1996-02-01

Object Oriented Modelling Approaches to Variable Granularity: Application to a Diesel Engine 960875

.This paper presents an original approach to modelling and simulating complex systems. The overall application used to illustrate this approach consists in modelling and simulating the transient behaviour of a diesel engine. Conventional modelling and simulation stages for small projects are presented. As a larger project needs additional tools, we have developed an original approach using two other models. We first introduced a new compound model which is a modelling approach where many white and/or black boxes are linked together. In the second stages of a project - implementation of the simulator - we introduced another Object-Oriented model. Variable granularity modelling and simulation are also presented in this project. Such a concept is a suitable for a project starting from scratch. At first the subsystems are not well understood; but as we start to understand them better, different kinds of models can be introduced. This paper concludes with some information on their implementation and future lines of investigation.

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