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In this paper, PC-KNN is studied on the condition that the data dimension is reduced by PCA. FD-KNN (Fault Detection based on K — Nearest — Neighbor) has been applied in semiconductor manufacturing Fault Detection, it can handle nonlinear and multi modal testing problems that influence the performance of PCA. The computational complexity and higher requirement of time and storage space have become...
Heart sound signal has great value in clinical application, before identifying the components and doing further analysis, removing interference noise is necessary. In order to remove noise from heart sound signal well and be convenient to use, we apply generalized mathematical morphology in handling the signal which contains noise, high-frequency and low-frequency noise could be eliminated by a combination...
The characteristics of the Electric Vehicle (EV) traction motor system are different from the traditional industrial motor system, and the noise source are also different with different conditions. Based on the theory of sound intensity, the experiments of noise source identification of the Electric Vehicle traction motor system are research through the measurement at discrete points firstly. The...
The characteristics of the electric vehicle (EV) traction motor system are different from the traditional industrial motor system, and the noise spectrum characteristics are also distinguished. Based on the theory of sound intensity, the experiments of noise characteristics of the electric vehicle traction motor system are research through the measurement at discrete points firstly. The figure of...
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