Article(id=1149418804041646652, tenantId=1146029695717560320, journalId=1146120084050784272, issueId=1149418798794572319, articleNumber=null, orderNo=null, doi=10.19562/j.chinasae.qcgc.2025.05.003, pmid=null, cstr=null, oa=null, hot=1, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1729008000000, receivedDateStr=2024-10-16, revisedDate=1733760000000, revisedDateStr=2024-12-10, acceptedDate=null, acceptedDateStr=null, onlineDate=1751972398052, onlineDateStr=2025-07-08, pubDate=1748102400000, pubDateStr=2025-05-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1751972398052, onlineIssueDateStr=2025-07-08, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1751972398052, creator=13701087609, updateTime=1772097830349, updator=13701087609, issue=Issue{id=1149418798794572319, tenantId=1146029695717560320, journalId=1146120084050784272, year='2025', volume='47', issue='5', pageStart='1', pageEnd='1006', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1751972396792, creator=13701087609, updateTime=1753780688390, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1157003323518837255, tenantId=1146029695717560320, journalId=1146120084050784272, issueId=1149418798794572319, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1157003323518837256, tenantId=1146029695717560320, journalId=1146120084050784272, issueId=1149418798794572319, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=820, endPage=828, ext={EN=ArticleExt(id=1149418804486242888, articleId=1149418804041646652, tenantId=1146029695717560320, journalId=1146120084050784272, language=EN, title=Spatio-Temporal Unified Planning Method for Intelligent Vehicles on Structured Road, columnId=1149805645261664296, journalTitle=Automotive Engineering, columnName=Papers, runingTitle=null, highlight=
For the problem that the spatio-temporal separation trajectory planning method used in autonomous vehicles is prone to insufficient vehicle flexibility,and even cannot generate feasible trajectories under complex working conditions,while the existing spatio-temporal unified trajectory planning method is difficult to meet the requirements of structured road application,a spatio-temporal unified planning method based on dynamic programming and numerical optimization algorithm is proposed. Firstly,the spatio-temporal unified coarse trajectory is generated by dynamic programming algorithm in Frenet coordinate system. In the process,deterministic sampling method is used to expand the child nodes. Then,taking the coarse trajectory as reference,the feasible spatio-temporal corridor is constructed in Cartesian coordinate system,and the NMPC optimization model is established to generate the final trajectory. Finally,the algorithm is verified by simulation. The results show that the proposed algorism has good adaptability to structured road,and can better balance the requirements of traffic efficiency,trajectory comfort and time consumption than other spatio-temporal unified algorithms.
, articleAbstract=
For the problem that the spatiotemporal separation trajectory planning method used in autonomous vehicles is prone to insufficient vehicle flexibility, and even cannot generate feasible trajectories under complex working conditions, while the existing spatiotemporal unified trajectory planning method is difficult to meet the requirements of structured road application, a spatiotemporal unified planning method based on dynamic programming and numerical optimization algorithm is proposed. Firstly, the spatiotemporal unified coarse trajectory is generated by dynamic programming algorithm in Frenet coordinate system. In the process, deterministic sampling method is used to expand the child nodes. Then, taking the coarse trajectory as reference, the feasible spatiotemporal corridor is constructed in Cartesian coordinate system, and the NMPC optimization model is established to generate the final trajectory. Finally, the algorithm is verified by simulation. The results show that the proposed algorism has good adaptability to structured road, and can better balance the requirements of traffic efficiency, trajectory comfort and time consumption than other spatiotemporal unified algorithms.
