Title :
Analogue fault detectability comparison between power supply current and output voltage magnitude and phase spectrum components
Author :
Papakostas, D.K. ; Hatzopoulos, A.A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Aristotle Univ. of Thessaloniki, Greece
fDate :
4/15/2004 12:00:00 AM
Abstract :
A method using magnitude and phase spectrum components for fault detection of catastrophic and parametric faults is presented. A procedure is developed, discrimination factors are defined and their values are adjusted to include circuit parameter deviations. Comparative results from linear and nonlinear configurations of operational amplifier circuits are given, showing a significant increase in fault detectability over a previous method and also an improvement in fault coverage by the use of the power supply current against the output voltage signal.
Keywords :
Monte Carlo methods; failure analysis; fault diagnosis; operational amplifiers; power supply circuits; analogue fault detection; catastrophic faults; circuit parameter; discrimination factors; linear configurations; nonlinear configurations; operational amplifier circuits; output voltage magnitude; output voltage signal; parametric faults; phase spectrum components; power supply current;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20040334
