Mathematical Problems in Engineering / 2018 / Article / Fig 4

Research Article

Research on Fault Evolution Feature Extraction and Identification of Sun Gear Cracks in Planetary Gearbox Based on Volterra High-Order Kernel Generalized Frequency Response Graphic Analysis

Figure 4

Second-order kernel responses of the real system.
(a) 3D diagram of amplitude-frequency response curve of Volterra second-order
(b) 3D diagram of phase-frequency response curve of Volterra second-order

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