Article(id=1154021847193608296, tenantId=1146029695717560320, journalId=1146120084050784272, issueId=1154021839199260977, articleNumber=null, orderNo=null, doi=10.19562/j.chinasae.qcgc.2024.11.015, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1717257600000, receivedDateStr=2024-06-02, revisedDate=1719763200000, revisedDateStr=2024-07-01, acceptedDate=null, acceptedDateStr=null, onlineDate=1753069849059, onlineDateStr=2025-07-21, pubDate=1732464000000, pubDateStr=2024-11-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1753069849059, onlineIssueDateStr=2025-07-21, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1753069849059, creator=13701087609, updateTime=1753069849059, updator=13701087609, issue=Issue{id=1154021839199260977, tenantId=1146029695717560320, journalId=1146120084050784272, year='2024', volume='46', issue='11', pageStart='1937', pageEnd='2141', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=0, articleOrder=1, issueType=-1, specialIssue=null, createTime=1753069847153, creator=13701087609, updateTime=1753074308668, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1154040552191418639, tenantId=1146029695717560320, journalId=1146120084050784272, issueId=1154021839199260977, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1154040552191418640, tenantId=1146029695717560320, journalId=1146120084050784272, issueId=1154021839199260977, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=2091, endPage=2099, ext={EN=ArticleExt(id=1154021847810170986, articleId=1154021847193608296, tenantId=1146029695717560320, journalId=1146120084050784272, language=EN, title=Optimization of Vibration Isolation Rate of Pure Electric Vehicle Mounting System Based on NSGA-II, columnId=1149809889280750125, journalTitle=Automotive Engineering, columnName=Selected Papers, runingTitle=null, highlight=null, articleAbstract=
The vibration characteristics of pure electric vehicles differ significantly from traditional internal combustion engine vehicles. In this paper,a research method suitable for optimizing the vibration isolation rate of mounting systems is proposed to address the insufficient vibration isolation rate of pure electric vehicle suspension. The vibration isolation rate in all directions of the engine mounting system and main factors affecting the vibration isolation rate of the engine suspension are analyzed. The vibration isolation rate of the rear suspension is defined as the optimization object,and the method of optimizing the jog stiffness of the passive side bracket installation of the suspension is proposed to improve the vibration isolation rate. Taking the optimal isolation rate and minimum mass ratio change as the optimization objectives,and using the NSGA-II multi-objective optimization algorithm,the target value of the jog stiffness of the passive side bracket installation is optimized,and the passive side bracket structure is adjusted according to the optimization results. The test results show that the optimized rear suspension Y-direction vibration isolation rate increase from 5.61 to 18.13 dB,and the driver's right side-ear noise decreases by 9.76 and 5.03 dB(A) in the 24th and 48th orders,indicating a significant improvement in driving comfort.
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纯电动汽车的振动特性与传统内燃机汽车存在较大差异,本文针对纯电动汽车悬置隔振率不足的问题,提出了一种适用于悬置系统隔振率优化的研究方法。分析悬置系统各方向隔振率以及影响悬置隔振率的主要因素,确定了后悬置隔振率作为优化对象,提出通过优化悬置被动侧支架安装点动刚度来提升隔振率。采用第二代非劣排序遗传多目标寻优算法,以隔振率最优、质量比变化最小为寻优目标,对支架安装点动刚度目标值进行寻优,根据寻优结果对被动侧支架结构进行调整。试验结果表明,优化后的后悬置Y向隔振率从5.61提升至18.13 dB,驾驶员右耳旁噪声在24、48阶次下降9.76和5.03 dB(A),驾驶舒适性有明显改善。
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寻优结果Pareto解集, figureFileSmall=YenER8HXYGYyIA5JYjQhYg==, figureFileBig=NLsZ1HKK0gVOxFpUA6ElAA==, tableContent=null), ArticleFig(id=1170312561669972271, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1154021847193608296, language=EN, label=null, caption=null, figureFileSmall=3AjrXjCYkg09EJs+0F/FBg==, figureFileBig=wvUN2d/yOMrhSm4idA+LBQ==, tableContent=null), ArticleFig(id=1170312561841938736, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1154021847193608296, language=CN, label=图6, caption=
