Abstract:

Compared to quantitative modeling technology,qualitative modeling methods can describe the chaos,uncertainty,and unpredictability of complicated systems better.To describe qualitative and quantitative complex systems systematically,qualitative modeling and quantitative modeling are combined.In this paper,a qualitative and quantitative integrated modeling based on theory of modeling and simulation for Multidiscipline Virtual Prototype (COSIM) is proposed.A description of qualitative knowledge and qualitative interface based on belief rules is given,and the formal description of hierarchical model structures of the integrated modeling is stated;a quantitative/qualitative collaborative solution is proposed based on unified dispatch of qualitative reasoning and quantitative calculation in simulation system.Finally,integrated modeling languages are given based on the expansion of the UML modeling language.The validity of the modeling method is verified by designing and realizing the simulation system of torpedo evasion.

Key words: COSIM;combining qualitative and quantitative;belief rules;modeling language