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The six-component forces at the wheel-road interaction represent the sole coupling between the vehicle and the road surface, and obtaining these forces is critical for conducting reliability and durability assessments of the entire vehicle. In response to the high cost, long cycle, and low efficiency associated with traditional methods for obtaining wheel six-component forces, a data-driven approach for rapidly predicting wheel loads was proposed. Firstly, for the non-stationary random signals on real vehicle roads, a joint method of the complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN), permutation entropy (PE), and wavelet threshold denoising (WTD) was applied for the data denoising.Secondly, the easily obtainable and low-cost data, such as wheel center acceleration, damper displacement, and center of mass acceleration, were used as inputs. Various neural network architectures with nonlinear transfer relationships were designed for multi-surface wheel six-component force prediction. A multi-dimensional load prediction evaluation system was established in the time domain, frequency domain, and damage domain. Finally, in order to overcome the challenges of a large and costly training dataset, an input channel compression method based on the correlation and coherence analysis of neural network inputs and outputs was proposed. Minimum load signal segment division criteria were introduced, and the minimum segment duration for each road surface was determined to compress the training dataset. Through continuous model iterations, the predicted values of the wheel six-component forces closely match the measured values, and the load characteristics are preserved. This demonstrates that the minimal dataset model can achieve a high level of prediction accuracy with fewer input channels and shorter load segment durations, resulting in a 28.85% improvement in computational efficiency.
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车辆与路面间相互作用力中的车轮六分力是车路间的唯一耦合,获取车轮六分力是开展整车可靠性与耐久性评价的关键。针对传统的车轮六分力获取方法成本高、周期长、效率低的问题,提出数据驱动的车轮载荷快速预测的方法。首先,针对实车道路非平稳随机信号,采用基于自适应噪声完备集合经验模态分解(Complete Ensemble Empirical Mode Decomposition with Adaptive Noise, CEEMDAN)、排列熵(Permutation Entropy, PE)以及小波阈值降噪(Wavelet Threshold Denoising, WTD)的联合方法进行数据去噪;其次,以轮心加速度、减振器位移、质心加速度等容易获取且获取成本低的数据为输入,设计包含非线性传递关系的不同神经网络架构进行多路面下车轮六分力预测,并建立时域、频域、损伤域多维度载荷预测评估体系;最后,为克服训练样本大且获取代价高的缺点,提出基于神经网络输入与输出相关性-相干性分析的输入通道压缩方法,提出最小载荷信号片段划分指标并确定各路面最小片段时长,进行训练集压缩。经过模型不断迭代,车轮六分力的预测值与实测值较为接近,载荷特征也得以保留,计算效率提高28.85%,证明了最小数据集模型能够以较少的输入通道数量、较短的载荷片段时长复现较高期望的预测精度。
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赵礼辉,男,1985年生,山东青岛人,博士,副教授,硕士研究生导师;主要研究方向为车辆强度可靠性设计与评价、车辆载荷特征建模与快速试验;E-mail:
pheigoe@126.com。
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1.School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
2.CMIF Key Laboratory for Strength and Reliability Evaluation of Automotive Structures, Shanghai 200093, China
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1.上海理工大学 机械工程学院,上海 200093
2.机械工业汽车机械零部件强度与可靠性评价重点实验室,上海 200093
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冯金芝,女,1973年生,山东诸城人,博士,副教授,硕士研究生导师;主要研究方向为现代汽车设计理论;E-mail:jzfeng99@163.com。
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冯金芝,女,1973年生,山东诸城人,博士,副教授,硕士研究生导师;主要研究方向为现代汽车设计理论;E-mail:jzfeng99@163.com。
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1.School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
2.CMIF Key Laboratory for Strength and Reliability Evaluation of Automotive Structures, Shanghai 200093, China
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1.上海理工大学 机械工程学院,上海 200093
2.机械工业汽车机械零部件强度与可靠性评价重点实验室,上海 200093
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1, 2, 3, address=
1.School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
2.CMIF Key Laboratory for Strength and Reliability Evaluation of Automotive Structures, Shanghai 200093, China
3.Shanghai Technical Service Platform for Reliability Evaluation of New Energy Vehicles, Shanghai 200093, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1228282205626106005, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, authorId=1228282205424779401, language=CN, stringName=赵礼辉, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.上海理工大学 机械工程学院,上海 200093
2.机械工业汽车机械零部件强度与可靠性评价重点实验室,上海 200093
