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Since the fault vibration data collected in the real engineering may be accompanied by noise, traditional diagnostic models are difficult to identify fault categories. To address this problem, a rolling bearing fault diagnosis research method based on channel and spatial reconstruction and progressive convolutional neural networks (CSRP-CNN) was proposed.The model utilized channel and spatial reconstruction convolution(CSConv)to reduce the redundant information of channels and space in fault features, and reduced the complexity and computation to improve the performance; using the convolutional block attention module (CBAM), attention enhancement operation was carried out in the channel and spatial dimensions to make the model pay attention to the important fault feature information; and the progressive convolutional network structure was used in the shallow layer of the network, which would fuse the previous fault feature information with the current input to obtain the richer feature information. The performance of CSRP-CNN was evaluated by two different datasets of Case Western Reserve University (CWRU) and machinery fault simulator magnum (MFS-MG). After the noise and ablation tests, it is verified that CSRP-CNN has strong robustness and the effects of CSConv, CBAM and progressive convolutional neural network (PCNN) on the model noise immunity performance.
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由于在实际工程中采集到的故障振动数据可能会伴随噪声,传统的诊断模型难以识别故障类别,针对此问题,提出一种基于通道和空间重组卷积与渐进式卷积神经网络(Channel and Spatial Reconstruction and Progressive Convolutional Neural Networks, CSRP-CNN)的滚动轴承故障诊断研究方法。所提模型利用通道和空间重组卷积(Channel and Spatial Reconstruction Convolution, CSConv)减少故障特征中通道和空间的冗余信息,降低复杂性和计算量以提高性能;使用卷积注意力模块(Convolutional Block Attention Module, CBAM)在通道和空间维度进行注意力增强操作,使模型关注重要的故障特征信息;在网络浅层采用渐进式卷积网络结构,将之前的故障特征信息与当前的输入进行融合,获取更加丰富的特征信息。通过凯斯西储大学(Case Western Reserve University, CWRU)和机械故障综合模拟试验平台(Machinery Fault Simulator Magnum, MFS-MG)两种不同的数据集对CSRP-CNN进行性能评估。经过噪声测试和消融试验,验证了CSRP-CNN具有较强的鲁棒性,以及CSConv、CBAM和渐进式卷积神经网络(Progressive Convolutional Neural Network, PCNN)对所提模型抗噪性能的影响。
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姚德臣,男,1981年生,山东德州人,教授,硕士研究生导师;主要研究方向为机械系统动力学建模分析、旋转机械监测与诊断的理论与应用研究、轨道交通关键系统状态检测装备研发;E-mail:
yaodechen@bucea.edu.cn。
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周涛,男,2000年生,安徽安庆人,在读硕士研究生;主要研究方向为故障诊断;E-mail:2453932709@qq.com。
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周涛,男,2000年生,安徽安庆人,在读硕士研究生;主要研究方向为故障诊断;E-mail:2453932709@qq.com。
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渐进式卷积神经网络模块, figureFileSmall=3bUxZ9bi+1EOIu6bgCEb9A==, figureFileBig=s7ApX7YlC6Pi/SemTBs1mw==, tableContent=null), ArticleFig(id=1241400387656283006, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=EN, label=Fig.4, caption=
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CSRP-CNN模型整体框架, figureFileSmall=NhxGGX8wt1XxGPxgf1qh+Q==, figureFileBig=mPZ+gQm0PpHfrxlXAVYyvw==, tableContent=null), ArticleFig(id=1241400387878581128, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=EN, label=Fig.5, caption=
Vibration image sample, figureFileSmall=tLmyy3VZFcx2D5dbckPIDQ==, figureFileBig=eVU7NfaJH1ZEjs0KaK5p0Q==, tableContent=null), ArticleFig(id=1241400387991827342, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=CN, label=图5, caption=
