Article(id=1200066401231794435, tenantId=1146029695717560320, journalId=1189918454225211397, issueId=1200066375432635297, articleNumber=null, orderNo=null, doi=10.20104/j.cnki.1674-6546.20230178, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=null, receivedDateStr=null, revisedDate=1684771200000, revisedDateStr=2023-05-23, acceptedDate=null, acceptedDateStr=null, onlineDate=1764047726209, onlineDateStr=2025-11-25, pubDate=1702569600000, pubDateStr=2023-12-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1764047726209, onlineIssueDateStr=2025-11-25, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1764047726209, creator=13701087609, updateTime=1764047726209, updator=13701087609, issue=Issue{id=1200066375432635297, tenantId=1146029695717560320, journalId=1189918454225211397, year='2023', volume='', issue='12', pageStart='1', pageEnd='45', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1764047720058, creator=13701087609, updateTime=1764048344119, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1200068992980320464, tenantId=1146029695717560320, journalId=1189918454225211397, issueId=1200066375432635297, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1200068992980320465, tenantId=1146029695717560320, journalId=1189918454225211397, issueId=1200066375432635297, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=37, endPage=42, ext={EN=ArticleExt(id=1200066401647030582, articleId=1200066401231794435, tenantId=1146029695717560320, journalId=1189918454225211397, language=EN, title=Research on Vehicle Abnormal Sounds Recognition Based on Convolutional Neural Network, columnId=null, journalTitle=Automotive Engineer, columnName=null, runingTitle=null, highlight=null, articleAbstract=
To improve the low efficiency of the current diagnosis method using subjective evaluation method, this paper proposed a method for identifying vehicle abnormal noise based on Convolutional Neural Network (CNN). A four post vibration test stand was used to collect raw abnormal noise signals with high signal-to-noise ratio in a semi anechoic chamber environment as the research object to extract the Mel-spectrogram of the signal as input to the neural network, then, a convolutional neural network was constructed to perform deep level feature extraction, compression, and classification recognition on the data. It was found that the average recognition rate can reach 90.5%. Finally, the transfer learning method was used to optimize the model. The test results indicate that VGG and ResNet models can improve recognition accuracy, and the ResNet network has better recognition performance in the test set.
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针对目前采用主观评价方法进行汽车异响诊断效率较低的问题,提出了一种基于卷积神经网络(CNN)的汽车异响识别方法。借助四立柱振动台在半消声室环境下采集信噪比较高的原始异响信号作为研究对象,提取信号的梅尔频谱(Mel-Spectrogram)作为神经网络的输入,然后搭建卷积神经网络对数据进行深层次的特征提取和压缩并进行分类识别,平均识别率可达90.5%,最后运用迁移学习的方法对模型进行优化,试验结果表明,VGG和ResNet模型均可以提高识别精度,且ResNet网络在测试集上的识别效果更好。
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| 序号 | 仪器名称 | 型号 |
| 1 | 整车四立柱试验台 | |
| 2 | 精密声传感器 | G.R.A.S.46AE |
| 3 | 标定器 | B&K 4228 |
| 4 | LMS数据采集前端 | SCM09 SERIAL |
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测试仪器
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| 序号 | 仪器名称 | 型号 |
| 1 | 整车四立柱试验台 | |
| 2 | 精密声传感器 | G.R.A.S.46AE |
| 3 | 标定器 | B&K 4228 |
| 4 | LMS数据采集前端 | SCM09 SERIAL |
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| 层 | 输出结构(Output Shape) |
| 卷积层1(Conv2d_1) | (224,224,16) |
| 池化层1(MaxPooling2D_1) | (112.112.16) |
| 卷积层2(Conv2d_2) | (112,112,32) |
| 池化层2(MaxPooling2D_2) | (56,56,32) |
| 卷积层3(Conv2d_3) | (56,56,16) |
| 池化层3(MaxPooling2D_3) | (28,28,16) |
| 展平层(Flatten) | (12 544) |
| 全连接层1(Dense_1) | (512) |
| 全连接层2(Dense_2) | (6) |
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卷积神经网络结构
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| 层 | 输出结构(Output Shape) |
| 卷积层1(Conv2d_1) | (224,224,16) |
| 池化层1(MaxPooling2D_1) | (112.112.16) |
| 卷积层2(Conv2d_2) | (112,112,32) |
| 池化层2(MaxPooling2D_2) | (56,56,32) |
| 卷积层3(Conv2d_3) | (56,56,16) |
| 池化层3(MaxPooling2D_3) | (28,28,16) |
| 展平层(Flatten) | (12 544) |
| 全连接层1(Dense_1) | (512) |
| 全连接层2(Dense_2) | (6) |
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| 模型结构 | 训练精度 | 验证精度 | 测试精度 |
| Model1 | 89.06 | 90.07 | 90.50 |
| VGG16 | 93.41 | 94.26 | 93.33 |
| ResNet50 | 93.55 | 94.70 | 94.33 |
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不同模型各精度汇总 %
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| 模型结构 | 训练精度 | 验证精度 | 测试精度 |
| Model1 | 89.06 | 90.07 | 90.50 |
| VGG16 | 93.41 | 94.26 | 93.33 |
| ResNet50 | 93.55 | 94.70 | 94.33 |
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