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Schematic diagram of the sensor and the driving route, figureFileSmall=y1A+dqY6Lz7Ygxf6wkSmOg==, figureFileBig=JUiXI5Fz5hgQebjmzpb/FA==, tableContent=null), ArticleFig(id=1228282206825677006, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=图1, caption=
传感器示意图及行驶路线, figureFileSmall=y1A+dqY6Lz7Ygxf6wkSmOg==, figureFileBig=JUiXI5Fz5hgQebjmzpb/FA==, tableContent=null), ArticleFig(id=1228282207094112475, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Fig.2, caption=
Satellite map of road load collection, figureFileSmall=KzwIrcBR10XsvrksQeUmHA==, figureFileBig=cEVOiA79KlinExX8H10GJg==, tableContent=null), ArticleFig(id=1228282207182192866, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=图2, caption=
道路载荷采集卫星图, figureFileSmall=KzwIrcBR10XsvrksQeUmHA==, figureFileBig=cEVOiA79KlinExX8H10GJg==, tableContent=null), ArticleFig(id=1228282207261884648, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Fig.3, caption=
Measured wheel center force load, figureFileSmall=eo9kkDsd2d8JB28RGMqdbg==, figureFileBig=LpQfTAWe3FQYIuFuz6aLUA==, tableContent=null), ArticleFig(id=1228282208654393587, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=图3, caption=
实测轮心力载荷, figureFileSmall=eo9kkDsd2d8JB28RGMqdbg==, figureFileBig=LpQfTAWe3FQYIuFuz6aLUA==, tableContent=null), ArticleFig(id=1228282208746668285, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Fig.4, caption=
Validation testing of the load, figureFileSmall=foYkTFhSK97MFNz7HdvK2g==, figureFileBig=TGFvcvjqFyQUCZr/K+JSmg==, tableContent=null), ArticleFig(id=1228282208847331588, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=图4, caption=
载荷有效性检验, figureFileSmall=foYkTFhSK97MFNz7HdvK2g==, figureFileBig=TGFvcvjqFyQUCZr/K+JSmg==, tableContent=null), ArticleFig(id=1228282208922829064, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Fig.5, caption=
Comparison of load resampling, figureFileSmall=yo9UEuoIGj4TLnocTEZ8qg==, figureFileBig=5oADlHPFp2m4iFP5gZNclQ==, tableContent=null), ArticleFig(id=1228282209015103759, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=图5, caption=
载荷重采样对比, figureFileSmall=yo9UEuoIGj4TLnocTEZ8qg==, figureFileBig=5oADlHPFp2m4iFP5gZNclQ==, tableContent=null), ArticleFig(id=1228282209098989844, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Fig.6, caption=
Original load and its IMF component, figureFileSmall=+ywOzb0UeM5SI5z5E6IbJQ==, figureFileBig=5EneBxtiRCgWB5cbNq6PlA==, tableContent=null), ArticleFig(id=1228282209195458838, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=图6, caption=
原始载荷及其本征模态函数分量, figureFileSmall=+ywOzb0UeM5SI5z5E6IbJQ==, figureFileBig=5EneBxtiRCgWB5cbNq6PlA==, tableContent=null), ArticleFig(id=1228282209287733532, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Fig.7, caption=
Comparison of original load noise reduction, figureFileSmall=BgJ4/BmWS2ApAmfi8SPZhQ==, figureFileBig=2xBR+L8J3ey+frmqSkK7iw==, tableContent=null), ArticleFig(id=1228282209375813925, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=图7, caption=
原始载荷降噪对比, figureFileSmall=BgJ4/BmWS2ApAmfi8SPZhQ==, figureFileBig=2xBR+L8J3ey+frmqSkK7iw==, tableContent=null), ArticleFig(id=1228282209489060138, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Fig.8, caption=
LSTM neural network, figureFileSmall=e03d2eCCPytl2Aj4IozYmA==, figureFileBig=92Xjz/kVDaoCsKVBUIz7lw==, tableContent=null), ArticleFig(id=1228282209585529135, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=图8, caption=
长短期记忆神经网络, figureFileSmall=e03d2eCCPytl2Aj4IozYmA==, figureFileBig=92Xjz/kVDaoCsKVBUIz7lw==, tableContent=null), ArticleFig(id=1228282209711358263, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Fig.9, caption=
Training error of LSTM neural network, figureFileSmall=eQdwCtXztp58+PeOgs/dvQ==, figureFileBig=jm5nw/+kkkHN7YtaB3KgDQ==, tableContent=null), ArticleFig(id=1228282209799438650, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=图9, caption=
长短期记忆神经网络训练误差, figureFileSmall=eQdwCtXztp58+PeOgs/dvQ==, figureFileBig=jm5nw/+kkkHN7YtaB3KgDQ==, tableContent=null), ArticleFig(id=1228282209874936127, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Fig.10, caption=
Time-domain comparison between predicted loads and actual loads, figureFileSmall=9/eDQ5TgRBJtQfFm4oFYrg==, figureFileBig=/L0ATrzuar5vDnwOIvQ3Rw==, tableContent=null), ArticleFig(id=1228282209967210820, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=图10, caption=
