Sparse Signal Representations of Bearing Fault Signals for Exhibiting Bearing Fault Features

Figure 2

The signals obtained by using various morphological operators: (a) the signal filtered by the erosion operator; (b) the signal filtered by the dilation operator; (c) the signal filtered by opening operator; (d) the signal filtered by the closing operator; (e) the signal filtered by the AVG operator; (f) the signal filtered by the DIF operator; (g) the signal filtered by the BTH operator; and (h) the signal filtered by the WTH operator.

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