Therefore, when very few cameras are used, aliasing effects are difficult to avoid around the boundaries of objects. Thus, the width of the spectral support is under control when the truncation window is sufficiently large—that is, if the occlusion is not significant. Next, a spatially varying...
In order to verify the feasibility of the proposed method, a simulated signal is constructed [37], [38]. The sampling frequency fs is 12800 Hz, and the number of sampling points is 4096. As shown in Eq. (24), the simulated bearing fault signal consists of five parts: one fault impact...
The decimation process was implemented with a cascade multi-stage approach to avoid spectral aliasing at the sample rate conversion stage. The startup transient current of the stator was measured for the line-fed IM and ASD-fed IM as shown in Figure 4. It should be noted that when the IM...
This method can completely avoid the iterative operation, regardless of whether the cycle is the integer and the length of the filter on the impact of noise reduction. The multistage transmission gearbox has wide frequency distribution and a large number of fault cycles. The noise reduction effect...