预测载荷与真实载荷时域对比, figureFileSmall=9/eDQ5TgRBJtQfFm4oFYrg==, figureFileBig=/L0ATrzuar5vDnwOIvQ3Rw==, tableContent=null), ArticleFig(id=1228282210067874121, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Fig.11, caption=
Frequency-domain comparison between predicted loads and actual loads, figureFileSmall=2Ux6pludcisPYVa6eM29YA==, figureFileBig=J55Hs3utXX/wfg90yrJYBg==, tableContent=null), ArticleFig(id=1228282210206286162, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=图11, caption=
预测载荷与真实载荷频域对比, figureFileSmall=2Ux6pludcisPYVa6eM29YA==, figureFileBig=J55Hs3utXX/wfg90yrJYBg==, tableContent=null), ArticleFig(id=1228282210340503895, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Fig.12, caption=
Comparison of rain flow matrices between predicted loads and actual loads, figureFileSmall=BYh+DnIUFcki4SNfvEicZA==, figureFileBig=zOT3GBWJqtN4sTxn3roTHg==, tableContent=null), ArticleFig(id=1228282210432778591, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=图12, caption=
预测载荷与真实载荷雨流矩阵对比, figureFileSmall=BYh+DnIUFcki4SNfvEicZA==, figureFileBig=zOT3GBWJqtN4sTxn3roTHg==, tableContent=null), ArticleFig(id=1228282210495693156, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Fig.13, caption=
Comparison of LSTM and NARX neural networks in multiple dimensions, figureFileSmall=zwSsG5bHAp7iNnbyQnXCqg==, figureFileBig=Dx4y1vG6fQVJ3r5jf9+z0Q==, tableContent=null), ArticleFig(id=1228282210571190633, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=图13, caption=
长短期记忆神经网络与带外部输入的非线性自回归神经网络的多维度对比, figureFileSmall=zwSsG5bHAp7iNnbyQnXCqg==, figureFileBig=Dx4y1vG6fQVJ3r5jf9+z0Q==, tableContent=null), ArticleFig(id=1228282210663465329, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Fig.14, caption=
Schematic diagram of the load signal segmentation, figureFileSmall=3+RdbjAFntCtAP35hIBniA==, figureFileBig=p7ODaE5EDbBEy1UKdFPBbA==, tableContent=null), ArticleFig(id=1228282210726379891, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=图14, caption=
载荷信号片段划分原理图, figureFileSmall=3+RdbjAFntCtAP35hIBniA==, figureFileBig=p7ODaE5EDbBEy1UKdFPBbA==, tableContent=null), ArticleFig(id=1228282210801877367, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Fig.15, caption=
Schematic and results of load segmentation, figureFileSmall=I3dJnFG4CWbh8ybTI65Aig==, figureFileBig=1YkMJXB3afAZyisJHMWSIQ==, tableContent=null), ArticleFig(id=1228282210877374845, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=图15, caption=
载荷片段划分示意及结果, figureFileSmall=I3dJnFG4CWbh8ybTI65Aig==, figureFileBig=1YkMJXB3afAZyisJHMWSIQ==, tableContent=null), ArticleFig(id=1228282210978038147, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Tab.1, caption=
Comparison of load resampling damage
, figureFileSmall=null, figureFileBig=null, tableContent=
采样频率 Sampling frequency fs /Hz | 512 | 256 | 100 | 50 | 25 |
|---|
损伤值 Damage value/10-11 | 4.53 | 4.49 | 4.28 | 3.71 | 2.44 |
重采样损伤值 Resampling damage value/10-11 | 4.53 | 4.45 | 4.08 | 3.21 | 1.31 |
损伤复现比 Damage replication ratio/% | 100.00 | 99.12 | 95.32 | 86.68 | 53.86 |
), ArticleFig(id=1228282211040952711, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=表1, caption=
载荷重采样损伤对比
, figureFileSmall=null, figureFileBig=null, tableContent=
采样频率 Sampling frequency fs /Hz | 512 | 256 | 100 | 50 | 25 |
|---|
损伤值 Damage value/10-11 | 4.53 | 4.49 | 4.28 | 3.71 | 2.44 |
重采样损伤值 Resampling damage value/10-11 | 4.53 | 4.45 | 4.08 | 3.21 | 1.31 |
损伤复现比 Damage replication ratio/% | 100.00 | 99.12 | 95.32 | 86.68 | 53.86 |
), ArticleFig(id=1228282211133227405, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Tab.2, caption=
PE value of each IMF component
, figureFileSmall=null, figureFileBig=null, tableContent=
本征模态函数分量 IMF component | IMF1 | IMF2 | IMF3 | IMF4 | IMF5 | IMF6 | IMF7 | IMF8 | IMF9 | IMF10 | IMF11 | IMF12 | IMF13 |
|---|
| 排列熵值PE value | 0.988 | 0.915 | 0.837 | 0.639 | 0.399 | 0.269 | 0.210 | 0.162 | 0.136 | 0.125 | 0.116 | 0.111 | 0.108 |
), ArticleFig(id=1228282211221307791, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=表2, caption=
各本征模态函数分量排列熵值
, figureFileSmall=null, figureFileBig=null, tableContent=
本征模态函数分量 IMF component | IMF1 | IMF2 | IMF3 | IMF4 | IMF5 | IMF6 | IMF7 | IMF8 | IMF9 | IMF10 | IMF11 | IMF12 | IMF13 |
|---|
