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<title>AAS 98-209</title><body BGCOLOR="ffffff"> <h2>AAS 98-209</h2> <h2>NEW METHODOLOGY FOR SIMULATION VALIDATION AND MODEL MODIFICATION</h2> <h4>Li, Xiaolong; Tang, Shuo; Guan, Xiaodong - Northwestern Polytechnical University, P. R. China</h4> <h2> Abstract </h2> In this paper a new method to combine the matching measured flight response, simulation validation and model modification is introduced. The differences between the test data of the system and simulation results are considered. The simulation model error are supposed to be reflected through the control variable. The concept of Error Data Base (EDB) is introduced. The optimal method is used to obtain the EDB. The criterion of validation for the simulation model is introduced and the model modification is made through the EDB. The numerical example is made to verify the method. <P><A HREF="http://www.space-flight.org/AAS_meetings/1998_winter/sessions.html">Back</A>