Incipient Gearbox Fault Diagnosis Based on the Reverse State Transformation of the Chaotic Duffing Oscillator and Sampling Integral Technology

<div>The first feature of Hu moment invariants detecting method on Duffing system transformation from chaos state to large-scale state.</div>

Mathematical Problems in Engineering

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Figure 4: Incipient Gearbox Fault Diagnosis Based on the Reverse State Transformation of the Chaotic Duffing Oscillator and Sampling Integral Technology 

Figure 4 | Incipient Gearbox Fault Diagnosis Based on the Reverse State Transformation of the Chaotic Duffing Oscillator and Sampling Integral Technology 