, correspAuthors=Jie Hu, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Jie Hu, Jiachen Zheng, Silong Zhou, Wenlong Zhao, Zhiling Zhang, Maojia Yao), CN=ArticleExt(id=1149418817626997026, articleId=1149418804041646652, tenantId=1146029695717560320, journalId=1146120084050784272, language=CN, title=结构化道路下智能车时空联合轨迹规划方法
*, columnId=1149805645391687721, journalTitle=汽车工程, columnName=研究论文, runingTitle=null, highlight=
针对自动驾驶汽车所应用的时空分离轨迹规划方法易导致车辆灵活性不足,甚至无法在复杂工况下规划出可行轨迹,而现有时空联合轨迹规划方法难以满足结构化道路应用要求的问题,本文提出了一种基于动态规划与数值优化算法的时空联合规划方法。首先,在Frenet坐标系下使用动态规划算法生成时空耦合粗轨迹,过程中采用确定性采样法进行子节点拓展。然后,以粗轨迹为参考在笛卡尔坐标系下构建可行驶时空走廊,建立NMPC优化模型求解最终轨迹。最后,通过仿真验证算法有效性,结果表明,所提出的方法对结构化道路的适应性良好,相较于其他时空联合规划算法,能够更好地平衡通行效率、轨迹舒适性、算法实时性的要求。
, articleAbstract=
针对自动驾驶汽车所应用的时空分离轨迹规划方法易导致车辆灵活性不足,甚至无法在复杂工况下规划出可行轨迹,而现有时空联合轨迹规划方法难以满足结构化道路应用要求的问题,本文提出了一种基于动态规划与数值优化算法的时空联合规划方法。首先,在Frenet坐标系下使用动态规划算法生成时空耦合粗轨迹,过程中采用确定性采样法进行子节点拓展。然后,以粗轨迹为参考在笛卡尔坐标系下构建可行驶时空走廊,建立NMPC优化模型求解最终轨迹。最后,通过仿真验证算法有效性,结果表明,所提出的方法对结构化道路的适应性良好,相较于其他时空联合轨迹规划算法,能够更好地平衡通行效率、轨迹舒适性、算法实时性的要求。
, correspAuthors=胡杰, authorNote=null, correspAuthorsNote=
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, authorsList=胡杰, 郑嘉辰, 周思龙, 赵文龙, 张志凌, 姚茂嘉), CHT=ArticleExt(id=1233830985352139775, articleId=1149418804041646652, tenantId=1146029695717560320, journalId=1146120084050784272, language=CHT, title=null, columnId=null, journalTitle=汽车工程, columnName=null, runingTitle=null, highlight=null, articleAbstract=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=null)}, authors=[Author(id=1170297173498409705, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=auto_hj@163.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1170297173594878701, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, authorId=1170297173498409705, language=EN, stringName=Jie Hu, firstName=Jie, middleName=null, lastName=Hu, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, 3, address=
1 Wuhan University of Technology,Hubei Key Laboratory of Modern Auto Parts Technology,Wuhan 430070
2 Wuhan University of Technology,Auto Parts Technology Hubei Collaborative Innovation Center,Wuhan 430070
3 Hubei Technology Research Center of New Energy and Intelligent Connected Vehicle Engineering,Wuhan 430070, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1170297173653598958, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, authorId=1170297173498409705, language=CN, stringName=胡杰, firstName=杰, middleName=null, lastName=胡, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, 3, address=
1 武汉理工大学,现代汽车零部件技术湖北省重点实验室,武汉 430070
2 武汉理工大学,汽车零部件技术湖北省协同创新中心,武汉 430070
3 新能源与智能网联车湖北工程技术研究中心,武汉 430070, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1170297173242557150, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, xref=1, ext=[AuthorCompanyExt(id=1170297173250945759, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, companyId=1170297173242557150, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1 武汉理工大学,现代汽车零部件技术湖北省重点实验室,武汉 430070)]), AuthorCompany(id=1170297173309666017, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, xref=2, ext=[AuthorCompanyExt(id=1170297173318054626, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, companyId=1170297173309666017, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 Wuhan University of Technology,Auto Parts Technology Hubei Collaborative Innovation Center,Wuhan 430070), AuthorCompanyExt(id=1170297173326443235, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, companyId=1170297173309666017, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 武汉理工大学,汽车零部件技术湖北省协同创新中心,武汉 430070)]), AuthorCompany(id=1170297173397746405, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, xref=3, ext=[AuthorCompanyExt(id=1170297173401940710, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, companyId=1170297173397746405, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 Hubei Technology Research Center of New Energy and Intelligent Connected Vehicle Engineering,Wuhan 430070), AuthorCompanyExt(id=1170297173406135015, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, companyId=1170297173397746405, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 新能源与智能网联车湖北工程技术研究中心,武汉 430070)])]), Author(id=1170297173716513520, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, orderNo=1, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1170297173787816692, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, authorId=1170297173716513520, language=EN, stringName=Jiachen Zheng, firstName=Jiachen, middleName=null, lastName=Zheng, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, 3, address=
