Mathematical Problems in Engineering / 2019 / Article / Fig 16

Research Article

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

Figure 16

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

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