| 排列熵值PE value | 0.988 | 0.915 | 0.837 | 0.639 | 0.399 | 0.269 | 0.210 | 0.162 | 0.136 | 0.125 | 0.116 | 0.111 | 0.108 |
), ArticleFig(id=1228282211309388181, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Tab.3, caption=
MSE and signal to noise ratio of different threshold calculation methods
, figureFileSmall=null, figureFileBig=null, tableContent=
不同阈值方法 Different threshold methods | 均方误差 Mean square error | 信噪比 Signal to noise ratio |
|---|
固定阈值 Fixed threshold | 2.36 | 41.05 |
无偏风险估计阈值 Unbiased risk estimation threshold | 2.43 | 40.93 |
启发式阈值 Heuristic threshold | 2.39 | 40.98 |
极大极小阈值 Maximum minimum threshold | 89.28 | 25.27 |
), ArticleFig(id=1228282211414245788, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=表3, caption=
不同阈值计算方法的均方误差和信噪比
, figureFileSmall=null, figureFileBig=null, tableContent=
不同阈值方法 Different threshold methods | 均方误差 Mean square error | 信噪比 Signal to noise ratio |
|---|
固定阈值 Fixed threshold | 2.36 | 41.05 |
无偏风险估计阈值 Unbiased risk estimation threshold | 2.43 | 40.93 |
启发式阈值 Heuristic threshold | 2.39 | 40.98 |
极大极小阈值 Maximum minimum threshold | 89.28 | 25.27 |
), ArticleFig(id=1228282211527492003, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Tab.4, caption=
Different test results of neural networks
, figureFileSmall=null, figureFileBig=null, tableContent=
序号 No. | 学习率 Learning rate | 隐藏层节点数 Number of hidden layer node | 迭代次数 Number of iterations | 数据批量大小 Data batch size | 时间步长 Time step | 训练集决定系数 Training set determination coefficient R2/% | 训练集平均绝对误差 MAE of training set EMAE | 训练集均方根误差 RMSE of training set ERMSE | 测试集决定系数 Testing set determination coefficient R2/% | 测试集平均绝对误差 MAE of testing set EMAE | 测试集均方根误差 RMSE of testing set ERMSE |
|---|
| 1 | 0.001 | 80 | 189 | 1 024 | 7 | 92.39 | 291.21 | 405.35 | 90.98 | 325.43 | 443.59 |
| 2 | 0.005 | 80 | 189 | 1 024 | 7 | 91.04 | 317.88 | 440.02 | 89.04 | 357.48 | 489.1 |
| 3 | 0.008 | 80 | 189 | 1 024 | 7 | 93.21 | 276.9 | 382.96 | 90.87 | 324.277 | 446.39 |
| 4 | 0.01 | 80 | 189 | 1 024 | 7 | 92.72 | 283.23 | 396.47 | 90.93 | 320.95 | 445.05 |
| 5 | 0.05 | 80 | 189 | 1 024 | 7 | 4.96 | 974.93 | 1 433.12 | 5.38 | 964.87 | 1 437.48 |
| 6 | 0.01 | 16 | 189 | 1 024 | 7 | 91.06 | 313.13 | 439.46 | 90.94 | 305.69 | 444.81 |
| 7 | 0.01 | 32 | 189 | 1 024 | 7 | 93.21 | 269.29 | 382.85 | 92.30 | 281.80 | 409.99 |
| 8 | 0.01 | 64 | 189 | 1 024 | 7 | 89.15 | 323.06 | 484.18 | 87.97 | 346.12 | 512.52 |
| 9 | 0.01 | 80 | 189 | 1 024 | 7 | 92.72 | 283.23 | 396.47 | 90.93 | 320.95 | 445.05 |
| 10 | 0.01 | 128 | 189 | 1 024 | 7 | 94.80 | 235.54 | 335.00 | 93.31 | 258.10 | 381.99 |
| 11 | 0.01 | 80 | 100 | 1 024 | 7 | 91.15 | 309.51 | 437.23 | 91.15 | 304.82 | 439.6 |
| 12 | 0.01 | 80 | 189 | 1 024 | 7 | 92.72 | 283.23 | 396.47 | 90.93 | 320.95 | 445.05 |
| 13 | 0.01 | 80 | 300 | 1 024 | 7 | 92.03 | 290.49 | 414.81 | 91.22 | 299.5 | 437.72 |
| 14 | 0.01 | 80 | 400 | 1 024 | 7 | 93.33 | 263.09 | 379.52 | 91.99 | 281.27 | 418.23 |
| 15 | 0.01 | 80 | 500 | 1 024 | 7 | 94.05 | 251.95 | 358.46 | 91.84 | 293.56 | 421.93 |
| 16 | 0.01 | 80 | 189 | 128 | 7 | 94.92 | 232.57 | 331.31 | 92.17 | 258.52 | 413.42 |
| 17 | 0.01 | 80 | 189 | 256 | 7 | 95.66 | 216.05 | 306.15 | 93.01 | 266.02 | 390.61 |
| 18 | 0.01 | 80 | 189 | 512 | 7 | 94.22 | 251.81 | 353.31 | 91.83 | 302.14 | 422.17 |
| 19 | 0.01 | 80 | 189 | 1 024 | 7 | 92.72 | 283.23 | 396.47 | 90.93 | 320.95 | 445.05 |
| 20 | 0.01 | 80 | 189 | 2 048 | 7 | 91.08 | 307.19 | 439.05 | 89.81 | 335.08 | 471.52 |
| 21 | 0.01 | 80 | 189 | 1 024 | 5 | 91.70 | 304.36 | 423.50 | 90.30 | 334.98 | 460.21 |
| 22 | 0.01 | 80 | 189 | 1 024 | 6 | 93.53 | 264.10 | 373.74 | 91.52 | 303.06 | 430.22 |
| 23 | 0.01 | 80 | 189 | 1 024 | 7 | 92.72 | 283.23 | 396.47 | 90.93 | 320.95 | 445.05 |
| 24 | 0.01 | 80 | 189 | 1 024 | 8 | 92.84 | 282.61 | 393.20 | 91.02 | 320.66 | 442.77 |
| 25 | 0.01 | 80 | 189 | 1 024 | 9 | 90.81 | 319.61 | 445.42 | 89.97 | 340.35 | 467.82 |
), ArticleFig(id=1228282211628155301, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=表4, caption=
神经网络不同试验结果
, figureFileSmall=null, figureFileBig=null, tableContent=
序号 No. | 学习率 Learning rate | 隐藏层节点数 Number of hidden layer node | 迭代次数 Number of iterations | 数据批量大小 Data batch size | 时间步长 Time step | 训练集决定系数 Training set determination coefficient R2/% | 训练集平均绝对误差 MAE of training set EMAE | 训练集均方根误差 RMSE of training set ERMSE | 测试集决定系数 Testing set determination coefficient R2/% | 测试集平均绝对误差 MAE of testing set EMAE | 测试集均方根误差 RMSE of testing set ERMSE |