1 Wuhan University of Technology,Hubei Key Laboratory of Modern Auto Parts Technology,Wuhan 430070
2 Wuhan University of Technology,Auto Parts Technology Hubei Collaborative Innovation Center,Wuhan 430070
3 Hubei Technology Research Center of New Energy and Intelligent Connected Vehicle Engineering,Wuhan 430070, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1170297173850731253, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, authorId=1170297173716513520, language=CN, stringName=郑嘉辰, firstName=嘉辰, middleName=null, lastName=郑, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, 3, address=
1 武汉理工大学,现代汽车零部件技术湖北省重点实验室,武汉 430070
2 武汉理工大学,汽车零部件技术湖北省协同创新中心,武汉 430070
3 新能源与智能网联车湖北工程技术研究中心,武汉 430070, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1170297173242557150, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, xref=1, ext=[AuthorCompanyExt(id=1170297173250945759, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, companyId=1170297173242557150, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 Wuhan University of Technology,Hubei Key Laboratory of Modern Auto Parts Technology,Wuhan 430070), AuthorCompanyExt(id=1170297173255140064, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, companyId=1170297173242557150, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 武汉理工大学,现代汽车零部件技术湖北省重点实验室,武汉 430070)]), AuthorCompany(id=1170297173309666017, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, xref=2, ext=[AuthorCompanyExt(id=1170297173318054626, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, companyId=1170297173309666017, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 Wuhan University of Technology,Auto Parts Technology Hubei Collaborative Innovation Center,Wuhan 430070), AuthorCompanyExt(id=1170297173326443235, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, companyId=1170297173309666017, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 武汉理工大学,汽车零部件技术湖北省协同创新中心,武汉 430070)]), AuthorCompany(id=1170297173397746405, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, xref=3, ext=[AuthorCompanyExt(id=1170297173401940710, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, companyId=1170297173397746405, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 Hubei Technology Research Center of New Energy and Intelligent Connected Vehicle Engineering,Wuhan 430070), AuthorCompanyExt(id=1170297173406135015, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, companyId=1170297173397746405, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 新能源与智能网联车湖北工程技术研究中心,武汉 430070)])]), Author(id=1170297173909451511, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1170297174010114811, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, authorId=1170297173909451511, language=EN, stringName=Silong Zhou, firstName=Silong, middleName=null, lastName=Zhou, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, 3, address=
1 Wuhan University of Technology,Hubei Key Laboratory of Modern Auto Parts Technology,Wuhan 430070
2 Wuhan University of Technology,Auto Parts Technology Hubei Collaborative Innovation Center,Wuhan 430070
3 Hubei Technology Research Center of New Energy and Intelligent Connected Vehicle Engineering,Wuhan 430070, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1170297174089806588, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, authorId=1170297173909451511, language=CN, stringName=周思龙, firstName=思龙, middleName=null, lastName=周, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, 3, address=
1 武汉理工大学,现代汽车零部件技术湖北省重点实验室,武汉 430070
2 武汉理工大学,汽车零部件技术湖北省协同创新中心,武汉 430070
