Unmanned aerial vehicle engine rapid diagnosis method based on grey optimization Bayesian network
A technology of Bayesian network and rapid diagnosis, which is applied in the direction of combustion engine, internal combustion piston engine, design optimization/simulation, etc. It can solve the disadvantage that the Bayesian network model cannot fully and directly display the important information of the diagnostic object, and cannot highlight faults Locate and check the key points and other issues to achieve the effect of enhancing directivity
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[0046] The present invention proposes a fast diagnosis method based on gray optimization Bayesian network. It mainly includes the following steps:
[0047] Step 1. Use the relevant information and knowledge of the equipment to build a fault tree model S1
[0048] 101 According to the relevant information and knowledge of the equipment, select and determine the most undesired event of the system, or specify a fault event for logical analysis, that is, the top event.
[0049] 102 Look for the direct necessary and sufficient cause of the top event, that is, the intermediate event, denoted as E j (j=1,2,...,n), n∈N*. Select appropriate logic gates to connect according to the actual logic relationship of these events.
[0050] 103 Analyze each intermediate event. If the event can be further decomposed, it is decomposed into the intermediate events of the next level, and the appropriate logic gates are selected to connect. Repeat this step until the event can no longer be decom...
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