A Novel Fault Diagnostic Method Based on Node-Voltage Vector Ambiguity Sets

A novel fault diagnostic method based on node-voltage vector ambiguity sets for analog circuits is presented in this paper. The method uses a sinusoidal stimulus instead of a dc-based stimulus. It employs steady-state node-voltage responses on observable nodes under different fault conditions to est...

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Bibliographic Details
Published in:IEEE transactions on instrumentation and measurement 2014-08, Vol.63 (8), p.1957-1965
Main Author: Zhihua, Li
Format: Article
Language:English
Subjects:
Ambiguity
Analog circuits
Circuit design
Circuit faults
Diagnostic systems
Fault diagnosis
fuzzy sets
Instrumentation
linear circuits
Mathematical analysis
measurement
Oscilloscopes
Programming
Steady-state
Strategy
Vectors
Vectors (mathematics)
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Summary:A novel fault diagnostic method based on node-voltage vector ambiguity sets for analog circuits is presented in this paper. The method uses a sinusoidal stimulus instead of a dc-based stimulus. It employs steady-state node-voltage responses on observable nodes under different fault conditions to establish node-voltage vector ambiguity sets for fault diagnosis. An ellipse-based measurement solution to measure node-voltage vectors is also described. A frequency selection algorithm for a sinusoidal stimulus is introduced. A fault diagnostic example based on the node-voltage vector ambiguity sets is presented. Finally, a programming strategy to extend the method to large-scale analogue circuit designs is described.
ISSN:0018-9456
1557-9662
DOI:10.1109/TIM.2014.2302236