Name
Abstract | ||
|---|---|---|
We describe a computer-aided approach to automatic fault isolation in active analog filters which enhances the design-for-test (DFT) methodology proposed by Soma (1990). His primary concern was in increased controllability and observability while the fault isolation procedure was sketched only in general terms. We operationalize tionalize and extend the DFT methodology by using CLP(R) to model analog circuits and by a model-based diagnosis approach to implement a diagnostic algorithm. CLP(R) is a logic programming language which combines symbolic and numeric computation. The diagnostic algorithm uses different DFT test modes and results of voltage measurements for different frequencies and computes a set of suspected components. Ranking of suspected components is based on a measure of (normalized) standard deviations from predicted mean values of component parameters. The diagnosis is performed incrementally, in each step reducing the set of potential candidates for the detected fault. Case studies show encouraging results in isolation of soft faults of a given low-pass biquad filter. |
Year | DOI | Venue |
|---|---|---|
1993 | 10.1007/BF00972157 | Journal of Electronic Testing: Theory and Applications - Joint special issue on analog and mixed-signal testing |
Keywords | Field | DocType |
Programming Language,Logic Programming,Test Mode,Isolation Procedure,Diagnostic Algorithm | Design for testing,Digital biquad filter,Observability,Analogue electronics,Controllability,Computer science,Fault detection and isolation,CLP(R),Algorithm,Real-time computing,Electronic engineering,Analogue filter | Journal |
Volume | Issue | Citations |
4 | 4 | 5 |
PageRank | References | Authors |
0.56 | 8 | 4 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| F. Novak | 1 | 110 | 21.81 |
| Igor Mozetic | 2 | 608 | 198.93 |
| Marina Santo-Zarnik | 3 | 37 | 5.78 |
| A. Biasizzo | 4 | 52 | 8.08 |