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In response to the problem of the gearbox fault diagnosis and analysis based on multi-sensor data under dataset imbalanced conditions, a gearbox fault diagnosis method based on a kurtosis index data fusion and a generative adversarial neural networks (GAN) was proposed. This method weighted the fusion of multiple sensor data based on signal kurtosis,highlighting the fault sensitive components of the gearbox in the fused signal. Then, a wavelet packet transform was used to extract the energy coefficients of each frequency band of the signal as signal features. Finally, the classification and recognition of signal features were implemented based on a back propagation (BP) neural network. Due to the fact that in actual working conditions, fault signals were more difficult to obtain than normal signals, GAN was used to expand the fault data section of the dataset, and the expanded dataset was used to train BP neural network. Through test analysis, it is shown that the fault accuracy of the described method is as high as 98%, which verifies the correctness of the proposed method and provides new ideas and methods for multi-sensor data fusion and fault diagnosis problems.
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针对数据集不平衡条件下基于多传感器数据的齿轮箱故障诊断分析问题,提出一种基于峭度指标数据融合及生成对抗神经网络(Generative Adversarial Neural Network, GAN)的齿轮箱故障诊断方法。首先,基于信号峭度对多个传感器数据进行加权融合,使融合后的信号中突出齿轮箱的故障敏感成分;其次,利用小波包变换提取信号各频段的能量系数作为信号特征;最后,基于反向传播(Back Propagation, BP)神经网络实现信号特征的分类与识别。由于实际工况中,故障信号较正常信号更不易获取,所以采用GAN对数据集中故障数据部分进行扩展,并采用扩展后的数据集训练BP神经网络。试验分析表明,所述方法故障准确率高达98%,验明了所提方法的正确性,为多传感数据融合及故障诊断问题提供了新的思路与方法。
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杨星宇,男,1999年生,湖北武汉人,硕士研究生;主要研究方向为齿轮箱故障诊断;E-mail:1084149717@qq.com。
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杨星宇,男,1999年生,湖北武汉人,硕士研究生;主要研究方向为齿轮箱故障诊断;E-mail:1084149717@qq.com。
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2021:20-30.(In Chinese), articleTitle=Research and application of transformer fault diagnosis method based on PSO-BP neural network, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1241049282854318530, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, xref=null, ext=[AuthorCompanyExt(id=1241049282866901444, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, companyId=1241049282854318530, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=School of Mechanical and Electrical Engineering, Wuhan University of Technology, Wuhan 430070, China), AuthorCompanyExt(id=1241049282879484359, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, companyId=1241049282854318530, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=武汉理工大学 机电工程学院,武汉 430070)])], figs=[ArticleFig(id=1241049287619048009, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.1, caption=
GAN schematic diagram, figureFileSmall=gogIfsJV/UfY+molflZ1fQ==, figureFileBig=JEsDH2xoxqCBlCSekoxQXw==, tableContent=null), ArticleFig(id=1241049287778431571, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图1, caption=
GAN原理图, figureFileSmall=gogIfsJV/UfY+molflZ1fQ==, figureFileBig=JEsDH2xoxqCBlCSekoxQXw==, tableContent=null), ArticleFig(id=1241049288051061338, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.2, caption=
Network structure of the generator G, figureFileSmall=cpG9NX7SknkzZOCGUpSRoA==, figureFileBig=owphAF6aHI2jPSnDeA1CRQ==, tableContent=null), ArticleFig(id=1241049288202056287, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图2, caption=
生成器G网络结构, figureFileSmall=cpG9NX7SknkzZOCGUpSRoA==, figureFileBig=owphAF6aHI2jPSnDeA1CRQ==, tableContent=null), ArticleFig(id=1241049289993024104, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.3, caption=
