【英文标准名称】:Industrialautomationsystemsandintegration-Productdatarepresentationandexchange-Part108:Integratedapplicationresource:Parameterizationandconstraintsforexplicitgeometricproductmodels
【原文标准名称】:工业自动化系统和集成.产品数据表示和交换.第108部分:集成应用资源:显示几何产品模件用参数化和约束条件
【标准号】:ISO10303-108-2005
【标准状态】:现行
【国别】:国际
【发布日期】:2005-02-01
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC184
【标准类型】:()
【标准水平】:()
【中文主题词】:表示;自动化;计算机辅助设计;几何的;工业产品;产品数据;自动化系统;计算机应用;数据表示;信息交流;定义
【英文主题词】:automation;industrialproducts;datarepresentation;productdata;cad;geometric;automationsystems;definitions;definition;computerapplications;express;informationexchange
【摘要】:ThispartofISO10303specifiestheresourceconstructsfortherepresentationofmodelparametersandconstraints,togetherwiththemechanismsnecessaryforassociatingthemwithgeometricorotherelementsoftransferredmodels.Theuseofthesecapabilitiespotentiallyallowscertainaspectsofthebehaviourofamodelinitsoriginatingsystemtobeconveyedtogetherwiththebasicmodelitself.Theintentionintransferringthisadditionalinformationistoprovidethereceivingsystemwithdatathatwillenableittoreconstructcorrespondingbehaviouralcharacteristicsinthemodelfollowingthetransfer.Ideally,thiswillenablethemodeltobeeditedinthereceivingsystemjustasasthoughithadbeencreatedthere.Thatwouldnotbepossiblewithouttheexchangeofwhatisknownasdesignintentinformation.ThispartofISO10303enablesthecaptureandtransferofanimportantaspectofdesignintent.Clause4definesameansfortheassociationofmodelparameterswithindividualquantitiesinthemodel,toprovidefortheeditingofdimensionalvaluesandothervariableattributes.Clause5providesforthemodellingofconstraintrelationshipsintermsofmathematicalrelationshipsamongmodelparameters.Suchconstraintsarenotrestrictedtothemodellingofproductshape;theyaredesignedtobeapplicableinanysituationwhereitmaybeusefultocaptureandtransfermathematicallyspecifiedrelationships.Clause5alsodefinesaclassofdescriptive(non-mathematical)constraints.Clause6definesavariationalrepresentation,containingamodeltogetherwithalltheassociatedparametersandconstraintsthatpotentiallyfacilitateitseffectiveeditingfollowingatransfer.Clause7definesspecializedrepresentationsforasetofexplicitgeometricconstraintsapplicablespecificallytoelementsofshapemodelsoftheboundaryrepresentationandcloselyrelatedtypes.Thesearesubtypesofthedescriptiveconstraintsspecifiedinclause5.Finally,clause8providesrepresentationsfortwo-dimensionalsketches,whichformthebasisofmanyshapeconstructionmethodsinCADmodelling.Sketchesareanimportantapplicationareafortheparameterizationandconstraintinformationdefinedinearlierclauses.Thecapabilitiesprovidedinthisschemamayalsobeusedasabasisfortherepresentationofparameterizeddrawings.ThefollowingarewithinthescopeofthispartofISO10303:—Parameterizationofmodelsthroughtheassociationofvariableswithquantitiesoccurringinthem;—Constraintsdefiningmathematicalrelationshipsbetweenparameters;—Constraintsonmodelsexpressedasrelationshipsbetweentheirconstituentelementsorattributesofthoseelements;—Associationofparametersandconstraintswithmodelsattherepresentationlevel,tocreatevariationalmodelsofproducts,plans,processesororganizations;
【中国标准分类号】:N18
【国际标准分类号】:25_040_40
【页数】:168P.;A4
【正文语种】:英语


【英文标准名称】:EmergencyEngineCut-OffDevices
【原文标准名称】:应急发动机截断装置
【标准号】:ANSI/ABYCA-33-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:条件;应急的;发动机;船用发动机;巡航发动机;制动器
【英文主题词】:Conditions;Emergency;Engines;Marineengines;Propulsionengines;Stop
【摘要】:Thisstandardappliestodevicesthatstopthepropulsionengineunderemergencyconditions.Itisnotintendedtobeaninstantaneousdevicethatwillofferimmediateprotectionifthewearerfallsintothepathofthepropulsionsystem/rudder.
【中国标准分类号】:U40
【国际标准分类号】:47_020_20
【页数】:
【正文语种】:英语