Mathematical Problems in Engineering / 2019 / Article / Fig 18

Research Article

Applications of Fractional Lower Order Frequency Spectrum Technologies to Bearing Fault Analysis

Figure 18

Frequency spectrum estimations of the bearing outer race fault signal in DE employing the conventional frequency spectrum ((a) Blackman-Tukey method; (b) Periodogram method; (c) Welch covariation method; (d) AR model method; (e) ARMA model method).

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