Object-Oriented Dynamic Bayesian Network-Templates for Modelling Mechatronic Systems

The object-oriented paradigm is a new but proven technology for modelling mechatronics, i.e., multidisciplinary modelling. For many reasons the object-oriented approach is very much desirable also for qualitative models in system design, diagnosis or verification. Bayesian networks are a very robust technology for qualitative probabilistic modelling. In this paper we present a first approach in using the Bayesian networks modelling technique with the quantitative object-oriented method. Analogous to Modelica, an object-oriented modelling language, we constructed a Bayesian network library for modelling hydraulic systems. These Bayesian networks are called Object Oriented Dynamic Bayes Nets (OODBNs). Our method is easily transferable to any other physical domain or logic. In this contribution our motivation and the construction steps are described. Simulation results for a sample hydraulic system are given. Held at Semmering, Austria, 2-4 May 2002. The original document contains color images. This article is from ADA405380 Thirteenth International Workshop on Principles of Diagnosis (DX-2002)