振动图像样本, figureFileSmall=tLmyy3VZFcx2D5dbckPIDQ==, figureFileBig=eVU7NfaJH1ZEjs0KaK5p0Q==, tableContent=null), ArticleFig(id=1241400388105073555, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=EN, label=Fig.6, caption=
CWRU test bench, figureFileSmall=BNfsYT7tjclkslAsiXs8Qw==, figureFileBig=fc1OM3q0//u8pPBSFB97cA==, tableContent=null), ArticleFig(id=1241400388226708377, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=CN, label=图6, caption=
CWRU试验台, figureFileSmall=BNfsYT7tjclkslAsiXs8Qw==, figureFileBig=fc1OM3q0//u8pPBSFB97cA==, tableContent=null), ArticleFig(id=1241400388398674847, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=EN, label=Fig.7, caption=
MFS-MG test bench, figureFileSmall=hBYGLpew+UpCo1CkCCQTNA==, figureFileBig=DuuwLRPBC1qS088H4bTnAA==, tableContent=null), ArticleFig(id=1241400388490949543, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=CN, label=图7, caption=
MFS-MG试验台, figureFileSmall=hBYGLpew+UpCo1CkCCQTNA==, figureFileBig=DuuwLRPBC1qS088H4bTnAA==, tableContent=null), ArticleFig(id=1241400388730024880, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=EN, label=Fig.8, caption=
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4种故障轴承, figureFileSmall=pb1++e3yTRs4rC5Tcd98ZA==, figureFileBig=EpaKYIK5uaVY6BGJBfVTbQ==, tableContent=null), ArticleFig(id=1241400388977488823, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=EN, label=Fig.9, caption=
Visualization results of CWRU data set(RSNR = -5 dB), figureFileSmall=wUg2i+E8EUuD2fqvLtMcOQ==, figureFileBig=vXwLNtrOb+NZmrKZ3l2fGQ==, tableContent=null), ArticleFig(id=1241400389086540735, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=CN, label=图9, caption=
CWRU数据集的可视化结果(RSNR = -5 dB), figureFileSmall=wUg2i+E8EUuD2fqvLtMcOQ==, figureFileBig=vXwLNtrOb+NZmrKZ3l2fGQ==, tableContent=null), ArticleFig(id=1241400390613267394, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=EN, label=Fig.10, caption=
Confusion matrix of MFS-MG data set(RSNR=8 dB), figureFileSmall=MhKnGWtMN2FBVJjmcmcpLQ==, figureFileBig=a2bQ/bnTe1AwGiTpIPhQgg==, tableContent=null), ArticleFig(id=1241400390722319303, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=CN, label=图10, caption=
MFS-MG数据集的混淆矩阵(RSNR=8 dB), figureFileSmall=MhKnGWtMN2FBVJjmcmcpLQ==, figureFileBig=a2bQ/bnTe1AwGiTpIPhQgg==, tableContent=null), ArticleFig(id=1241400390806205389, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=EN, label=Fig.11, caption=
ROC curves(RSNR=-2 dB), figureFileSmall=RtFnKZ/0wPBi9n2TsO1Orw==, figureFileBig=pwYVFrip15+I+9uzzWnTJQ==, tableContent=null), ArticleFig(id=1241400390869119952, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=CN, label=图11, caption=
ROC曲线(RSNR=-2 dB), figureFileSmall=RtFnKZ/0wPBi9n2TsO1Orw==, figureFileBig=pwYVFrip15+I+9uzzWnTJQ==, tableContent=null), ArticleFig(id=1241400390927840212, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=EN, label=Fig.12, caption=
Comparison diagram of model accuracy(RSNR=-2 dB), figureFileSmall=uLJTVOoMrxrn23q2sCQs1Q==, figureFileBig=B3NcNF1QMRIjyZcOzj8oZg==, tableContent=null), ArticleFig(id=1241400390994949080, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=CN, label=图12, caption=