Network structure of the discriminator D, figureFileSmall=rlSXIdtXP2lXvjgjln6opQ==, figureFileBig=YOvZNekNzYzOUOGEbJunyg==, tableContent=null), ArticleFig(id=1241049290680889967, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图3, caption=
判别器D网络结构, figureFileSmall=rlSXIdtXP2lXvjgjln6opQ==, figureFileBig=YOvZNekNzYzOUOGEbJunyg==, tableContent=null), ArticleFig(id=1241049290836079221, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.4, caption=
Transform decomposition tree of the three-layer wavelet, figureFileSmall=75czpjZsssbj2vKIx9k5yQ==, figureFileBig=LDijmHB42v1WkG8elZIHNA==, tableContent=null), ArticleFig(id=1241049290936742523, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图4, caption=
三层小波变换分解树, figureFileSmall=75czpjZsssbj2vKIx9k5yQ==, figureFileBig=LDijmHB42v1WkG8elZIHNA==, tableContent=null), ArticleFig(id=1241049291041600129, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.5, caption=
Transform decomposition tree of the three layer wavelet packet, figureFileSmall=rKBtFLMn/mkQy3zbOcDoAw==, figureFileBig=Q2YxHTwIWE8aoS/AzR9yAg==, tableContent=null), ArticleFig(id=1241049291163234955, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图5, caption=
三层小波包变换分解树, figureFileSmall=rKBtFLMn/mkQy3zbOcDoAw==, figureFileBig=Q2YxHTwIWE8aoS/AzR9yAg==, tableContent=null), ArticleFig(id=1241049291423281808, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.6, caption=
Schematic diagram of BP neural network, figureFileSmall=XdEuEqVdcFpbWMVwQXxaOA==, figureFileBig=k2r/wBFS8SKAzRubPOjlSQ==, tableContent=null), ArticleFig(id=1241049291595248279, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图6, caption=
BP神经网络原理图, figureFileSmall=XdEuEqVdcFpbWMVwQXxaOA==, figureFileBig=k2r/wBFS8SKAzRubPOjlSQ==, tableContent=null), ArticleFig(id=1241049291880460959, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.7, caption=
Overall flow of the algorithm, figureFileSmall=9a74NET7Iuoecz0g9UBSSg==, figureFileBig=1B/i5LMuSiy+UACXyOXWDg==, tableContent=null), ArticleFig(id=1241049292027261606, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图7, caption=
算法总体流程, figureFileSmall=9a74NET7Iuoecz0g9UBSSg==, figureFileBig=1B/i5LMuSiy+UACXyOXWDg==, tableContent=null), ArticleFig(id=1241049292220199596, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.8, caption=
Gearbox fault test bench, figureFileSmall=SONV2QgHPyPMraOU2iHHkg==, figureFileBig=6SP44CpJSPeRTmKo2c1PLg==, tableContent=null), ArticleFig(id=1241049292379583152, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图8, caption=
齿轮箱故障试验台, figureFileSmall=SONV2QgHPyPMraOU2iHHkg==, figureFileBig=6SP44CpJSPeRTmKo2c1PLg==, tableContent=null), ArticleFig(id=1241049292639630005, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.9, caption=
Pitting fault gear, figureFileSmall=j7xMXfRz5HaN8j3GjvPEwA==, figureFileBig=ojBD7HoHeS1U/6g8w+I9lw==, tableContent=null), ArticleFig(id=1241049294384460472, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图9, caption=
点蚀故障齿轮, figureFileSmall=j7xMXfRz5HaN8j3GjvPEwA==, figureFileBig=ojBD7HoHeS1U/6g8w+I9lw==, tableContent=null), ArticleFig(id=1241049294539649727, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.10, caption=
Cracked fault gear, figureFileSmall=/DdTmJVEX/8T/zdaL6v7/Q==, figureFileBig=nCmJmti9P9oc3OFb/9N7rQ==, tableContent=null), ArticleFig(id=1241049294619341505, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图10, caption=
裂纹故障齿轮, figureFileSmall=/DdTmJVEX/8T/zdaL6v7/Q==, figureFileBig=nCmJmti9P9oc3OFb/9N7rQ==, tableContent=null), ArticleFig(id=1241049294782919367, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.11, caption=
Time domain signals of broken teeth-pitting and crack-pitting faults and spectrums, figureFileSmall=CD49yvxMpesmV5oD+31ojw==, figureFileBig=7shzpXhidlXnHG77vZAlkQ==, tableContent=null), ArticleFig(id=1241049295156212433, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图11, caption=
