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Driving style recognition plays a crucial role in enhancing personalized driving experiences and optimizing energy utilization in smart connected vehicles. Considering the relationship between different road environments and driving styles, a cascade delivery framework is designed to fully utilize real-world natural driving data and segment the data into events with distinct physical meanings. Using driver IDs as pseudo-labels, an XGBoost model learns differences in driving styles, identifying the key features and weights critical for recognition. Following the principles of a hybrid expert system, the WK-means algorithm clusters driving styles under varying conditions, ultimately generating driving scores to evaluate driver performance. The statistical analysis of the clustered data shows that this method effectively recognizes drivers with diverse driving styles, which lays the foundation for the further development of intelligent networked vehicle technology.
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*, columnId=1189975937962807433, journalTitle=汽车文摘, columnName=智能网联汽车场景感知与智能体验技术专题, runingTitle=null, highlight=null, articleAbstract=
驾驶风格识别对于提升智能网联汽车个性化驾驶体验和优化能源利用具有重要意义。考虑到不同道路环境与不同驾驶风格之间的耦合关系,设计了一个级联传递框架充分利用采集的实车自然驾驶数据,将数据分割成不同物理意义的事件。以驾驶员ID作为伪标签,建立XGBoost模型从中学习驾驶风格的差异性,确定对于驾驶风格识别重要的特征及权重。基于混合专家系统的思想,采用WK-means算法对不同环境下的驾驶风格进行聚类,最终得到驾驶分数来衡量驾驶员的表现。对聚类后各类驾驶员驾驶数据的统计分析表明,该方法能有效实现不同驾驶风格驾驶员的聚类,为智能网联汽车技术的进一步发展奠定了基础。
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3 智能汽车安全技术全国重点实验室,重庆市 401133)])], figs=[ArticleFig(id=1189980095826686382, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1189975938487095436, language=EN, label=null, caption=null, figureFileSmall=0/ePbdJRjS6NAzLCP3wcSQ==, figureFileBig=nxujfMlO2RR4vcKZk93iVA==, tableContent=null), ArticleFig(id=1189980095881212335, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1189975938487095436, language=CN, label=图1, caption=
基于级联传递框架的事件划分结构, figureFileSmall=0/ePbdJRjS6NAzLCP3wcSQ==, figureFileBig=nxujfMlO2RR4vcKZk93iVA==, tableContent=null), ArticleFig(id=1189980095960904112, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1189975938487095436, language=EN, label=null, caption=null, figureFileSmall=mw6zuXDjb2F4V0kbqr6bTw==, figureFileBig=IkNzq7kkYPvF6a4Eczomww==, tableContent=null), ArticleFig(id=1189980096011235761, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1189975938487095436, language=CN, label=图2, caption=
D事件特征层次聚类的部分结果, figureFileSmall=mw6zuXDjb2F4V0kbqr6bTw==, figureFileBig=IkNzq7kkYPvF6a4Eczomww==, tableContent=null), ArticleFig(id=1189980096065761714, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1189975938487095436, language=EN, label=null, caption=null, figureFileSmall=dZ+ewbCf10ZdpyA6V2C0xA==, figureFileBig=OsylQAdH0tX8ydp2PRONTA==, tableContent=null), ArticleFig(id=1189980096120287667, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1189975938487095436, language=CN, label=图3, caption=
