Article(id=1242120115571983180, tenantId=1146029695717560320, journalId=1146031591421210625, issueId=1242120090297107178, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1267632000000, receivedDateStr=2010-03-04, revisedDate=1274025600000, revisedDateStr=2010-05-17, acceptedDate=null, acceptedDateStr=null, onlineDate=1276358400000, onlineDateStr=2010-06-13, pubDate=1276358400000, pubDateStr=2010-06-13, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1276358400000, onlineIssueDateStr=2010-06-13, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774074113025, creator=sys-migrate, updateTime=1774074113025, updator=sys-migrate, issue=Issue{id=1242120090297107178, tenantId=1146029695717560320, journalId=1146031591421210625, year='2010', volume='28', issue='11', pageStart='3', pageEnd='139', issueExtLink='null', onlineDate='null', pubDate='1276358400000', pubDateStr='2010-06-13', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=3, issueType=-1, specialIssue=null, createTime=1774074107000, creator='sys-migrate', updateTime=1774074107000, updator='sys-migrate', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=94, endPage=97, ext={EN=ArticleExt(id=1242120118700938168, articleId=1242120115571983180, tenantId=1146029695717560320, journalId=1146031591421210625, language=EN, title=Dynamics Analysis of the Linkage Mechanism for Beam Pumping Unit Based on Multi-parameter Friction Model, columnId=1242116080374710456, journalTitle=Science & Technology Review, columnName=Articles, runingTitle=null, highlight=null, articleAbstract=In recent years, the friction model theory and its application have attracted a considerable attention. In addition to the traditional Coulomb friction model, other multi-parameter friction models such as Coulomb+hyperbolic tangent friction model and exponent hyperbolic tangent friction model are also applied to the dynamic analysis of mechanisms. This paper discusses the physical meaning and the selection of parameters of multi-parameter friction models. The relationship between Striebeck velocity and coefficient k in the exponent hyperbolic tangent friction model is analyzed. Based on the exponent hyperbolic tangent friction model, the nonlinear dynamic equation of a linkage mechanism for beam pumping unit is established and is then solved by using the numerical iterative method. The curve of the driving torque acting on the crank against the mechanical efficiency of this system is obtained. The theoretical analysis result agrees with the actual phenomenon. It is shown that the exponent hyperbolic tangent friction model is more precise than the Coulomb friction model for describing the energy dissipation in the dynamic simulation of the mechanisms., authors=null, authorsList=null, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=MdN+Q4YMHb9D7GaEOmixvA==, pdfFileSize=817931, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1242120117941769138, articleId=1242120115571983180, tenantId=1146029695717560320, journalId=1146031591421210625, language=CN, title=基于多参数摩擦模型的游梁式抽油机机构动力学分析, columnId=1146540929516700224, journalTitle=科技导报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=论述了多参数摩擦模型中各参数的物理意义及其取值；分析了指数+双曲正切摩擦模型中，Striebeck速度与双曲正切函数中参数k的关系；建立了基于该模型的游梁式抽油机非线性动力学分析模型，并采用数值迭代法求解，获得了驱动力矩和机械效率的变化规律。理论计算与实际现象相符，说明在机构动力学仿真中，指数+双曲正切这一多参数摩擦模型较之库仑摩擦模型能更精确地反映运动副耗散力的影响。, authors=^{沈 宏1，杜家熙1，康 锋2}, authorsList=沈 宏;杜家熙;康 锋, authorCompany=1. 河南科技学院机电学院，河南新乡 4530032. 宁夏天地奔牛银起设备有限公司，银川 750021, correspAuthors=null, authorNote=null, correspAuthorsNote=沈宏, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=R55R9gqcsc/PWunQvjM7OA==, pdfFileSize=817931, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null)}, authors=null, keywords=[Keyword(id=1242120117660750767, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1242120115571983180, language=CN, orderNo=1, keyword=多参数摩擦模型), 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