The Digital Dynamic and Control Simulation Modeling of Space Craft Based on Modelica

Space craft engineering is a complex unmanned system with large scale, and there are couplings among the subsystems, so modeling and simulation in every development stage is necessary. In order to study how to achieve spacecraft mulit-discipline modeling and simulation quickly, using Modelica to modle the key equipments of subsystems, and accomplish the Modelica model libraries, refining a modeling method. On base of the modeling method, simulating the early partial elimination. This modeling method could be used to verify the correctness of early programs of unmanned system.