Bearing Fault Diagnosis Based on Multilayer Domain Adaptation

Table 1

Detailed information of the ResNet-18 structure.

Layer name	Output size	Channels × kernel size
Input	3 × 224 × 224	—
Conv1	64 × 112 × 112	64 × 7 × 7, stride = 2
BN, ReLu	64 × 112 × 112	—
Max pool	64 × 56 × 56	64 × 3 × 3, stride = 2
Block 1: Conv2_x	256 × 56 × 56
Block 2: Conv3_x	512 × 28 × 28
Block 3: Conv4_x	1024 × 14 × 14
Block 4: Conv5_x	2048 × 7 × 7
ReLu	2048 × 7 × 7	—
Average pool	2048×1	2048 × 7 × 7
FC, softmax	1000	—