简介：

简介：马达的配置被设计，动态分析方程基于它的简化模型被推出。利用栅栏的一个严峻的系统被设置测试这台新马达，和理论运动原则因为马达被实验证明。脉搏波形被使用驱使马达搬到步。马达有10nm和0.6mm/s的最大的速度的一个排水量决定。它能驾驶其范围是20公里的200g滑块。放站台的一个维的精确被使用新混合压电的马达制作。原型由二台伺服马达和二台压电的马达组成，它被一台计算机自动地控制。站台的放的范围是10厘米。

简介：Themainfocusisnonlinearmodel-baseddynamicpositioning(DP)controlsystemdesign.Anonlinearuniformglobalexponentialstability(UGES)observerproducesnoise-freeestimatesoftheposition,theslowlyvaryingenvironmentaldisturbancesandthevelocity,whichareusedinaproportional-derivative(PD)+feedforwardcontrollaw.Thestabilityofthisobserver-controllersystemisprovedbyintroducingaspecificnonlinearcascadedsystem.ThesimulationresultshavesuccessfullydemonstratedtheperformanceofdesignedDPcontrolsystem.

简介：Vehicularnodepositioningneedstobequickandpreciseonhighwayforsafetyconsidera-tion.Inthispaper,wepresentanovelandpracticalvehicularnodepositioningmethodwhichcanachieveahigheraccuracyandmorereliabilitythantheexistingglobal-positioning-system-basedpo-sitioningsolutionsbymakinguseofDoppler-shiftedfrequencymeasurementstakenbyvehicularnodeitself.Thispositioningmethodusesinfrastructurenodeswhichareplacedontheroadsideeveryseveralkilometersasradiationsourcestoestimatetherelativedistancesofvehicletotheinfrastructurenode.Throughcoordinateconversion,wegettheabsolutecoordinatesofvehicularnodebasedonknownabsolutecoordinatesofinfrastructurenode.Wealsoanalyzetheoptimaldistanceofneighborinfra-structurenodesinordertoensureahighaccuracy.Inaddition,simulationresultsdemonstratethattheaccuracyofourmethodwithExtendedKalmanFiltering(EKF)issuperiortothemethodwithoutEKF.