模型准确率对比图(RSNR=-2 dB), figureFileSmall=uLJTVOoMrxrn23q2sCQs1Q==, figureFileBig=B3NcNF1QMRIjyZcOzj8oZg==, tableContent=null), ArticleFig(id=1241400391053669337, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=EN, label=Tab.1, caption=
CWRU data set working condition categories
, figureFileSmall=null, figureFileBig=null, tableContent=
转速 Rotational speed/(r/min) | 工况 Working condition/hp | 故障直径 Fault diameter/mils |
|---|
| 1 792 | 0 | 7,14,21 |
| 1 772 | 1 | 7,14,21 |
| 1 750 | 2 | 7,14,21 |
| 1 730 | 3 | 7,14,21 |
), ArticleFig(id=1241400391124972511, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=CN, label=表1, caption=
CWRU数据集工况类别
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转速 Rotational speed/(r/min) | 工况 Working condition/hp | 故障直径 Fault diameter/mils |
|---|
| 1 792 | 0 | 7,14,21 |
| 1 772 | 1 | 7,14,21 |
| 1 750 | 2 | 7,14,21 |
| 1 730 | 3 | 7,14,21 |
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CWRU fault categories
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轴承状态 Bearing condition | 故障直径 Fault diameter/mils | 标签 Label |
|---|
| 健康Health | — | 0 |
内圈 Inner ring | 7 | 1 |
| 14 | 2 |
| 21 | 3 |
外圈 Outer ring | 7 | 4 |
| 14 | 5 |
| 21 | 6 |
滚动体 Rolling element | 7 | 7 |
| 14 | 8 |
| 21 | 9 |
), ArticleFig(id=1241400391317910505, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=CN, label=表2, caption=
CWRU故障类别
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轴承状态 Bearing condition | 故障直径 Fault diameter/mils | 标签 Label |
|---|
| 健康Health | — | 0 |
内圈 Inner ring | 7 | 1 |
| 14 | 2 |
| 21 | 3 |
外圈 Outer ring | 7 | 4 |
| 14 | 5 |
| 21 | 6 |
滚动体 Rolling element | 7 | 7 |
| 14 | 8 |
| 21 | 9 |
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Parameters of ER-12K
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节圆直径 Pitch diameter D/mm | 滚动体个数 Number of rolling element Z | 接触角 Contact angle θ/(°) |
|---|
| 33.477 2 | 8 | 0 |
), ArticleFig(id=1241400391527625716, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=CN, label=表3, caption=
ER-12K参数
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节圆直径 Pitch diameter D/mm | 滚动体个数 Number of rolling element Z | 接触角 Contact angle θ/(°) |
|---|
| 33.477 2 | 8 | 0 |
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Test results at rotational speed 1 792 r/min
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模型 Model | RSNR/dB |
|---|
| -10 | -5 | 0 | 5 | 10 | 无噪声 No noise |
|---|
| CSRP-CNN | 63.2 | 98.3 | 100.0 | 100.0 | 100.0 | 100.0 |
| MobileNetV3 | 14.4 | 33.7 | 82.3 | 97.5 | 99.0 | 99.4 |
| ShuffleNetV2 | 22.1 | 56.7 | 83.2 | 93.5 | 99.0 | 100.0 |
| ResNet18 | 27.2 | 68.9 | 96.6 | 99.6 | 100.0 | 100.0 |
| ResNet34 | 27.1 | 67.3 | 97.4 | 99.5 | 100.0 | 100.0 |
| BR-VGGNet | 38.4 | 93.2 | 99.6 | 100.0 | 100.0 | 100.0 |
), ArticleFig(id=1241400391712175097, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=CN, label=表4, caption=
转速1 792 r/min下的试验结果
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模型 Model | RSNR/dB |
|---|
| -10 | -5 | 0 | 5 | 10 | 无噪声 No noise |
|---|
| CSRP-CNN | 63.2 | 98.3 | 100.0 | 100.0 | 100.0 | 100.0 |
| MobileNetV3 | 14.4 | 33.7 | 82.3 | 97.5 | 99.0 | 99.4 |
| ShuffleNetV2 | 22.1 | 56.7 | 83.2 | 93.5 | 99.0 | 100.0 |
| ResNet18 | 27.2 | 68.9 | 96.6 | 99.6 | 100.0 | 100.0 |
| ResNet34 | 27.1 | 67.3 | 97.4 | 99.5 | 100.0 | 100.0 |
| BR-VGGNet | 38.4 | 93.2 | 99.6 | 100.0 | 100.0 | 100.0 |