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聚类方法比较, figureFileSmall=vCLU8+hQlYzf9ae6ZF5ufQ==, figureFileBig=t4P8hKWNK9/V/iBQJsEXLg==, tableContent=null), ArticleFig(id=1189980096292254134, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1189975938487095436, language=EN, label=null, caption=null, figureFileSmall=5XxwmhajW5ENm8zg+hPSvA==, figureFileBig=AVCKrL9wxfsguji59Btypg==, tableContent=null), ArticleFig(id=1189980096350974391, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1189975938487095436, language=CN, label=图5, caption=
不同粒度事件下驾驶分数直方图和总体驾驶分数, figureFileSmall=5XxwmhajW5ENm8zg+hPSvA==, figureFileBig=AVCKrL9wxfsguji59Btypg==, tableContent=null), ArticleFig(id=1189980096405500344, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1189975938487095436, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 采集信号中文名称 | 采集信号英文名称 | 信号说明 |
| 车速ESP* | ESP_VehicleSpeed | 0~360 km/h |
| 加速踏板 | EMS_AccPedal | 0°~90° |
| 挡位 | TCU_ActualGear | |
| 横加速度 | ESP_LatAccel | |
| 纵加速度 | ESP_LongAccel | |
), ArticleFig(id=1189980096485192121, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1189975938487095436, language=CN, label=表1, caption=
部分车辆驾驶参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 采集信号中文名称 | 采集信号英文名称 | 信号说明 |
| 车速ESP* | ESP_VehicleSpeed | 0~360 km/h |
| 加速踏板 | EMS_AccPedal | 0°~90° |
| 挡位 | TCU_ActualGear | |
| 横加速度 | ESP_LatAccel | |
| 纵加速度 | ESP_LongAccel | |
), ArticleFig(id=1189980096548106682, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1189975938487095436, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 特征名称 | 缩写 | 定义 |
| 1 | 平均值 | mean | $ Y_{\text {mean }}=\frac{1}{n} \sum_{i=1}^{n} x_{i}$ |
| 2 | 最大值 | max | $ Y_{\max }=\max \left(x_{i}\right)$ |
| 3 | 标准差 | std | $ Y_{s t d}=\sqrt{\frac{1}{n} \sum_{i=1}^{n}\left(x_{i}-Y_{m e a n}\right)^{2}}$ |
), ArticleFig(id=1189980096619409851, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1189975938487095436, language=CN, label=表2, caption=
部分基于统计函数的特征提取方法
, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 特征名称 | 缩写 | 定义 |
| 1 | 平均值 | mean | $ Y_{\text {mean }}=\frac{1}{n} \sum_{i=1}^{n} x_{i}$ |
| 2 | 最大值 | max | $ Y_{\max }=\max \left(x_{i}\right)$ |
| 3 | 标准差 | std | $ Y_{s t d}=\sqrt{\frac{1}{n} \sum_{i=1}^{n}\left(x_{i}-Y_{m e a n}\right)^{2}}$ |
), ArticleFig(id=1189980096673935804, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1189975938487095436, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 特征名 | 缩写 | 定义 |
| 1 | 峰度 | kurt | $ Y_{\text {kurt }}=\frac{\sum_{i=1}^{n}\left(x_{i}-Y_{\text {mean }}\right)^{4}}{(n-1) Y_{\text {std }}^{4}}$ |
| 2 | 偏度 | skew | $ Y_{\text {skew }}=\frac{\sum_{i=1}^{n}\left(x_{i}-Y_{\text {mean }}\right)^{3}}{(n-1) Y_{\text {std }}^{3}}$ |
| 3 | 频谱熵 | spectral entropy | $ Y_{\text {spectral_entropy }}=-\sum_{k=1}^{m} P(k) \log _{2} P(k)$ |
), ArticleFig(id=1189980096732656061, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1189975938487095436, language=CN, label=表3, caption=
部分基于信号处理的特征提取方法
, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 特征名 | 缩写 | 定义 |
