简介:Inordertoanalyzethespatialmaneuverabilityoftheremotelyoperatedunderwatervehicle(ROV),the6-DOFmotionmathematicmodeloftheROVwasfounded.HydrodynamicswereanalyzedbyusingtheTaylorseries.ThethrustersontheROVwerediscussed.Thispaperconsidersthreecasesofmotionsimulation:verticalmotion,rotationalmotionandZ-shapemotion.Aseriesofsimulationexperimentsshowedthatthe6-DOFmotionmathematicmodelwascorrectandreliable,andalsofitwiththescenesimulation.
简介:随着计算机计术的不断发展,计算机技术在各行业的应用日益广范。现就计算机(PC机)在建筑三维效果图上的应用进行探讨。1概述建筑三维模型的设计,主要分为两大步骤(流程图见图1):1.1第一步骤建模建模主要利用AutoCAD软件。AutoCAD软件是美国AUTODESK公司设计的一个图形设计软件,它具有绘图迅速,方便,精确,修改简易等优点,当前在世界各地均得到广泛的应用,成为CAD应用方面最流行的软件。1.2第二步骤渲染成图美国AUTODESK公司的另一个软件3DSStudio(简称3DS)也是当前十分流行的一个软件。该软件广泛应用于影视、广告、建筑及工程设计等领域。就建筑而言,主要用于在计算
简介:Thecriticaltechnicalproblemofunderwaterbottomobjectdetectionisfoundingastablefeaturespaceforechosignalsclassification.Thepastliteraturesmorefocusonthecharacteristicsofobjectechoesinfeaturespaceandreverberationisonlytreatedasinterference.Inthispaper,reverberationisconsideredasakindofsignalwithsteadycharacteristic,andtheclusteringofreverberationinfrequencydiscretewavelettransform(FDWT)featurespaceisstudied.Inordertoextracttheidentifyinginformationofechosignals,featurecompressionandclusteranalysisareadoptedinthispaper,andthecriterionofseparabilitybetweenobjectechoesandreverberationisgiven.TheexperimentaldataprocessingresultsshowthatreverberationhassteadypatterninFDWTfeaturespacewhichdiffersfromthatofobjectechoes.Itisproventhatthereisseparabilitybetweenreverberationandobjectechoes.