简介：结合恒张力放线设备现状，就恒张力放线车要实现的主要使用功能和与其相适应的结构做了初步探讨分析，能为恒张力放线设备的设计、生产和采购工作提供帮助。

简介：对比传统放线方法与RTK放线方法，分析原理，比较优劣，并提出RTK放线的控制方法．

简介：新批评(thenewCriticism)是现代西方一个很重要的文艺理论流派,它二十年代开端于英国,三十年代形成于美国,四、五十年代在美国文学界占统治地位。新批评派本身十分复杂,良莠不齐,通过仔细的阅读、分析,我认为,“张力论”所阐明的观点,所界定的评价作品(文本)的方法,与新批评“文本批评”注重形式与技巧,

简介：Forstudyingthedynamicperformanceofsubseaumbilicalcablelayingsystemandachievingthegoalofcabletensionandlayingspeedcontrol,therigidfiniteelementmethodisusedtodiscreteandtransformthesystemintoarigid-flexiblecouplingmulti-bodysystemwhichconsistsofrigidelementsandspring-dampingelements.ThemathematicalmodelofsubseaumbilicalcablelayingsystemkinematicchainispresentedwiththesecondorderLagrangeequationinthejointcoordinatesystem,anddynamicmodelingandsimulationisperformedwithADAMS.Thedynamicanalysisisconductedassumingthefollowingthreestatuses:ideallaying,practicallayingunderwavedisturbance,andpracticallayingwithtensioncompensation.Resultsshowthatmotiondisturbancesofthelayingbudgeunderseawaves,especiallywithheavingandpitching,willcauserelativelyseriousfluctuationsincabletensionandlayingspeed.Tensioncompensation,i.e.,activebacktensiontorquecontrolcanrestrictcontinuoustensionincreasingordecreasingeffectivelyandrapidly,thusavoidingcablebreachorbuckling.