3 新能源与智能网联车湖北工程技术研究中心,武汉 430070, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1170297173242557150, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, xref=1, ext=[AuthorCompanyExt(id=1170297173250945759, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, companyId=1170297173242557150, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 Wuhan University of Technology,Hubei Key Laboratory of Modern Auto Parts Technology,Wuhan 430070), AuthorCompanyExt(id=1170297173255140064, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, companyId=1170297173242557150, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 武汉理工大学,现代汽车零部件技术湖北省重点实验室,武汉 430070)]), AuthorCompany(id=1170297173309666017, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, xref=2, ext=[AuthorCompanyExt(id=1170297173318054626, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, companyId=1170297173309666017, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 Wuhan University of Technology,Auto Parts Technology Hubei Collaborative Innovation Center,Wuhan 430070), AuthorCompanyExt(id=1170297173326443235, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, companyId=1170297173309666017, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 武汉理工大学,汽车零部件技术湖北省协同创新中心,武汉 430070)]), AuthorCompany(id=1170297173397746405, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, xref=3, ext=[AuthorCompanyExt(id=1170297173401940710, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, companyId=1170297173397746405, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 Hubei Technology Research Center of New Energy and Intelligent Connected Vehicle Engineering,Wuhan 430070), AuthorCompanyExt(id=1170297173406135015, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, companyId=1170297173397746405, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 新能源与智能网联车湖北工程技术研究中心,武汉 430070)])]), Author(id=1170297174165304062, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1170297174253384450, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, authorId=1170297174165304062, language=EN, stringName=Wenlong Zhao, firstName=Wenlong, middleName=null, lastName=Zhao, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, 3, address=
1 Wuhan University of Technology,Hubei Key Laboratory of Modern Auto Parts Technology,Wuhan 430070
2 Wuhan University of Technology,Auto Parts Technology Hubei Collaborative Innovation Center,Wuhan 430070
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Baidu apollo em motion planner[J]. arxiv preprint arXiv:2018., articleTitle=null, refAbstract=null), Reference(id=1170297179773088629, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[2], rfOrder=1, authorNames=null, journalName=null, refType=null, unstructuredReference=LIM W,LEE S,SUNWOO M,et al. Hierarchical trajectory planning of an autonomous car based on the integration of a sampling and an optimization method[J]. 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Motion planning for autonomous driving with a conformal spatiotemporal lattice[C]. 2011 IEEE International Conference on Robotics and Automation. IEEE,2011: 4889-4895., articleTitle=null, refAbstract=null)], funds=[Fund(id=1170297179542401901, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, awardId=JD2023BAA017, language=CN, fundingSource=*湖北省重大攻关项目(JD2023BAA017), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1170297173242557150, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, xref=1, ext=[AuthorCompanyExt(id=1170297173250945759, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, companyId=1170297173242557150, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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| 算法1 时空域动态规划算法流程 |
| 输入:车辆状态信息,道路信息,时空节点网格 |
| 输出:时空耦合粗轨迹 |
| 1. Initialize the start node of 2. For each 3. For each 4. take as parent node; 5. execute child node extension from parent node 6. calculate the cost of child node and filter the node with lowest cost in each grid 7. update the connection status of nodes in 8. End For 9. select the node with lowest cost in latest layer as target node 10. trackback from the target node to the planning start node and construct the coarse trajectory 11. End For 12. return the coarse trajectory |
), ArticleFig(id=1170297178489631559, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, language=CN, label=表1, caption=
时空域动态规划伪代码
, figureFileSmall=null, figureFileBig=null, tableContent=
| 算法1 时空域动态规划算法流程 |
| 输入:车辆状态信息,道路信息,时空节点网格 |
| 输出:时空耦合粗轨迹 |