加强后悬置被动侧安装支架的仿真模型, figureFileSmall=3AjrXjCYkg09EJs+0F/FBg==, figureFileBig=wvUN2d/yOMrhSm4idA+LBQ==, tableContent=null), ArticleFig(id=1170312561930019121, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1154021847193608296, language=EN, label=null, caption=null, figureFileSmall=DWxyTxrxJ54ULROKtMi7Rg==, figureFileBig=cev9qi0LIqiZrPNhg+3Znw==, tableContent=null), ArticleFig(id=1170312562043265330, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1154021847193608296, language=CN, label=图7, caption=
优化前后IPI曲线, figureFileSmall=DWxyTxrxJ54ULROKtMi7Rg==, figureFileBig=cev9qi0LIqiZrPNhg+3Znw==, tableContent=null), ArticleFig(id=1170312562135540019, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1154021847193608296, language=EN, label=null, caption=null, figureFileSmall=hwj/M76IXQDj0DAF1Qb96w==, figureFileBig=YNTvsc6drKfXmCoz+4jLqA==, tableContent=null), ArticleFig(id=1170312562248786228, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1154021847193608296, language=CN, label=图8, caption=
优化前后Y向隔振率对比, figureFileSmall=hwj/M76IXQDj0DAF1Qb96w==, figureFileBig=YNTvsc6drKfXmCoz+4jLqA==, tableContent=null), ArticleFig(id=1170312562429141301, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1154021847193608296, language=EN, label=null, caption=null, figureFileSmall=6LjwxQhtQLRiIpZ2wXYovQ==, figureFileBig=y6gTE1o2mrBTl/JoT8XlhA==, tableContent=null), ArticleFig(id=1170312562550776118, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1154021847193608296, language=CN, label=图9, caption=
后悬置主被动侧加速度传感器, figureFileSmall=6LjwxQhtQLRiIpZ2wXYovQ==, figureFileBig=y6gTE1o2mrBTl/JoT8XlhA==, tableContent=null), ArticleFig(id=1170312562622079287, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1154021847193608296, language=EN, label=null, caption=null, figureFileSmall=RH27tAL3tpiJLDqQdhSKXw==, figureFileBig=5T9NSCl9d88QaXFFnASGdw==, tableContent=null), ArticleFig(id=1170312562705965368, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1154021847193608296, language=CN, label=图10, caption=
驾驶员耳旁噪声测试, figureFileSmall=RH27tAL3tpiJLDqQdhSKXw==, figureFileBig=5T9NSCl9d88QaXFFnASGdw==, tableContent=null), ArticleFig(id=1170312562768879929, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1154021847193608296, language=EN, label=null, caption=null, figureFileSmall=vsC25FWnirdyRByYxloUGQ==, figureFileBig=ax26fyMvaxL7n10u2eXREg==, tableContent=null), ArticleFig(id=1170312562861154618, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1154021847193608296, language=CN, label=图11, caption=
耳旁噪声声压级测试结果, figureFileSmall=vsC25FWnirdyRByYxloUGQ==, figureFileBig=ax26fyMvaxL7n10u2eXREg==, tableContent=null), ArticleFig(id=1170312562928263483, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1154021847193608296, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 数值 |
| 质量/kg | 87 |
| 质心坐标/mm | 2 877.18,-2.426,37.963 |
| 软垫弹性中心 坐标/mm | 左 | 2 728.68,-330,63.857 |
| 右 | 2 728.68,330,63.857 |
| 后 | 3 171,-30.926,-95 |
| 极/槽数 | 4极/48槽 |
| 转动惯量/(kg·m2) | Ixx | Iyy | Izz | Ixy | Iyz | Izx |
| 2.04 | 1.32 | 2.41 | 0.2 | -0.3 | -0.05 |
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电机基本参数
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| 参数 | 数值 |
| 质量/kg | 87 |
| 质心坐标/mm | 2 877.18,-2.426,37.963 |
| 软垫弹性中心 坐标/mm | 左 | 2 728.68,-330,63.857 |
| 右 | 2 728.68,330,63.857 |
| 后 | 3 171,-30.926,-95 |
| 极/槽数 | 4极/48槽 |
| 转动惯量/(kg·m2) | Ixx | Iyy | Izz | Ixy | Iyz | Izx |
| 2.04 | 1.32 | 2.41 | 0.2 | -0.3 | -0.05 |
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| 软垫坐标 | Ui | Vi | Wi |
| 整车坐标 | X | Y | Z | X | Y | Z | X | Y | Z |
| 左悬置 | 0 | 90 | 90 | 90 | 0 | 90 | 90 | 90 | 0 |
| 右悬置 | 0 | 90 | 90 | 90 | 0 | 90 | 90 | 90 | 0 |
