Research on Degradation State Recognition of Planetary Gear Based on Multiscale Information Dimension of SSD and CNN

Table 2

Basic parameters of CNN.

Layers	Input layer	Convolution layer 1	Polling layer 2	Convolution layer 3	Polling layer 4	Full connection layer	Classifier layer
Feature matrix number	1	6	6	12	12	1	1
Feature matrix size	9 × 50	7 × 48	7 × 8	5 × 6	5 × 2	1 × 120	1 × 9
Kernel size		3 × 3	1 × 6	3 × 3	1 × 3