Regulating Flow Graph Based Qualitative Simulation System
Yun Wang · Jisuanji fangzhen · 2010
Aiming at the problem that qualitative simulation is inefficient in complex systems,the qualitative simulation system of regulating flow graph was proposed based on Entity Grammar Systems.The negative feedback loop in the system can be effectively truncated by using a special five-value quantity space.The indetermination of the out put states can be reduced by a two-level filtering system,including rule filter and observed variable filter.The qualitative simulation of the systems in multi-dimensional space can be realized with the mapping from variables to different zones in multi-dimension space.The application of the method on CSTR process indicated that the system can be used for prediction of the interruption transmission pathways and fault diagnosis,which provides a new method for qualitative simulation of complex systems.