A New Modeling Method of Satellite Fault Diagnosis Based on the Qualitative/Quantitative Hybrid Model

For conquering the shortcomings of conventional qualitative or quantitative fault diagnosis methods for the satellite control system and seeking the new mechanism of combining the qualitative and quantitative method,a new modeling scheme with the qualitative simulation(QSIM) and the parity space method mixed is proposed.The method achieves the organic combination of the qualitative and quantitative information based on the fuzzy logic.The qualitative/quantitative hybrid model can integrate the system information comprehensively,and then realize the efficient,accurate and rapid fault diagnosis for the satellite control system.Simulation results show that the method is efficient and feasible.