Research on the Application of Multi-combined Technologies of Fault Diagnosis on Missile Seekers
Liao Ying · Journal of Astronautics · 2006
In order to improve the fault diagnosis speed and accurate rate,more than two fault diagnosis technologies were adequately combined to exert their advantages and make up the inherent limitation of single fault diagnosis technology.Corresponding reasoning methods of diagnosis were excogitated and formed the so-called multi-combined technologies of fault diagnosis(MCTFD).Four kinds of multi-combined diagnosis methods and their core thought of fault diagnosis were illustrated.As the fault diagnosis of missile Seekers for example,the process to use the three combined method based on fuzzy theory(FT),neural network(NN) and rough sets theory(RST) was described in detail.Then,the result of diagnosis was given.Further,the application of fault diagnosis intelligent expert system(IES) that we had designed based on uncertainty theory(UT) and expert system was introduced.The research work and the example in this paper indicate that MCTFD is of strong universality and robustness,which can improve the diagnosis speed and reduce the rate of inaccurate diagnosis.MCTFD especially suits for fault diagnosis of complex systems and has bigger practical value in engineering.