), ArticleFig(id=1241400391766701050, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=EN, label=Tab.5, caption=
Test results at rotational speed 1 772 r/min
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模型 Model | RSNR/dB |
|---|
| -10 | -5 | 0 | 5 | 10 | 无噪声 No noise |
|---|
| CSRP-CNN | 63.7 | 98.1 | 100.0 | 100.0 | 100.0 | 100.0 |
| MobileNetV3 | 13.2 | 31.0 | 83.1 | 96.5 | 99.8 | 99.6 |
| ShuffleNetV2 | 22.7 | 46.8 | 86.0 | 94.8 | 98.4 | 99.5 |
| ResNet18 | 25.9 | 73.2 | 97.9 | 99.4 | 99.9 | 100.0 |
| ResNet34 | 27.9 | 73.1 | 97.3 | 99.6 | 100.0 | 100.0 |
| BR-VGGNet | 47.4 | 94.0 | 99.9 | 100.0 | 100.0 | 100.0 |
), ArticleFig(id=1241400391850587135, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=CN, label=表5, caption=
转速1 772 r/min下的试验结果
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模型 Model | RSNR/dB |
|---|
| -10 | -5 | 0 | 5 | 10 | 无噪声 No noise |
|---|
| CSRP-CNN | 63.7 | 98.1 | 100.0 | 100.0 | 100.0 | 100.0 |
| MobileNetV3 | 13.2 | 31.0 | 83.1 | 96.5 | 99.8 | 99.6 |
| ShuffleNetV2 | 22.7 | 46.8 | 86.0 | 94.8 | 98.4 | 99.5 |
| ResNet18 | 25.9 | 73.2 | 97.9 | 99.4 | 99.9 | 100.0 |
| ResNet34 | 27.9 | 73.1 | 97.3 | 99.6 | 100.0 | 100.0 |
| BR-VGGNet | 47.4 | 94.0 | 99.9 | 100.0 | 100.0 | 100.0 |
), ArticleFig(id=1241400391968026627, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=EN, label=Tab.6, caption=
Test results at rotational speed 1 750 r/min
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模型 Model | RSNR/dB |
|---|
| -10 | -5 | 0 | 5 | 10 | 无噪声 No noise |
|---|
| CSRP-CNN | 70.5 | 98.6 | 100.0 | 100.0 | 100.0 | 100.0 |
| MobileNetV3 | 14.4 | 44.4 | 84.7 | 99.7 | 100.0 | 100.0 |
| ShuffleNetV2 | 24.1 | 50.2 | 86.5 | 97.3 | 99.4 | 99.9 |
| ResNet18 | 26.7 | 80.1 | 99.5 | 100.0 | 100.0 | 100.0 |
| ResNet34 | 29.7 | 81.7 | 98.8 | 100.0 | 100.0 | 100.0 |
| BR-VGGNet | 38.4 | 93.2 | 99.6 | 100.0 | 100.0 | 100.0 |
), ArticleFig(id=1241400392051912711, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=CN, label=表6, caption=
转速1 750 r/min下的试验结果
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模型 Model | RSNR/dB |
|---|
| -10 | -5 | 0 | 5 | 10 | 无噪声 No noise |
|---|
| CSRP-CNN | 70.5 | 98.6 | 100.0 | 100.0 | 100.0 | 100.0 |
| MobileNetV3 | 14.4 | 44.4 | 84.7 | 99.7 | 100.0 | 100.0 |
| ShuffleNetV2 | 24.1 | 50.2 | 86.5 | 97.3 | 99.4 | 99.9 |
| ResNet18 | 26.7 | 80.1 | 99.5 | 100.0 | 100.0 | 100.0 |
| ResNet34 | 29.7 | 81.7 | 98.8 | 100.0 | 100.0 | 100.0 |
| BR-VGGNet | 38.4 | 93.2 | 99.6 | 100.0 | 100.0 | 100.0 |
), ArticleFig(id=1241400392148381709, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=EN, label=Tab.7, caption=
Test results at rotational speed 1 730 r/min
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模型 Model | RSNR/dB |
|---|
| -10 | -5 | 0 | 5 | 10 | 无噪声 No noise |
|---|
| CSRP-CNN | 69.9 | 99.3 | 100.0 | 100.0 | 100.0 | 100.0 |
| MobileNetV3 | 13.4 | 38.2 | 98.2 | 100.0 | 100.0 | 100.0 |
| ShuffleNetV2 | 24.0 | 57.6 | 90.7 | 96.1 | 99.9 | 100.0 |
| ResNet18 | 28.6 | 87.6 | 99.7 | 100.0 | 100.0 | 100.0 |
| ResNet34 | 27.6 | 86.2 | 99.8 | 100.0 | 100.0 | 100.0 |
| BR-VGGNet | 57.0 | 98.1 | 100.0 | 100.0 | 100.0 | 100.0 |
), ArticleFig(id=1241400392240656401, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=CN, label=表7, caption=
转速1 730 r/min下的试验结果
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模型 Model | RSNR/dB |
|---|