断齿-点蚀及裂纹点蚀故障时域信号及频谱图, figureFileSmall=CD49yvxMpesmV5oD+31ojw==, figureFileBig=7shzpXhidlXnHG77vZAlkQ==, tableContent=null), ArticleFig(id=1241049295252681430, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.12, caption=
Time domain signals of pitting-pitting faults and normal working conditions and spectrums, figureFileSmall=XhIh41L+LdwHOP3wDChTow==, figureFileBig=C3HSiwSkW6EWRok4Nkb98Q==, tableContent=null), ArticleFig(id=1241049295370121946, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图12, caption=
点蚀-点蚀及正常工况时域信号及频谱图, figureFileSmall=XhIh41L+LdwHOP3wDChTow==, figureFileBig=C3HSiwSkW6EWRok4Nkb98Q==, tableContent=null), ArticleFig(id=1241049295474979550, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.13, caption=
Pitting-pitting composite fault spectrum generated by GAN, figureFileSmall=HDozVkL4WJt/ySLSe7sB9g==, figureFileBig=h9NvIP2HznyIuzZJ3Av4jg==, tableContent=null), ArticleFig(id=1241049295584031460, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图13, caption=
GAN生成点蚀-点蚀复合故障频谱, figureFileSmall=HDozVkL4WJt/ySLSe7sB9g==, figureFileBig=h9NvIP2HznyIuzZJ3Av4jg==, tableContent=null), ArticleFig(id=1241049295680500456, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.14, caption=
Pitting-crack composite fault spectrum generated by GAN, figureFileSmall=lguinMjw72S/beVFAHMpog==, figureFileBig=t0By8owQKTEe3I7Oulvruw==, tableContent=null), ArticleFig(id=1241049295823106796, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图14, caption=
GAN生成点蚀-裂纹复合故障频谱, figureFileSmall=lguinMjw72S/beVFAHMpog==, figureFileBig=t0By8owQKTEe3I7Oulvruw==, tableContent=null), ArticleFig(id=1241049295919575793, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.15, caption=
Broken teeth-pitting composite fault spectrum generated by GAN, figureFileSmall=YjjvYck4V7/AyQa5TB/bhg==, figureFileBig=H1E9ZsbymZJvK758gfGo2Q==, tableContent=null), ArticleFig(id=1241049296024433397, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图15, caption=
GAN生成断齿-点蚀复合故障频谱, figureFileSmall=YjjvYck4V7/AyQa5TB/bhg==, figureFileBig=H1E9ZsbymZJvK758gfGo2Q==, tableContent=null), ArticleFig(id=1241049296267703035, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.16, caption=
Comparison of energy characteristics between GAN generated signals and real signals under pitting-pitting composite faults, figureFileSmall=uYoVWb4Ax1kSni2cp8P2Qg==, figureFileBig=GMftzQJWWZPdE0TLP63ERQ==, tableContent=null), ArticleFig(id=1241049296418697983, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图16, caption=
点蚀-点蚀复合故障下GAN生成信号与真实信号能量特征对比, figureFileSmall=uYoVWb4Ax1kSni2cp8P2Qg==, figureFileBig=GMftzQJWWZPdE0TLP63ERQ==, tableContent=null), ArticleFig(id=1241049296569692934, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.17, caption=
Comparison of energy characteristics between GAN generated signals and real signals under composite faults of broken teeth-pitting, figureFileSmall=GpKgm8z6n0m8BzbqyCtykQ==, figureFileBig=LJX+efH4fl8Fhwjg3LeOmQ==, tableContent=null), ArticleFig(id=1241049296888460041, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图17, caption=
断齿-点蚀复合故障下GAN生成信号与真实信号能量特征对比, figureFileSmall=GpKgm8z6n0m8BzbqyCtykQ==, figureFileBig=LJX+efH4fl8Fhwjg3LeOmQ==, tableContent=null), ArticleFig(id=1241049297165284111, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.18, caption=
Comparison of energy characteristics between GAN generated signals and real signals under crack-pitting composite faults, figureFileSmall=IJf+pKEIQoVvg0J0wdp23A==, figureFileBig=DKXMwnMdQp9F6mlLUEYmIg==, tableContent=null), ArticleFig(id=1241049299224687381, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图18, caption=
裂纹-点蚀复合故障下GAN生成信号与真实信号能量特征对比, figureFileSmall=IJf+pKEIQoVvg0J0wdp23A==, figureFileBig=DKXMwnMdQp9F6mlLUEYmIg==, tableContent=null), ArticleFig(id=1241049299312767770, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.19, caption=