|---|
| 1 | 0.001 | 80 | 189 | 1 024 | 7 | 92.39 | 291.21 | 405.35 | 90.98 | 325.43 | 443.59 |
| 2 | 0.005 | 80 | 189 | 1 024 | 7 | 91.04 | 317.88 | 440.02 | 89.04 | 357.48 | 489.1 |
| 3 | 0.008 | 80 | 189 | 1 024 | 7 | 93.21 | 276.9 | 382.96 | 90.87 | 324.277 | 446.39 |
| 4 | 0.01 | 80 | 189 | 1 024 | 7 | 92.72 | 283.23 | 396.47 | 90.93 | 320.95 | 445.05 |
| 5 | 0.05 | 80 | 189 | 1 024 | 7 | 4.96 | 974.93 | 1 433.12 | 5.38 | 964.87 | 1 437.48 |
| 6 | 0.01 | 16 | 189 | 1 024 | 7 | 91.06 | 313.13 | 439.46 | 90.94 | 305.69 | 444.81 |
| 7 | 0.01 | 32 | 189 | 1 024 | 7 | 93.21 | 269.29 | 382.85 | 92.30 | 281.80 | 409.99 |
| 8 | 0.01 | 64 | 189 | 1 024 | 7 | 89.15 | 323.06 | 484.18 | 87.97 | 346.12 | 512.52 |
| 9 | 0.01 | 80 | 189 | 1 024 | 7 | 92.72 | 283.23 | 396.47 | 90.93 | 320.95 | 445.05 |
| 10 | 0.01 | 128 | 189 | 1 024 | 7 | 94.80 | 235.54 | 335.00 | 93.31 | 258.10 | 381.99 |
| 11 | 0.01 | 80 | 100 | 1 024 | 7 | 91.15 | 309.51 | 437.23 | 91.15 | 304.82 | 439.6 |
| 12 | 0.01 | 80 | 189 | 1 024 | 7 | 92.72 | 283.23 | 396.47 | 90.93 | 320.95 | 445.05 |
| 13 | 0.01 | 80 | 300 | 1 024 | 7 | 92.03 | 290.49 | 414.81 | 91.22 | 299.5 | 437.72 |
| 14 | 0.01 | 80 | 400 | 1 024 | 7 | 93.33 | 263.09 | 379.52 | 91.99 | 281.27 | 418.23 |
| 15 | 0.01 | 80 | 500 | 1 024 | 7 | 94.05 | 251.95 | 358.46 | 91.84 | 293.56 | 421.93 |
| 16 | 0.01 | 80 | 189 | 128 | 7 | 94.92 | 232.57 | 331.31 | 92.17 | 258.52 | 413.42 |
| 17 | 0.01 | 80 | 189 | 256 | 7 | 95.66 | 216.05 | 306.15 | 93.01 | 266.02 | 390.61 |
| 18 | 0.01 | 80 | 189 | 512 | 7 | 94.22 | 251.81 | 353.31 | 91.83 | 302.14 | 422.17 |
| 19 | 0.01 | 80 | 189 | 1 024 | 7 | 92.72 | 283.23 | 396.47 | 90.93 | 320.95 | 445.05 |
| 20 | 0.01 | 80 | 189 | 2 048 | 7 | 91.08 | 307.19 | 439.05 | 89.81 | 335.08 | 471.52 |
| 21 | 0.01 | 80 | 189 | 1 024 | 5 | 91.70 | 304.36 | 423.50 | 90.30 | 334.98 | 460.21 |
| 22 | 0.01 | 80 | 189 | 1 024 | 6 | 93.53 | 264.10 | 373.74 | 91.52 | 303.06 | 430.22 |
| 23 | 0.01 | 80 | 189 | 1 024 | 7 | 92.72 | 283.23 | 396.47 | 90.93 | 320.95 | 445.05 |
| 24 | 0.01 | 80 | 189 | 1 024 | 8 | 92.84 | 282.61 | 393.20 | 91.02 | 320.66 | 442.77 |
| 25 | 0.01 | 80 | 189 | 1 024 | 9 | 90.81 | 319.61 | 445.42 | 89.97 | 340.35 | 467.82 |
), ArticleFig(id=1228282211741401515, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Tab.5, caption=
Comparison of accuracy in predicting wheel center forces by different neural network models
, figureFileSmall=null, figureFileBig=null, tableContent=
神经网络模型 Neural network model | 轮心力 Wheel center force | 决定系数 Determination coefficient R2 | 均方根误差 RMSE ERMSE | 平均绝对误差 MAE EMAE | 计算时间 Computational time/s | 神经网络模型 Neural network model | 轮心力 Wheel center force | 决定系数 Determination coefficient R2 | 均方根误差 RMSE ERMSE | 平均绝对误差 MAE EMAE | 计算时间 Computational time/s |
|---|
| 长短期记忆LSTM | Fx | 0.872 5 | 403.95 | 282.09 | 186.01 | 长短期记忆-自注意力机制 LSTM-self-attention mechanism | Fx | 0.850 7 | 437.18 | 290.24 | 213.45 |
| Fy | 0.838 4 | 334.57 | 234.49 | Fy | 0.839 2 | 333.82 | 220.06 |
| Fz | 0.975 6 | 230.37 | 161.32 | Fz | 0.966 7 | 269.50 | 175.09 |
| Mx | 0.877 3 | 107.91 | 71.05 | Mx | 0.852 1 | 118.54 | 81.01 |
| My | 0.903 0 | 109.33 | 75.66 | My | 0.879 7 | 121.82 | 81.87 |
| Mz | 0.796 4 | 80.08 | 46.98 | Mz | 0.743 4 | 68.55 | 43.29 |
长短期记忆-多头注意力机制 LSTM-multi-head attention mechanism | Fx | 0.871 0 | 406.39 | 384.84 | 221.92 | 带有外部输入的非线性自回 归模型 NARX model | Fx | 0.794 8 | 929.09 | 487.82 | 295.21 |
| Fy | 0.776 6 | 393.43 | 260.70 | Fy | 0.695 7 | 663.80 | 391.56 |
| Fz | 0.971 6 | 248.92 | 177.37 | Fz | 0.990 3 | 219.58 | 147.04 |
| Mx | 0.875 9 | 108.56 | 73.02 | Mx | 0.676 3 | 165.43 | 103.14 |
| My | 0.899 8 | 111.17 | 74.32 | My | 0.429 0 | 228.22 | 113.95 |
| Mz | 0.734 6 | 69.71 | 45.32 | Mz | 0.799 5 | 75.77 | 52.45 |
多层感知机 MLP | Fx | 0.761 1 | 553.02 | 362.37 | 659.39 | 反向传播模型 BP model | Fx | 0.761 1 | 553.02 | 362.37 | 2 523.23 |
| Fy | 0.663 8 | 656.06 | 45.07 | Fy | 0.778 4 | 391.85 | 263.99 |
| Fz | 0.629 2 | 506.86 | 391.75 | Fz | 0.491 6 | 1 053.63 | 565.93 |
| Mx | 0.431 2 | 1 114.50 | 595.60 | Mx | 0.767 5 | 148.61 | 95.82 |
| My | 0.694 4 | 170.38 | 109.18 | My | 0.888 8 | 117.08 | 72.08 |
| Mz | 0.807 1 | 154.23 | 97.81 | Mz | 0.801 7 | 60.27 | 37.31 |