| 后悬置 | 0 | 90 | 90 | 90 | 0 | 90 | 90 | 90 | 0 |
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安装角度相关参数 (°)
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| 软垫坐标 | Ui | Vi | Wi |
| 整车坐标 | X | Y | Z | X | Y | Z | X | Y | Z |
| 左悬置 | 0 | 90 | 90 | 90 | 0 | 90 | 90 | 90 | 0 |
| 右悬置 | 0 | 90 | 90 | 90 | 0 | 90 | 90 | 90 | 0 |
| 后悬置 | 0 | 90 | 90 | 90 | 0 | 90 | 90 | 90 | 0 |
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| 项目 | X | Y | Z | Rxx | Ryy | Rzz |
| 刚体模态/Hz | 15.00 | 11.44 | 28.25 | 55.84 | 49.03 | 32.23 |
| X | 99.73 | 0.02 | 0.02 | 0.00 | 0.00 | 0.23 |
| Y | 0.02 | 99.84 | 0.00 | 0.01 | 0.00 | 0.12 |
| Z | 0.00 | 0.00 | 93.69 | 0.91 | 2.79 | 2.60 |
| Rxx | 0.00 | 0.01 | 1.61 | 95.92 | 2.45 | 0.00 |
| Ryy | 0.03 | 0.00 | 3.07 | 3.23 | 90.98 | 2.69 |
| Rzz | 0.22 | 0.12 | 1.61 | -0.07 | 3.77 | 94.36 |
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刚体模态和解耦率 (%)
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| 项目 | X | Y | Z | Rxx | Ryy | Rzz |
| 刚体模态/Hz | 15.00 | 11.44 | 28.25 | 55.84 | 49.03 | 32.23 |
| X | 99.73 | 0.02 | 0.02 | 0.00 | 0.00 | 0.23 |
| Y | 0.02 | 99.84 | 0.00 | 0.01 | 0.00 | 0.12 |
| Z | 0.00 | 0.00 | 93.69 | 0.91 | 2.79 | 2.60 |
| Rxx | 0.00 | 0.01 | 1.61 | 95.92 | 2.45 | 0.00 |
| Ryy | 0.03 | 0.00 | 3.07 | 3.23 | 90.98 | 2.69 |
| Rzz | 0.22 | 0.12 | 1.61 | -0.07 | 3.77 | 94.36 |
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| 序号 | 隔振率 差值/dB | 质量比差值 | 被动侧动刚度/(N·mm-1) | 隔振率/dB |
| 1 | 0.01 | 0.46 | 12 192 | 18.99 |
| 2 | 0.03 | 0.39 | 12 027 | 18.87 |
| 3 | 0.03 | 0.41 | 12 166 | 18.97 |
| 4 | 0.41 | 0.32 | 11 515 | 18.49 |
| 5 | 2.25 | 0.15 | 9 418.75 | 16.75 |
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后悬置Y向被动侧动刚度部分最优解集
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| 序号 | 隔振率 差值/dB | 质量比差值 | 被动侧动刚度/(N·mm-1) | 隔振率/dB |
| 1 | 0.01 | 0.46 | 12 192 | 18.99 |
| 2 | 0.03 | 0.39 | 12 027 | 18.87 |
| 3 | 0.03 | 0.41 | 12 166 | 18.97 |
| 4 | 0.41 | 0.32 | 11 515 | 18.49 |
| 5 | 2.25 | 0.15 | 9 418.75 | 16.75 |
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| 项目 | X | Y | Z | Rxx | Ryy | Rzz |
| 刚体模态/Hz | 15.94 | 14.77 | 28.01 | 57.68 | 50.11 | 33.04 |
| X | 99.21 | 0.00 | 0.65 | 0.02 | 0.06 | 0.07 |
| Y | 0.00 | 99.90 | 0.00 | 0.03 | 0.00 | 0.13 |
| Z | 0.68 | 0.00 | 98.44 | 0.59 | 0.29 | 0.00 |
| Rxx | 0.00 | 0.03 | 0.35 | 93.75 | 5.82 | 0.05 |
| Ryy | 0.04 | 0.00 | 0.57 | 5.55 | 93.84 | 0.00 |
| Rzz | 0.07 | 0.08 | 0.00 | 0.06 | -0.01 | 99.81 |
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优化后的刚体模态和解耦率 (%)
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| 项目 | X | Y | Z | Rxx | Ryy | Rzz |
| 刚体模态/Hz | 15.94 | 14.77 | 28.01 | 57.68 | 50.11 | 33.04 |
| X | 99.21 | 0.00 | 0.65 | 0.02 | 0.06 | 0.07 |
| Y | 0.00 | 99.90 | 0.00 | 0.03 | 0.00 | 0.13 |
| Z | 0.68 | 0.00 | 98.44 | 0.59 | 0.29 | 0.00 |
| Rxx | 0.00 | 0.03 | 0.35 | 93.75 | 5.82 | 0.05 |
| Ryy | 0.04 | 0.00 | 0.57 | 5.55 | 93.84 | 0.00 |
| Rzz | 0.07 | 0.08 | 0.00 | 0.06 | -0.01 | 99.81 |
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| 方向 | 优化前加速度 | 优化后加速度 |
| 主动侧 | 被动侧 | 主动侧 | 被动侧 |
| X | 2.12 | 0.29 | 2.12 | 0.29 |
| Y | 2.50 | 1.34 | 2.50 | 0.31 |
| Z | 2.00 | 0.16 | 2.00 | 0.16 |
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后悬置优化前后加速度信号 (g)
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| 方向 | 优化前加速度 | 优化后加速度 |
| 主动侧 | 被动侧 | 主动侧 | 被动侧 |
| X | 2.12 | 0.29 | 2.12 | 0.29 |
| Y | 2.50 | 1.34 | 2.50 | 0.31 |
| Z | 2.00 | 0.16 | 2.00 | 0.16 |
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| 方向 | 优化前隔振率 | 优化后隔振率 |
| X | 17.28 | 17.28 |
| Y | 5.41 | 18.13 |
| Z | 21.92 | 21.92 |
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后悬置优化前后不同方向隔振率 (dB)
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| 方向 | 优化前隔振率 | 优化后隔振率 |
| X | 17.28 | 17.28 |
| Y | 5.41 | 18.13 |
| Z | 21.92 | 21.92 |
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