A multi-level risk assessment method for unmanned aerial vehicle systems under a probabilistic coupling relationship
A risk assessment and UAV technology, applied in the field of UAV, can solve the problems of small amount of UAV flight data, difficulty in UAV system-wide risk assessment, lack of coupling relationship, etc.
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[0050] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and it should be understood that the embodiments described below are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0051] UAV is a complex system integrating mechanical, electrical, hydraulic, etc. It is characterized by a large number of subsystems, and there is a strong coupling between them, with a hierarchical structure. As one of the main methods of product reliability and safety analysis, fault tree can be analyzed from top to bottom strictly according to the hierarchical fault causal logic. The traditional fault tree analysis method does not consider the ambiguity of event occurrence probability and cannot effectively solve the problem of insufficient UAV data. Therefore, the present invention introduces a fuzzy algorithm, and describes the event risk probability of each level o...
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