Abstract
In response to the failure of safety critical functions that unmanned aerial vehicle (UAV) may happen during the flight phases, fault location scheme was proposed based on function hazard analysis results. And methods about automatically generating repairing strategies were put forward according to the pre-configuration items. Firstly, failure knowledge base, which includes the information about function failure, failure effect, and others, was constructed based on the FHA results combing FMEA analyzing results. And then repair strategies for each failure in the knowledge base combing FTA analyzing results was pre-designed. Finally, abductive reasoning method was applied to search for the cause of failure. And repairing strategies were generated accordingly. An assistant tool was developed to simplify the process of building the knowledge base. Interface for the fault locating and repairing strategies generating was also implemented in the tool. An example was proposed to demonstrate the scheme.
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