Probabilistic Graphical Models for the Diagnosis of Analog Electrical Circuits

We describe an algorithm to build a graphical model—more precisely: a join tree representation of a Markov network—for a steady state analog electrical circuit. This model can be used to do probabilistic diagnosis based on manufacturer supplied information about nominal values of electrical components and their tolerances as well as measurements made on the circuit. Faulty components can be identified by looking for high probabilities for values of characteristic magnitudes that deviate from the nominal values.

• Type: Conference
• Year: 2005
• Where: ECSQARU
• Authors: Christian Borgelt, Rudolf Kruse
• Keywords: Analog Electrical Circuit, ECSQARU 2005, Join Tree Representation, Nominal Values