| 1. Initialize the start node of 2. For each 3. For each 4. take as parent node; 5. execute child node extension from parent node 6. calculate the cost of child node and filter the node with lowest cost in each grid 7. update the connection status of nodes in 8. End For 9. select the node with lowest cost in latest layer as target node 10. trackback from the target node to the planning start node and construct the coarse trajectory 11. End For 12. return the coarse trajectory |
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| 算法2 时空节点拓展算法流程 |
| 输入:车辆配置参数,道路信息,障碍物信息,父节点 ,时空节点网格 |
| 输出:更新后的时空节点网格 |
| 13. For each 14. calculate the longitudinal quadratic polynomial; 15. update longitudinal position ; 16. calculate of the sample node through the 17. generate 18. For each 19. calculate the lateral cubic polynomial; 20. update lateral position; 21. combine the longitudinal and lateral polynomial to form the trajectory from to sample node ; 22. If is in collision or kinematic inaccessible 23. continue; 24. End 25. calculate the total cost of node as ; 26. calculate the of in the ; 27. If < the total cost at ; 28. replace the node at with ; 29. End 30. End For 31. End For 32. return the updated |
), ArticleFig(id=1170297178661598028, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1149418804041646652, language=CN, label=表 2, caption=
时空节点拓展伪代码
, figureFileSmall=null, figureFileBig=null, tableContent=
| 算法2 时空节点拓展算法流程 |
| 输入:车辆配置参数,道路信息,障碍物信息,父节点 ,时空节点网格 |
| 输出:更新后的时空节点网格 |
| 13. For each 14. calculate the longitudinal quadratic polynomial; 15. update longitudinal position ; 16. calculate of the sample node through the 17. generate 18. For each 19. calculate the lateral cubic polynomial; 20. update lateral position; 21. combine the longitudinal and lateral polynomial to form the trajectory from to sample node ; 22. If is in collision or kinematic inaccessible 23. continue; 24. End 25. calculate the total cost of node as ; 26. calculate the of in the ; 27. If < the total cost at ; 28. replace the node at with ; 29. End 30. End For 31. End For 32. return the updated |
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| 参数 | 数值 |
| 车长/m | 4.6 |
| 车宽/m | 1.8 |
| 轴距/m | 2.7 |
| 最大前轮转角/( ) | 40 |
| 最高车速/(m·s-1) | 15 |
| 期望车速/(m·s-1) | 14 |
| 加速度范围/(m·s-2) | [-4,4] |
| 离散加速度候选集 | |
| 规划时域 /s | 7 |
| 车道宽度/m | 3.5 |
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实验相关参数
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| 参数 | 数值 |
| 车长/m | 4.6 |
| 车宽/m | 1.8 |
| 轴距/m | 2.7 |
| 最大前轮转角/( ) | 40 |
| 最高车速/(m·s-1) | 15 |
| 期望车速/(m·s-1) | 14 |
| 加速度范围/(m·s-2) | [-4,4] |
| 离散加速度候选集 | |
| 规划时域 /s | 7 |
| 车道宽度/m | 3.5 |
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| 算法 | 纵向通行 距离/m | 纵向加速度峰值/ 平均值/(m·s-2) | 横向加速度峰值/ 平均值/(m·s-2) |
| 本文算法粗轨迹 | 96.4 | 1.00/0.57 | 2.95/1.25 |
| 本文算法优化后 | 96.4 | 0.84/0.45 | 2.13/1.11 |
| Lattice算法 | 84.0 | 0.00/0.00 | 1.17/0.45 |
| Hybrid A*算法 | 94.3 | 0.94/0.51 | 2.77/1.56 |
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场景1算法性能对比
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| 算法 | 纵向通行 距离/m | 纵向加速度峰值/ 平均值/(m·s-2) | 横向加速度峰值/ 平均值/(m·s-2) |
| 本文算法粗轨迹 | 96.4 | 1.00/0.57 | 2.95/1.25 |
| 本文算法优化后 | 96.4 | 0.84/0.45 | 2.13/1.11 |
| Lattice算法 | 84.0 | 0.00/0.00 | 1.17/0.45 |
| Hybrid A*算法 | 94.3 | 0.94/0.51 | 2.77/1.56 |
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| 算法 | 纵向通行 距离/m | 纵向加速度峰值/ 平均值/(m·s-2) | 横向加速度峰值/ 平均值/(m·s-2) |
| 本文算法粗轨迹 | 96.4 | 2.00/0.57 | 3.93/1.96 |
| 本文算法优化后 | 96.4 | 1.79/0.54 | 2.87/1.81 |
| Lattice算法 | 84 | 0.50/0.26 | 1.60/1.30 |
| Hybrid A*算法 | 92.1 | 1.47/0.58 | 3.89/1.88 |
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场景2算法性能对比
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| 算法 | 纵向通行 距离/m | 纵向加速度峰值/ 平均值/(m·s-2) | 横向加速度峰值/ 平均值/(m·s-2) |
| 本文算法粗轨迹 | 96.4 | 2.00/0.57 | 3.93/1.96 |
| 本文算法优化后 | 96.4 | 1.79/0.54 | 2.87/1.81 |
| Lattice算法 | 84 | 0.50/0.26 | 1.60/1.30 |
| Hybrid A*算法 | 92.1 | 1.47/0.58 | 3.89/1.88 |
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| 场景 | 平均耗时/ms |
| 本文算法 | Hybrid A*[6] | Lattice[21] |
| 场景1 | 90(18+72) | 76 | 34 |
| 场景2 | 96(21+75) | 89 | 39 |
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算法耗时对比
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| 场景 | 平均耗时/ms |
| 本文算法 | Hybrid A*[6] | Lattice[21] |
| 场景1 | 90(18+72) | 76 | 34 |
| 场景2 | 96(21+75) | 89 | 39 |
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