多跨门式刚架的设计专家系统的的研究.pdfVIP

多跨门式刚架设计专家系统的研究 摘 要 于家系统是一种智能型的计算机程序，它运用知识和推理来解决只有专家才能解决 的复杂问题。在众多的人工智能研究领域中，专家系统是一个最富有代表性和最重要的 应用分支。从1968年DENDRAL专家系统研制成功到20世纪70年代中期，它的应用逐 渐渗透到N疗、自然语言处理·数学及地质等多个领域少·- 在中国，轻型钢结构的应用日趋广泛，研究和开发轻钢结构智能的优化设计软件， 必将促进我国轻钢结构的进一步发展。 多跨门式刚架设计专家系统是以windows2000为平台，采用面向对象的语言visual 设计的目的。 关键词:专家系统:门式刚架;产生式规则;040退气 ResearchonExpertSystemfortheDesignofMulti-spanSteelPortalFrames Abstract Theexpertsystem isakindofintellectualcomputerprogram,anditcanapply knowledgeandinferencetoresolvecomplexproblems,whichonlycanberesolvedbythe experts.Amongmanyartificialintelligencesresearchingfields,theexpertsystemisthemost typicalandthemostimportantsub-fieldinapplication.Fromtheyear1968whentheexpert systemofDENDRALwasdevelopedsuccessfullytotheMid1970s,itwasappliedinmedical treatment,naturelanguage,mathematicsandgeology,etc. InChina,thelightsteelstructurehasbeenusedwidespread.Studyinganddevelopingthe computeranalysisandoptimizationdesignoflightsteelstructurewillacceleratethe developmentoflightsteelstructure. Theexpertsystemforthedesignofmulti-spansteelportalrfamesisusedincomputer withwindows2000 .The anddevelopedwithobject-orientedlanguagevisualbasic6.0 knowledgeofthisexpertsystemcomesrfomexperts,criterionandcorrelativeliteratureandit isexpressedasproceduralknowledgeanddeclarativeknowledge.Proceduralknowledge includescheckingslendernessratio,calculatingeffectivecrosssectionarea,checking displacement,checkingstrength,checkingstabiliytinplaneandoutplane.Thisknowledgeis stablerelatively,andcanformindependentcomputationalmodule.Thispaperprovidestheir flowcharts.Declarativeknowledgeincludesproductionruleofabecedarianselection cross-sectionandconstraincross-section.Thisexpertsystemhasestablishedinferenceengine, whichwasdevelopedbyproductionruleandsimul