), ArticleFig(id=1228282213146493360, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=表5, caption=
不同神经网络模型预测轮心力精度对比
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神经网络模型 Neural network model | 轮心力 Wheel center force | 决定系数 Determination coefficient R2 | 均方根误差 RMSE ERMSE | 平均绝对误差 MAE EMAE | 计算时间 Computational time/s | 神经网络模型 Neural network model | 轮心力 Wheel center force | 决定系数 Determination coefficient R2 | 均方根误差 RMSE ERMSE | 平均绝对误差 MAE EMAE | 计算时间 Computational time/s |
|---|
| 长短期记忆LSTM | Fx | 0.872 5 | 403.95 | 282.09 | 186.01 | 长短期记忆-自注意力机制 LSTM-self-attention mechanism | Fx | 0.850 7 | 437.18 | 290.24 | 213.45 |
| Fy | 0.838 4 | 334.57 | 234.49 | Fy | 0.839 2 | 333.82 | 220.06 |
| Fz | 0.975 6 | 230.37 | 161.32 | Fz | 0.966 7 | 269.50 | 175.09 |
| Mx | 0.877 3 | 107.91 | 71.05 | Mx | 0.852 1 | 118.54 | 81.01 |
| My | 0.903 0 | 109.33 | 75.66 | My | 0.879 7 | 121.82 | 81.87 |
| Mz | 0.796 4 | 80.08 | 46.98 | Mz | 0.743 4 | 68.55 | 43.29 |
长短期记忆-多头注意力机制 LSTM-multi-head attention mechanism | Fx | 0.871 0 | 406.39 | 384.84 | 221.92 | 带有外部输入的非线性自回 归模型 NARX model | Fx | 0.794 8 | 929.09 | 487.82 | 295.21 |
| Fy | 0.776 6 | 393.43 | 260.70 | Fy | 0.695 7 | 663.80 | 391.56 |
| Fz | 0.971 6 | 248.92 | 177.37 | Fz | 0.990 3 | 219.58 | 147.04 |
| Mx | 0.875 9 | 108.56 | 73.02 | Mx | 0.676 3 | 165.43 | 103.14 |
| My | 0.899 8 | 111.17 | 74.32 | My | 0.429 0 | 228.22 | 113.95 |
| Mz | 0.734 6 | 69.71 | 45.32 | Mz | 0.799 5 | 75.77 | 52.45 |
多层感知机 MLP | Fx | 0.761 1 | 553.02 | 362.37 | 659.39 | 反向传播模型 BP model | Fx | 0.761 1 | 553.02 | 362.37 | 2 523.23 |
| Fy | 0.663 8 | 656.06 | 45.07 | Fy | 0.778 4 | 391.85 | 263.99 |
| Fz | 0.629 2 | 506.86 | 391.75 | Fz | 0.491 6 | 1 053.63 | 565.93 |
| Mx | 0.431 2 | 1 114.50 | 595.60 | Mx | 0.767 5 | 148.61 | 95.82 |
| My | 0.694 4 | 170.38 | 109.18 | My | 0.888 8 | 117.08 | 72.08 |
| Mz | 0.807 1 | 154.23 | 97.81 | Mz | 0.801 7 | 60.27 | 37.31 |
), ArticleFig(id=1228282213301682613, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Tab.6, caption=
Prediction accuracy of wheel center forces
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轮心力 Wheel center force | 数据集 Data set | 预测值损伤 Prediction value damage | 真实值损伤 Actual value damage | 损伤相对误差 Relative error of damage/% |
|---|
| Fx | 训练集 Training set | 4.82×10-5 | 4.96×10-5 | 2.80 |
测试集 Testing set | 2.73×10-5 | 3.11×10-5 | 12.17 |
| Fy | 训练集 Training set | 5.65×10-7 | 6.08×10-7 | 6.98 |
测试集 Testing set | 6.95×10-7 | 7.90×10-7 | 12.00 |
| Fz | 训练集 Training set | 1.71×10-4 | 1.76×10-4 | 3.14 |
测试集 Testing set | 1.90×10-4 | 1.97×10-4 | 3.43 |
| Mx | 训练集 Training set | 3.81×10-9 | 4.57×10-9 | 16.66 |
测试集 Testing set | 6.09×10-9 | 6.35×10-9 | 4.07 |
| My | 训练集 Training set | 6.17×10-9 | 7.10×10-9 | 12.99 |
测试集 Testing set | 1.16×10-8 | 1.44×10-8 | 18.98 |
| Mz | 训练集 Training set | 1.52×10-10 | 1.77×10-10 | 13.83 |
测试集 Testing set | 2.97×10-10 | 3.20×10-10 | 6.94 |
), ArticleFig(id=1228282213419123130, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=表6, caption=
轮心力预测精度
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轮心力 Wheel center force | 数据集 Data set | 预测值损伤 Prediction value damage | 真实值损伤 Actual value damage | 损伤相对误差 Relative error of damage/% |
|---|
| Fx | 训练集 Training set | 4.82×10-5 | 4.96×10-5 | 2.80 |
测试集 Testing set | 2.73×10-5 | 3.11×10-5 | 12.17 |
| Fy | 训练集 Training set | 5.65×10-7 | 6.08×10-7 | 6.98 |
测试集 Testing set | 6.95×10-7 | 7.90×10-7 | 12.00 |
| Fz | 训练集 Training set | 1.71×10-4 | 1.76×10-4 | 3.14 |
测试集 Testing set | 1.90×10-4 | 1.97×10-4 | 3.43 |
| Mx | 训练集 Training set | 3.81×10-9 | 4.57×10-9 | 16.66 |
测试集 Testing set | 6.09×10-9 | 6.35×10-9 | 4.07 |
| My | 训练集 Training set | 6.17×10-9 | 7.10×10-9 | 12.99 |
测试集 Testing set | 1.16×10-8 | 1.44×10-8 | 18.98 |
| Mz | 训练集 Training set | 1.52×10-10 | 1.77×10-10 | 13.83 |
测试集 Testing set | 2.97×10-10 | 3.20×10-10 | 6.94 |
), ArticleFig(id=1228282213486231999, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Tab.7, caption=
Correlation coefficients and coherence coefficients between input channels and six-component forces
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输入通道 Input channel | 相关系数Correlation coefficient | 相干系数Coherence coefficient |
|---|
| Fx | Fy | Fz | Mx | My | Mz | Fx | Fy | Fz | Mx | My | Mz |
|---|
| Acc1@A_X_WC_LF | 0.06 | -0.02 | 0.11 | 0.04 | 0.09 | 0.05 | 0.60 | 0.09 | 0.14 | 0.12 | 0.39 | 0.20 |
