Engine state monitoring method based on vibration and neural network technology
A neural network and vibration monitoring technology, applied in the direction of internal combustion engine testing, etc., can solve problems such as inability to accurately judge the running state of the engine, and achieve the effect of reducing the difficulty of layout
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[0017] The engine state monitoring method based on vibration and neural network technology of the present invention includes the step of extracting the vibration characteristic parameters of the engine and the step of utilizing neural network technology to analyze the engine state, wherein:
[0018] The extraction of the characteristic parameters of the engine vibration is to select the test points of the engine vibration monitoring test at the measuring points near the cylinder head cover, the cylinder block and the side wall of the crankcase.
[0019] The use of neural network technology for engine state analysis is to use neural network technology to perform nonlinear fitting, map complex nonlinear relationships with faults, and obtain a comprehensive evaluation model based on fuzzy reasoning synthesis rules.
[0020] Its specific steps include:
[0021] 1) Obtain the signal under no fault and fault state under specific working conditions, extract and normalize the fault sy...
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