MODELLING IN BOND GRAPH OF SYSTEMS WITH MULTI-TIME-SCALE

摘要

A bond graph model of a three-time scale system is presented. The original system is decomposed into 'slow', 'fast 1' and 'fast 2' (faster than fast 1) subsystems. Reduced models that determine the quasi-steady state model are obtained. By removing the fast dynamics assigning a derivative causality and maintaining an integral causality assignment, reduced models are obtained. This reduction is done in two parts: first removing the fast 2 dynamics and then fast 1 dynamics. Finally, the proposed methodology is applied to an example.