| Acc1@A_Y_WC_LF | 0.09 | -0.27 | -0.02 | -0.21 | 0.02 | -0.21 | 0.13 | 0.20 | 0.10 | 0.12 | 0.07 | 0.14 |
| Acc1@A_Z_WC_LF | 0.06 | 0.09 | 0.21 | 0.07 | -0.01 | -0.12 | 0.12 | 0.19 | 0.67 | 0.26 | 0.06 | 0.14 |
| Acc1@A_X_WC_RF | -0.09 | 0.02 | -0.06 | -0.02 | 0.10 | 0.05 | 0.06 | 0.02 | 0.03 | 0.03 | 0.06 | 0.04 |
| Acc1@A_Y_WC_RF | 0.06 | -0.19 | -0.03 | -0.22 | -0.01 | -0.09 | 0.04 | 0.09 | 0.04 | 0.07 | 0.02 | 0.08 |
| Acc1@A_Z_WC_RF | -0.04 | 0.03 | -0.03 | 0.00 | -0.01 | 0.00 | 0.02 | 0.03 | 0.05 | 0.05 | 0.03 | 0.03 |
| Acc1@A_X_WC_LR | -0.09 | 0.00 | -0.02 | -0.02 | 0.10 | 0.03 | 0.08 | 0.05 | 0.05 | 0.05 | 0.05 | 0.04 |
| Acc1@A_Y_WC_LR | 0.05 | -0.14 | -0.03 | -0.15 | 0.00 | -0.14 | 0.04 | 0.06 | 0.07 | 0.06 | 0.03 | 0.05 |
| Acc1@A_Z_WC_LR | 0.01 | -0.02 | 0.03 | -0.01 | -0.01 | 0.01 | 0.04 | 0.06 | 0.09 | 0.07 | 0.02 | 0.04 |
| Acc1@A_X_WC_RR | -0.09 | 0.02 | -0.03 | 0.02 | 0.08 | 0.03 | 0.03 | 0.03 | 0.02 | 0.02 | 0.03 | 0.02 |
| Acc1@A_Y_WC_RR | 0.07 | -0.16 | -0.02 | -0.17 | -0.01 | -0.12 | 0.02 | 0.03 | 0.03 | 0.03 | 0.02 | 0.03 |
| Acc1@A_Z_WC_RR | -0.01 | 0.02 | 0.00 | 0.02 | -0.01 | -0.01 | 0.01 | 0.03 | 0.02 | 0.02 | 0.01 | 0.01 |
| Acc2@A_X_CMass | 0.66 | -0.08 | 0.15 | -0.03 | -0.78 | -0.26 | 0.14 | 0.04 | 0.05 | 0.03 | 0.10 | 0.05 |
| Acc2@A_Y_CMass | -0.09 | 0.57 | 0.18 | 0.62 | -0.06 | 0.41 | 0.02 | 0.11 | 0.06 | 0.09 | 0.01 | 0.06 |
| Acc2@A_Z_CMass | 0.09 | -0.02 | 0.19 | 0.03 | -0.05 | -0.07 | 0.04 | 0.04 | 0.07 | 0.05 | 0.03 | 0.04 |
| DIS@DIS_LF | -0.32 | -0.16 | -0.58 | -0.27 | 0.37 | 0.09 | 0.13 | 0.16 | 0.56 | 0.24 | 0.06 | 0.14 |
| DIS@DIS_RF | -0.40 | 0.23 | 0.09 | 0.26 | 0.39 | 0.34 | 0.02 | 0.04 | 0.07 | 0.05 | 0.04 | 0.03 |
| DIS@DIS_LR | 0.29 | -0.24 | 0.24 | -0.16 | -0.30 | -0.27 | 0.04 | 0.06 | 0.09 | 0.06 | 0.03 | 0.04 |
| DIS@DIS_RR | 0.22 | 0.23 | -0.07 | 0.20 | -0.29 | 0.09 | 0.01 | 0.03 | 0.04 | 0.03 | 0.02 | 0.01 |
), ArticleFig(id=1228282213578506690, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=表7, caption=
输入通道与六分力的相关系数与相干系数
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输入通道 Input channel | 相关系数Correlation coefficient | 相干系数Coherence coefficient |
|---|
| Fx | Fy | Fz | Mx | My | Mz | Fx | Fy | Fz | Mx | My | Mz |
|---|
| Acc1@A_X_WC_LF | 0.06 | -0.02 | 0.11 | 0.04 | 0.09 | 0.05 | 0.60 | 0.09 | 0.14 | 0.12 | 0.39 | 0.20 |
| Acc1@A_Y_WC_LF | 0.09 | -0.27 | -0.02 | -0.21 | 0.02 | -0.21 | 0.13 | 0.20 | 0.10 | 0.12 | 0.07 | 0.14 |
| Acc1@A_Z_WC_LF | 0.06 | 0.09 | 0.21 | 0.07 | -0.01 | -0.12 | 0.12 | 0.19 | 0.67 | 0.26 | 0.06 | 0.14 |
| Acc1@A_X_WC_RF | -0.09 | 0.02 | -0.06 | -0.02 | 0.10 | 0.05 | 0.06 | 0.02 | 0.03 | 0.03 | 0.06 | 0.04 |
| Acc1@A_Y_WC_RF | 0.06 | -0.19 | -0.03 | -0.22 | -0.01 | -0.09 | 0.04 | 0.09 | 0.04 | 0.07 | 0.02 | 0.08 |
| Acc1@A_Z_WC_RF | -0.04 | 0.03 | -0.03 | 0.00 | -0.01 | 0.00 | 0.02 | 0.03 | 0.05 | 0.05 | 0.03 | 0.03 |
| Acc1@A_X_WC_LR | -0.09 | 0.00 | -0.02 | -0.02 | 0.10 | 0.03 | 0.08 | 0.05 | 0.05 | 0.05 | 0.05 | 0.04 |
| Acc1@A_Y_WC_LR | 0.05 | -0.14 | -0.03 | -0.15 | 0.00 | -0.14 | 0.04 | 0.06 | 0.07 | 0.06 | 0.03 | 0.05 |
| Acc1@A_Z_WC_LR | 0.01 | -0.02 | 0.03 | -0.01 | -0.01 | 0.01 | 0.04 | 0.06 | 0.09 | 0.07 | 0.02 | 0.04 |
| Acc1@A_X_WC_RR | -0.09 | 0.02 | -0.03 | 0.02 | 0.08 | 0.03 | 0.03 | 0.03 | 0.02 | 0.02 | 0.03 | 0.02 |
| Acc1@A_Y_WC_RR | 0.07 | -0.16 | -0.02 | -0.17 | -0.01 | -0.12 | 0.02 | 0.03 | 0.03 | 0.03 | 0.02 | 0.03 |
| Acc1@A_Z_WC_RR | -0.01 | 0.02 | 0.00 | 0.02 | -0.01 | -0.01 | 0.01 | 0.03 | 0.02 | 0.02 | 0.01 | 0.01 |
| Acc2@A_X_CMass | 0.66 | -0.08 | 0.15 | -0.03 | -0.78 | -0.26 | 0.14 | 0.04 | 0.05 | 0.03 | 0.10 | 0.05 |
| Acc2@A_Y_CMass | -0.09 | 0.57 | 0.18 | 0.62 | -0.06 | 0.41 | 0.02 | 0.11 | 0.06 | 0.09 | 0.01 | 0.06 |
| Acc2@A_Z_CMass | 0.09 | -0.02 | 0.19 | 0.03 | -0.05 | -0.07 | 0.04 | 0.04 | 0.07 | 0.05 | 0.03 | 0.04 |
| DIS@DIS_LF | -0.32 | -0.16 | -0.58 | -0.27 | 0.37 | 0.09 | 0.13 | 0.16 | 0.56 | 0.24 | 0.06 | 0.14 |
| DIS@DIS_RF | -0.40 | 0.23 | 0.09 | 0.26 | 0.39 | 0.34 | 0.02 | 0.04 | 0.07 | 0.05 | 0.04 | 0.03 |
| DIS@DIS_LR | 0.29 | -0.24 | 0.24 | -0.16 | -0.30 | -0.27 | 0.04 | 0.06 | 0.09 | 0.06 | 0.03 | 0.04 |
| DIS@DIS_RR | 0.22 | 0.23 | -0.07 | 0.20 | -0.29 | 0.09 | 0.01 | 0.03 | 0.04 | 0.03 | 0.02 | 0.01 |
), ArticleFig(id=1228282213662392775, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Tab.8, caption=
