Research Article

Fault Diagnosis of Gearbox in Multiple Conditions Based on Fine-Grained Classification CNN Algorithm

Figure 1

The comparison between the traditional CNN fault diagnosis method and the fine-grained fault diagnosis algorithm. (a, b) The framework of the traditional CNN methods. “fc” denotes the fully connected layer. “C1”∼“C4” denote 1∼4 gear position, respectively. (c) The fine-grained fault diagnosis algorithm with two-level hierarchy label structure.