The fault equation of the whole aircraft for the three major types of parameters of gas circuit,oil cir-cuit,and mechanical vibration mainly monitored in the actual work of the aero-engine is established,which im-proves the existing simple method of considering only the monitoring parameters and failure modes of a single-class engine.Under the premise of considering the monitoring parameters and failure modes of the same cat-egory,the coupling relationship between monitoring parameters of different categories and different fault modes is taken into account to achieve effective fusion of multi-source heterogeneous monitoring data and solve the problem of fine processing of differences or contradictions in the results of the same fault mode obtained by moni-toring parameters of multiple engines of the same model or a single engine.A new method to improve the accu-racy of engine fault diagnosis is presented.
维普
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