| 1 | 峰度 | kurt | $ Y_{\text {kurt }}=\frac{\sum_{i=1}^{n}\left(x_{i}-Y_{\text {mean }}\right)^{4}}{(n-1) Y_{\text {std }}^{4}}$ |
| 2 | 偏度 | skew | $ Y_{\text {skew }}=\frac{\sum_{i=1}^{n}\left(x_{i}-Y_{\text {mean }}\right)^{3}}{(n-1) Y_{\text {std }}^{3}}$ |
| 3 | 频谱熵 | spectral entropy | $ Y_{\text {spectral_entropy }}=-\sum_{k=1}^{m} P(k) \log _{2} P(k)$ |
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| 序号 | 特征名称 | 缩写 | 权重 | 序号 | 特征名称 | 缩写 | 权重 |
| 1 | J事件环境类别 | env_class_j | 0.092 | 12 | 速度波峰数 | V_peak | 0.040 |
| 2 | 横向加速度标准差 | lataccel_std | 0.065 | 13 | 加速度偏度 | acc_skew | 0.040 |
| 3 | 油门开度标准差 | accpedal_std | 0.065 | 14 | 单位时间挡位转换次数 | unit_change | 0.038 |
| 4 | 加速度第四分之一位数 | acc_0.25 | 0.061 | 15 | 速度平均标准误差 | V_sem | 0.038 |
| 5 | D事件环境类别 | env_class_d | 0.056 | 16 | 挡位转换次数 | actualgear_shift | 0.038 |
| 6 | 油门开度中位数 | accpedal_median | 0.051 | 17 | 速度频谱熵 | V_spectral_entropy | 0.037 |
| 7 | 横向加速度平均值 | lataccel_mean | 0.050 | 18 | 事件级驾驶时变波动 | speed_volatility_event_mean | 0.034 |
| 8 | 速度标准差 | V_std | 0.050 | 19 | B事件速度标准差平均值 | B_mean_speed_std | 0.033 |
| 9 | 速度平均值 | V_mean | 0.048 | 20 | 横向加速度偏度 | lataccel_skew | 0.029 |
| 10 | 纵向加速度中位数 | longaccel_median | 0.046 | 21 | 加速度平均值 | acc_mean | 0.025 |
| 11 | 横向加速度小波能量 | lataccel_wavelet_energy | 0.041 | 22 | 速度平均频率 | V_mean_frequency | 0.023 |
), ArticleFig(id=1189980096887845311, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1189975938487095436, language=CN, label=表4, caption=
D事件的特征重要性排序及权重
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| 序号 | 特征名称 | 缩写 | 权重 | 序号 | 特征名称 | 缩写 | 权重 |
| 1 | J事件环境类别 | env_class_j | 0.092 | 12 | 速度波峰数 | V_peak | 0.040 |
| 2 | 横向加速度标准差 | lataccel_std | 0.065 | 13 | 加速度偏度 | acc_skew | 0.040 |
| 3 | 油门开度标准差 | accpedal_std | 0.065 | 14 | 单位时间挡位转换次数 | unit_change | 0.038 |
| 4 | 加速度第四分之一位数 | acc_0.25 | 0.061 | 15 | 速度平均标准误差 | V_sem | 0.038 |
| 5 | D事件环境类别 | env_class_d | 0.056 | 16 | 挡位转换次数 | actualgear_shift | 0.038 |
| 6 | 油门开度中位数 | accpedal_median | 0.051 | 17 | 速度频谱熵 | V_spectral_entropy | 0.037 |
| 7 | 横向加速度平均值 | lataccel_mean | 0.050 | 18 | 事件级驾驶时变波动 | speed_volatility_event_mean | 0.034 |
| 8 | 速度标准差 | V_std | 0.050 | 19 | B事件速度标准差平均值 | B_mean_speed_std | 0.033 |
| 9 | 速度平均值 | V_mean | 0.048 | 20 | 横向加速度偏度 | lataccel_skew | 0.029 |
| 10 | 纵向加速度中位数 | longaccel_median | 0.046 | 21 | 加速度平均值 | acc_mean | 0.025 |
| 11 | 横向加速度小波能量 | lataccel_wavelet_energy | 0.041 | 22 | 速度平均频率 | V_mean_frequency | 0.023 |
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| 特征 | 环境聚类1 | 环境聚类2 | 环境聚类3 |
| 最小值 | 最大值 | 平均值 | 标准差 | 最小值 | 最大值 | 平均值 | 标准差 | 最小值 | 最大值 | 平均值 | 标准差 |
| lataccel_std/m·s-2 | 0.122 | 0.985 | 0.434 | 0.193 | 0.198 | 1.009 | 0.476 | 0.191 | 0.161 | 1.176 | 0.418 | 0.234 |
| speed_volatility_event_mean/m·s-1 | 4.318 | 16.256 | 8.887 | 2.735 | 1.481 | 7.504 | 4.148 | 1.454 | 0.356 | 5.637 | 1.525 | 1.194 |
| V_sem/m·s-1 | 0.356 | 1.984 | 0.936 | 0.381 | 0.312 | 1.269 | 0.694 | 0.235 | 0.123 | 0.527 | 0.296 | 0.105 |
| acc_std/m·s-1 | 0.288 | 0.852 | 0.551 | 0.132 | 0.279 | 0.718 | 0.468 | 0.106 | 0.087 | 0.785 | 0.349 | 0.159 |
