Now the fault diagnosis of mechatronic systems generally has these characteristics, such as changeful operating conditions, serious signal coupling of noise and fault, and typical fault small samples. Based on multi-scale wavelet transform, extended rough neighborhood and the classification of support vector machine (SVM), a more effective method of mechatronic systems fault diagnosis was proposed. Firstly, the vibration signal was decomposed to each energy band according to frequency doubling and crossover o…
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