Comparison of time domain signals for broken teeth-pitting fault, figureFileSmall=nh9angAjZa8i+4VTJbqBFA==, figureFileBig=wldtlBzmoL+XVgSG6FVj7w==, tableContent=null), ArticleFig(id=1241049299396653852, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图19, caption=
断齿点蚀故障时域信号对比, figureFileSmall=nh9angAjZa8i+4VTJbqBFA==, figureFileBig=wldtlBzmoL+XVgSG6FVj7w==, tableContent=null), ArticleFig(id=1241049299581203232, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.20, caption=
Comparison of time domain signals for pitting-pitting faults, figureFileSmall=IduCUPpFsdEjHABQUpjfoQ==, figureFileBig=yK9g1uwJrZ0cS/+AY8SeWA==, tableContent=null), ArticleFig(id=1241049299816084262, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图20, caption=
点蚀-点蚀故障时域信号对比, figureFileSmall=IduCUPpFsdEjHABQUpjfoQ==, figureFileBig=yK9g1uwJrZ0cS/+AY8SeWA==, tableContent=null), ArticleFig(id=1241049300088714028, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.21, caption=
Comparison of time domain signals for crack-pitting faults, figureFileSmall=6NxR4zYnoL4Ob1f/gLEnJg==, figureFileBig=qyZW6Q9JAZUQ5y3TWBg3bA==, tableContent=null), ArticleFig(id=1241049300239708981, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图21, caption=
裂纹-点蚀故障时域信号对比, figureFileSmall=6NxR4zYnoL4Ob1f/gLEnJg==, figureFileBig=qyZW6Q9JAZUQ5y3TWBg3bA==, tableContent=null), ArticleFig(id=1241049300457812797, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.22, caption=
Characteristic curves of each type of faults, figureFileSmall=ySsF2LHqqfXxqi5JljrliQ==, figureFileBig=U7kGCr85KKvHgZoVkmXJbA==, tableContent=null), ArticleFig(id=1241049300722053952, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图22, caption=
各类型故障特征曲线, figureFileSmall=ySsF2LHqqfXxqi5JljrliQ==, figureFileBig=U7kGCr85KKvHgZoVkmXJbA==, tableContent=null), ArticleFig(id=1241049300814328642, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.23, caption=
Loss function of BP neural network, figureFileSmall=EG3TmSvzqq7BPowCB37GuA==, figureFileBig=ynW5RkKmsRNBVdtdtz1xKg==, tableContent=null), ArticleFig(id=1241049300927574856, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图23, caption=
BP神经网络loss函数, figureFileSmall=EG3TmSvzqq7BPowCB37GuA==, figureFileBig=ynW5RkKmsRNBVdtdtz1xKg==, tableContent=null), ArticleFig(id=1241049301409919821, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.24, caption=
Training gradient of BP neural network, figureFileSmall=50xuDLXR+WLmuh1AiHaKhg==, figureFileBig=wYb8Zinhtrax0TUUiWuAkQ==, tableContent=null), ArticleFig(id=1241049301581886289, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图24, caption=
BP神经网络训练梯度, figureFileSmall=50xuDLXR+WLmuh1AiHaKhg==, figureFileBig=wYb8Zinhtrax0TUUiWuAkQ==, tableContent=null), ArticleFig(id=1241049303087641430, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.25, caption=
Confusion matrix of multi-sensor data fusion test set, figureFileSmall=yZu4W131TjbXWKGfd+3eLQ==, figureFileBig=VPixCZV5GR3HpWEU5kIZ0A==, tableContent=null), ArticleFig(id=1241049303272190809, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图25, caption=
多传感器数据融合测试集混淆矩阵, figureFileSmall=yZu4W131TjbXWKGfd+3eLQ==, figureFileBig=VPixCZV5GR3HpWEU5kIZ0A==, tableContent=null), ArticleFig(id=1241049303465128796, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.26, caption=
Confusion matrix of single-sensor test set, figureFileSmall=iXSewf/MCQ+pVO22hT3Npg==, figureFileBig=EQAZK0F6FWa3kao8L03M/w==, tableContent=null), ArticleFig(id=1241049303616123748, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图26, caption=
单一传感器测试集混淆矩阵, figureFileSmall=iXSewf/MCQ+pVO22hT3Npg==, figureFileBig=EQAZK0F6FWa3kao8L03M/w==, tableContent=null), ArticleFig(id=1241049303960056678, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Fig.27, caption=
