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The multiple evidence from different information sources of different importance are not equally important when they are combined in fault diagnosis of diesel engine. To calculate and adjust weighting coefficient of multiple evidence, the method of weighted evidence balance based on genetic algorithms is used. First it searches for the optimal weighting coefficients of different evidence using genetic...
The vibrant signal of diesel engine is analyzed by the method of bispectrum, and bispectral feature planes are searched along diagonal and parallel lines of diagonal at certain step in the bispectral modulus field, and the mean breadth value in bispectral feature planes are calculated as signal feature which is capable of describing the fault. The support vector machines is used to diagnose the fault...
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