Wheel center force results predicted by the compressed input channels model
, figureFileSmall=null, figureFileBig=null, tableContent=
轮心力 Wheel center force | 决定系数 Determination coefficient R2 | 均方根误差 RMSE ERMSE | 平均绝对误差 MAE EMAE | 损伤相对误差 Relative error of damage/% | 计算时间 Computational time/s |
|---|
| Fx | 0.898 6 | 360.16 | 250.20 | 1.28 | 150.30 |
| Fy | 0.794 6 | 377.20 | 249.64 | 3.29 |
| Fz | 0.916 8 | 426.07 | 292.91 | 7.61 |
| Mx | 0.832 8 | 125.99 | 82.77 | 15.29 |
| My | 0.962 4 | 68.06 | 48.59 | 13.28 |
| Mz | 0.825 0 | 56.60 | 35.62 | 13.16 |
), ArticleFig(id=1228282213763056072, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=表8, caption=
压缩输入通道模型预测轮心力结果
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轮心力 Wheel center force | 决定系数 Determination coefficient R2 | 均方根误差 RMSE ERMSE | 平均绝对误差 MAE EMAE | 损伤相对误差 Relative error of damage/% | 计算时间 Computational time/s |
|---|
| Fx | 0.898 6 | 360.16 | 250.20 | 1.28 | 150.30 |
| Fy | 0.794 6 | 377.20 | 249.64 | 3.29 |
| Fz | 0.916 8 | 426.07 | 292.91 | 7.61 |
| Mx | 0.832 8 | 125.99 | 82.77 | 15.29 |
| My | 0.962 4 | 68.06 | 48.59 | 13.28 |
| Mz | 0.825 0 | 56.60 | 35.62 | 13.16 |
), ArticleFig(id=1228282213914051022, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=EN, label=Tab.9, caption=
Wheel center force accuracy predicted by minimum dataset model
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数据集 Data set | 轮心力 Wheel center force | 决定系数 Coefficient of determination R2 | 均方根误差 RMSE ERMSE | 平均绝对误差 MAE EMAE | 损伤相对误差 Relative error of damage/% | 计算时间 Computational time/s |
|---|
原始行驶路线 Original driving route | Fx | 0.879 6 | 392.57 | 261.89 | 8.03 | 132.33 |
| Fy | 0.746 4 | 419.12 | 268 | 0.51 |
| Fz | 0.912 1 | 438.13 | 293.80 | 17.25 |
| Mx | 0.793 3 | 110.95 | 90.87 | 8.51 |
| My | 0.958 2 | 71.77 | 53.12 | 18.18 |
| Mz | 0.793 6 | 61.48 | 36.72 | 8.46 |
随机行驶路线1 Random driving route 1 | Fx | 0.880 0 | 391.94 | 261.79 | -6.74 | 134.23 |
| Fy | 0.746 6 | 419.06 | 268.07 | 4.13 |
| Fz | 0.912 0 | 438.26 | 300.78 | 17.25 |
| Mx | 0.793 5 | 140.05 | 90.86 | 6.14 |
| My | 0.958 6 | 71.43 | 53.10 | 18.75 |
| Mz | 0.793 4 | 61.51 | 36.74 | 5.53 |
随机行驶路线2 Random driving route 2 | Fx | 0.878 7 | 394.03 | 262.62 | 5.77 | 135.41 |
| Fy | 0.745 6 | 419.83 | 268.21 | 2.44 |
| Fz | 0.911 6 | 439.48 | 301.18 | 16.75 |
| Mx | 0.792 9 | 140.24 | 90.89 | 10.26 |
| My | 0.956 3 | 73.38 | 53.43 | 18.49 |
| Mz | 0.792 1 | 61.70 | 36.80 | 8.54 |
随机行驶路线3 Random driving route 3 | Fx | 0.878 6 | 394.23 | 262.58 | 4.93 | 137.02 |
| Fy | 0.746 4 | 419.26 | 268.21 | 1.62 |
| Fz | 0.911 4 | 439.76 | 301.25 | 17.17 |
| Mx | 0.793 3 | 140.13 | 90.92 | 3.19 |
| My | 0.955 8 | 73.87 | 53.44 | 18.05 |
| Mz | 0.792 9 | 61.59 | 36.79 | -14.19 |
), ArticleFig(id=1228282214035685843, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282191663268510, language=CN, label=表9, caption=
最小数据集模型预测轮心力精度
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数据集 Data set | 轮心力 Wheel center force | 决定系数 Coefficient of determination R2 | 均方根误差 RMSE ERMSE | 平均绝对误差 MAE EMAE | 损伤相对误差 Relative error of damage/% | 计算时间 Computational time/s |
|---|
原始行驶路线 Original driving route | Fx | 0.879 6 | 392.57 | 261.89 | 8.03 | 132.33 |
| Fy | 0.746 4 | 419.12 | 268 | 0.51 |
| Fz | 0.912 1 | 438.13 | 293.80 | 17.25 |
| Mx | 0.793 3 | 110.95 | 90.87 | 8.51 |
| My | 0.958 2 | 71.77 | 53.12 | 18.18 |
| Mz | 0.793 6 | 61.48 | 36.72 | 8.46 |
随机行驶路线1 Random driving route 1 | Fx | 0.880 0 | 391.94 | 261.79 | -6.74 | 134.23 |
| Fy | 0.746 6 | 419.06 | 268.07 | 4.13 |
| Fz | 0.912 0 | 438.26 | 300.78 | 17.25 |
| Mx | 0.793 5 | 140.05 | 90.86 | 6.14 |
| My | 0.958 6 | 71.43 | 53.10 | 18.75 |
| Mz | 0.793 4 | 61.51 | 36.74 | 5.53 |
随机行驶路线2 Random driving route 2 | Fx | 0.878 7 | 394.03 | 262.62 | 5.77 | 135.41 |
| Fy | 0.745 6 | 419.83 | 268.21 | 2.44 |
| Fz | 0.911 6 | 439.48 | 301.18 | 16.75 |
| Mx | 0.792 9 | 140.24 | 90.89 | 10.26 |
| My | 0.956 3 | 73.38 | 53.43 | 18.49 |
| Mz | 0.792 1 | 61.70 | 36.80 | 8.54 |
随机行驶路线3 Random driving route 3 | Fx | 0.878 6 | 394.23 | 262.58 | 4.93 | 137.02 |
| Fy | 0.746 4 | 419.26 | 268.21 | 1.62 |
| Fz | 0.911 4 | 439.76 | 301.25 | 17.17 |
| Mx | 0.793 3 | 140.13 | 90.92 | 3.19 |
| My | 0.955 8 | 73.87 | 53.44 | 18.05 |
| Mz | 0.792 9 | 61.59 | 36.79 | -14.19 |
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