Confusion matrix of test set obtain by a small amount of data is trained, figureFileSmall=ftv/vX/tSyuOcmI5dbs22g==, figureFileBig=iGAAqSKkWk9iA0TnGsIKsQ==, tableContent=null), ArticleFig(id=1241049304232686442, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=图27, caption=
少量数据训练获得测试集混淆矩阵, figureFileSmall=ftv/vX/tSyuOcmI5dbs22g==, figureFileBig=iGAAqSKkWk9iA0TnGsIKsQ==, tableContent=null), ArticleFig(id=1241049304320766831, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Tab.1, caption=
Technical parameters of gearboxes
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输入齿轮齿数 Number of teeth of the input gear z1 | 输出齿轮齿数 Number of teeth of the output gear z2 | 输入级传动比 Input stage transmission ratio I1 | 输出级传动比 Output stage transmission ratio I2 | 输入级转速 Input stage speed ω/(r/min) |
|---|
| 50 | 75 | 50:75 | 25:75 | 1 440 |
), ArticleFig(id=1241049304438207346, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=表1, caption=
齿轮箱技术参数
, figureFileSmall=null, figureFileBig=null, tableContent=
输入齿轮齿数 Number of teeth of the input gear z1 | 输出齿轮齿数 Number of teeth of the output gear z2 | 输入级传动比 Input stage transmission ratio I1 | 输出级传动比 Output stage transmission ratio I2 | 输入级转速 Input stage speed ω/(r/min) |
|---|
| 50 | 75 | 50:75 | 25:75 | 1 440 |
), ArticleFig(id=1241049304585007991, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Tab.2, caption=
Sample numbers under various operating conditions
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故障类型 Fault type | 正常工况 Normal working condition | 点蚀-点蚀工况 Pitting-pitting working condition | 裂纹-点蚀工况 Cracks-pitting working condition | 断齿-点蚀工况 Broken teeth-pitting working condition |
|---|
样本个数 Number of samples | 160 | 80 | 80 | 80 |
), ArticleFig(id=1241049304815694714, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=表2, caption=
各工况下样本个数
, figureFileSmall=null, figureFileBig=null, tableContent=
故障类型 Fault type | 正常工况 Normal working condition | 点蚀-点蚀工况 Pitting-pitting working condition | 裂纹-点蚀工况 Cracks-pitting working condition | 断齿-点蚀工况 Broken teeth-pitting working condition |
|---|
样本个数 Number of samples | 160 | 80 | 80 | 80 |
), ArticleFig(id=1241049304996049791, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Tab.3, caption=
Time domain signal parameters
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时域参数 Time domain parameter | 齿数 Number of teeth | 转频 Rotating frequency/Hz | 啮合频率(fm)及倍频 Mesh frequency(fm)and frequency multiplication/Hz | 边带频率 Sideband frequency/Hz |
|---|
| 数值Value | 50 | 24 | n×1 200 | ±n×24 |
), ArticleFig(id=1241049305209959300, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=表3, caption=
时域信号参数
, figureFileSmall=null, figureFileBig=null, tableContent=
时域参数 Time domain parameter | 齿数 Number of teeth | 转频 Rotating frequency/Hz | 啮合频率(fm)及倍频 Mesh frequency(fm)and frequency multiplication/Hz | 边带频率 Sideband frequency/Hz |
|---|
| 数值Value | 50 | 24 | n×1 200 | ±n×24 |
), ArticleFig(id=1241049305671332747, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=EN, label=Tab.4, caption=
Number of samples under each working condition after expansion
, figureFileSmall=null, figureFileBig=null, tableContent=
故障类型 Fault type | 正常工况 Normal working condition | 点蚀-点蚀故障Pitting-pitting failure | 裂纹-点蚀故障Crack-pitting failure | 断齿-点蚀故障Broken teeth-pitting failure |
|---|
样本个数 Number of samples | 160 | 80+80 | 80+80 | 80+80 |
), ArticleFig(id=1241049305943962510, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264965611646, language=CN, label=表4, caption=
扩充后各工况下样本个数
, figureFileSmall=null, figureFileBig=null, tableContent=
故障类型 Fault type | 正常工况 Normal working condition | 点蚀-点蚀故障Pitting-pitting failure | 裂纹-点蚀故障Crack-pitting failure | 断齿-点蚀故障Broken teeth-pitting failure |
|---|
样本个数 Number of samples | 160 | 80+80 | 80+80 | 80+80 |
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