obtained test-set. (Reprinted by permission of the publisher.)
Publication Name: SIMULATION
Subject: Engineering and manufacturing industries
ISSN: 0037-5497
Year: 1993
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Object-oriented design of output analysis tools for simulation languages
Article Abstract:
Contrary to the importance given to simulation modeling, output analysis has seen little implementation effort. Most of the simulation systems and programs have very primitive forms of output analysis facilities. This might result in either statistically insignificant results, if the analyst does not have correct assumptions about the system and uses a very simple output analysis method, or it can discourage the analyst from using the methods because it will be very hard to use them without ready computer help. This paper analyzes the output analysis methods in literature and reports ways to include them in simulation environments. A generic object-oriented design for output analysis methods is also described. A critical comparison of object-oriented and traditional methods is included. (Reprinted by permission of the publisher.)
Publication Name: SIMULATION
Subject: Engineering and manufacturing industries
ISSN: 0037-5497
Year: 1993
User Contributions:
Comment about this article or add new information about this topic:
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