Abstract
We propose an algorithm for qualitative simulation of the large scaled physical systems such as plants. Such systems are often complicated for numerical simulation, thus the qualitative simulation is often used for analysis. We use the qualitative network model and implement a simulation algorithm modified for the qualitative network. This algorithm has three important futures : (1) devision of the propagation into two types, dynamic propagation and static propagations (2) balancing mechanism to avoid the undefined values, (3) rules for keeping consistencies on the network model.