| -10 | -5 | 0 | 5 | 10 | 无噪声 No noise |
|---|
| CSRP-CNN | 69.9 | 99.3 | 100.0 | 100.0 | 100.0 | 100.0 |
| MobileNetV3 | 13.4 | 38.2 | 98.2 | 100.0 | 100.0 | 100.0 |
| ShuffleNetV2 | 24.0 | 57.6 | 90.7 | 96.1 | 99.9 | 100.0 |
| ResNet18 | 28.6 | 87.6 | 99.7 | 100.0 | 100.0 | 100.0 |
| ResNet34 | 27.6 | 86.2 | 99.8 | 100.0 | 100.0 | 100.0 |
| BR-VGGNet | 57.0 | 98.1 | 100.0 | 100.0 | 100.0 | 100.0 |
), ArticleFig(id=1241400392337125396, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=EN, label=Tab.8, caption=
Results of noise test for MFS-MG data set
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模型 Model | RSNR/dB |
|---|
| -2 | 0 | 2 | 4 | 6 | 8 |
|---|
| CSRP-CNN | 82.2 | 88.2 | 90.2 | 92.2 | 93.6 | 95.6 |
| MobileNetV3 | 64.8 | 66.8 | 70.4 | 74.0 | 74.4 | 79.0 |
| ShuffleNetV2 | 46.0 | 49.2 | 53.2 | 54.0 | 54.8 | 59.6 |
| ResNet18 | 65.0 | 69.8 | 72.4 | 76.6 | 79.6 | 81.8 |
| ResNet34 | 61.2 | 68.0 | 71.4 | 77.2 | 79.4 | 79.6 |
| BR-VGGNet | 79.2 | 86.2 | 88.2 | 91.0 | 92.6 | 94.0 |
), ArticleFig(id=1241400392471343131, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=CN, label=表8, caption=
MFS-MG数据集的噪声测试结果
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模型 Model | RSNR/dB |
|---|
| -2 | 0 | 2 | 4 | 6 | 8 |
|---|
| CSRP-CNN | 82.2 | 88.2 | 90.2 | 92.2 | 93.6 | 95.6 |
| MobileNetV3 | 64.8 | 66.8 | 70.4 | 74.0 | 74.4 | 79.0 |
| ShuffleNetV2 | 46.0 | 49.2 | 53.2 | 54.0 | 54.8 | 59.6 |
| ResNet18 | 65.0 | 69.8 | 72.4 | 76.6 | 79.6 | 81.8 |
| ResNet34 | 61.2 | 68.0 | 71.4 | 77.2 | 79.4 | 79.6 |
| BR-VGGNet | 79.2 | 86.2 | 88.2 | 91.0 | 92.6 | 94.0 |
), ArticleFig(id=1241400392563617824, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=EN, label=Tab.9, caption=
Comparison of the parameters of the models used in the test
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| 模型 Model | CSRP-CNN | MobileNetV3 | ShuffleNetV2 | ResNet18 | ResNet34 | BR-VGGNet |
|---|
| 尺寸 Size/MB | 7.6 | 16.83 | 1.49 | 44.69 | 85.12 | 37.15 |
| 参数 Parameter/MB | 1.92 | 4.21 | 0.37 | 11.20 | 22.3 | 9.29 |
), ArticleFig(id=1241400392647503909, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=CN, label=表9, caption=
试验所用模型的参数对比
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| 模型 Model | CSRP-CNN | MobileNetV3 | ShuffleNetV2 | ResNet18 | ResNet34 | BR-VGGNet |
|---|
| 尺寸 Size/MB | 7.6 | 16.83 | 1.49 | 44.69 | 85.12 | 37.15 |
| 参数 Parameter/MB | 1.92 | 4.21 | 0.37 | 11.20 | 22.3 | 9.29 |
), ArticleFig(id=1241400392735584298, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=EN, label=Tab.10, caption=
Ablation test
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模型 Model | RSNR/dB |
|---|
| -2 | 8 |
|---|
通道和空间重组卷积与渐进式卷积神经网络 CSRP-CNN | 82.2 | 95.6 |
无通道和空间重组卷积 No CSConv | 67.2 | 93.6 |
无卷积注意力模块 No CBAM | 77.4 | 95.2 |
无渐进式卷积神经网络 No PCNN | 74.0 | 91.8 |
空间和通道重组卷积 SCConv | 79.4 | 94.6 |
), ArticleFig(id=1241400392811081772, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394838155882809, language=CN, label=表10, caption=
消融试验
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模型 Model | RSNR/dB |
|---|
| -2 | 8 |
|---|
通道和空间重组卷积与渐进式卷积神经网络 CSRP-CNN | 82.2 | 95.6 |
无通道和空间重组卷积 No CSConv | 67.2 | 93.6 |
无卷积注意力模块 No CBAM | 77.4 | 95.2 |
无渐进式卷积神经网络 No PCNN | 74.0 | 91.8 |
空间和通道重组卷积 SCConv | 79.4 | 94.6 |
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