| lataccel_mean/m·s-1 | 0.007 | 0.231 | 0.085 | 0.056 | 0.004 | 0.168 | 0.052 | 0.039 | 0.001 | 0.197 | 0.0458 | 0.044 |
), ArticleFig(id=1189980097026257345, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1189975938487095436, language=CN, label=表5, caption=
对每个环境中驾驶员风格的衡量结果
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| 特征 | 环境聚类1 | 环境聚类2 | 环境聚类3 |
| 最小值 | 最大值 | 平均值 | 标准差 | 最小值 | 最大值 | 平均值 | 标准差 | 最小值 | 最大值 | 平均值 | 标准差 |
| lataccel_std/m·s-2 | 0.122 | 0.985 | 0.434 | 0.193 | 0.198 | 1.009 | 0.476 | 0.191 | 0.161 | 1.176 | 0.418 | 0.234 |
| speed_volatility_event_mean/m·s-1 | 4.318 | 16.256 | 8.887 | 2.735 | 1.481 | 7.504 | 4.148 | 1.454 | 0.356 | 5.637 | 1.525 | 1.194 |
| V_sem/m·s-1 | 0.356 | 1.984 | 0.936 | 0.381 | 0.312 | 1.269 | 0.694 | 0.235 | 0.123 | 0.527 | 0.296 | 0.105 |
| acc_std/m·s-1 | 0.288 | 0.852 | 0.551 | 0.132 | 0.279 | 0.718 | 0.468 | 0.106 | 0.087 | 0.785 | 0.349 | 0.159 |
| lataccel_mean/m·s-1 | 0.007 | 0.231 | 0.085 | 0.056 | 0.004 | 0.168 | 0.052 | 0.039 | 0.001 | 0.197 | 0.0458 | 0.044 |
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| 环境 | 聚类 | lataccel_std /m·s-2 | speed_volatility_event_mean /m·s-1 | V_sem /m·s-1 | acc_std /m·s-2 | lataccel_mean /m·s-2 |
高 速 环 境 | 风格1 | 0.429 | 10.048 | 1.392 | 0.709 | 0.07 |
| 风格2 | 0.322 | 9.324 | 0.576 | 0.402 | 0.087 |
| 风格3 | 0.64 | 9.457 | 0.829 | 0.577 | 0.125 |
| 风格4 | 0.32 | 6.455 | 1.096 | 0.518 | 0.063 |
| 风格5 | 0.958 | 10.294 | 0.708 | 0.633 | 0.094 |
中 速 环 境 | 风格1 | 0.515 | 5.182 | 1.38 | 0.682 | 0.062 |
| 风格2 | 0.374 | 3.697 | 0.653 | 0.415 | 0.046 |
| 风格3 | 0.404 | 2.967 | 0.788 | 0.429 | 0.042 |
| 风格4 | 1.072 | 5.804 | 0.458 | 0.594 | 0.062 |
| 风格5 | 0.614 | 5.81 | 0.618 | 0.533 | 0.071 |
低 速 环 境 | 风格1 | 0.306 | 0.581 | 0.153 | 0.165 | 0.096 |
| 风格2 | 0.469 | 0.355 | 0.121 | 0.089 | 0.117 |
| 风格3 | 0.487 | 2.606 | 0.305 | 0.419 | 0.026 |
| 风格4 | 1.462 | 5.83 | 0.334 | 0.782 | 0.055 |
| 风格5 | 0.354 | 1.199 | 0.34 | 0.352 | 0.043 |
), ArticleFig(id=1189980097164669379, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1189975938487095436, language=CN, label=表6, caption=
各环境中驾驶风格分类特征的平均值
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| 环境 | 聚类 | lataccel_std /m·s-2 | speed_volatility_event_mean /m·s-1 | V_sem /m·s-1 | acc_std /m·s-2 | lataccel_mean /m·s-2 |
高 速 环 境 | 风格1 | 0.429 | 10.048 | 1.392 | 0.709 | 0.07 |
| 风格2 | 0.322 | 9.324 | 0.576 | 0.402 | 0.087 |
| 风格3 | 0.64 | 9.457 | 0.829 | 0.577 | 0.125 |
| 风格4 | 0.32 | 6.455 | 1.096 | 0.518 | 0.063 |
| 风格5 | 0.958 | 10.294 | 0.708 | 0.633 | 0.094 |
中 速 环 境 | 风格1 | 0.515 | 5.182 | 1.38 | 0.682 | 0.062 |
| 风格2 | 0.374 | 3.697 | 0.653 | 0.415 | 0.046 |
| 风格3 | 0.404 | 2.967 | 0.788 | 0.429 | 0.042 |
| 风格4 | 1.072 | 5.804 | 0.458 | 0.594 | 0.062 |
| 风格5 | 0.614 | 5.81 | 0.618 | 0.533 | 0.071 |
低 速 环 境 | 风格1 | 0.306 | 0.581 | 0.153 | 0.165 | 0.096 |
| 风格2 | 0.469 | 0.355 | 0.121 | 0.089 | 0.117 |
| 风格3 | 0.487 | 2.606 | 0.305 | 0.419 | 0.026 |
| 风格4 | 1.462 | 5.83 | 0.334 | 0.782 | 0.055 |
| 风格5 | 0.354 | 1.199 | 0.34 | 0.352 | 0.043 |
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