简介:Thispaperpresentsareal-timemechanismtotoleratefaultsoccurringinawindturbine(WT)system.ThissystemiscomposedofaFASTcodedsimulatordesignedbytheU.S.NationalRenewableEnergyLaboratory.Thedemonstratedmechanismliesunderthetaxonomyofactivefault-tolerantcontrol(FTC)systems,namelyonlineredesignbasedapproach.Intheproposedapproach,wedonotuseanyaprioriinformationaboutthemodeloftheturbineinreal-time.Infact,weuseonlinemeasurementsgeneratedbytheWT.Basedonthegivencontrolspecifications,andtheobservedmeasurementanoccurredfaultisaccommodatedbyreconfiguringtheonlinecontrollersuchthattheWTgeneratesratedpowerevenunderfaultyconditions.Second,noexplicitfaultdiagnosis(FD)moduleisusedinthisapproach.Asaresult,issuesofmodeluncertainty,falsealarms,etc.associatedwithanintegratedFDandcontrollerreconfigurationapproachtoFTCsystemsarenotexperiencedhere.
简介:在当前教学改革中,B/S结构软件开发应用于教育的教学方式不仅是当前形势需求,更进一步地蕴含着教学理论与教学实践的统一。根据B/S结构软件的自身特性,对B/S结构软件开发课程教学当前存在的现状及问题入手,就关键问题提出针对性的策略,本文提出要改善教学模式,包括让学生占据主导地位,增加师生交流等,要注重培养学生实践能力,要注重典型案例教学,如此才能有效改善B/S结构软件开发课程当前存在的困境。
简介:Aimingattheproblemssuchasmorerepeatedlydesignandlongerdesigncycle,inthispaper,thesimilaritytheorywasintroducedtothedesignprocessofthekeystructuresofflotationmachine.TheimpellerandU-shapedtankofflotationmachinesystemwereanalyzedassimilarityunit.Meanwhile,thelevelofsimilarityoftheunitsandthesimilarityofthesystemwerecalculated.BasedontheanalysisoftheimpellerandthesizeofU-shapedtank,thesimilaritycriteriawerederived.Thederivedconclusionsare:(1)Therelationshipbetweenthediameteroftheimpellerandthevolumeofthetankwaspowerfunctionandcalculatedasthesimilaritycriteriaoftheimpeller;(2)TherelationshipbetweentheratiobetweentheU-shapedtank’scross-sectionalareaandimpeller’sdiameterandthevolumeofthetankwaspowerfunctionandcalculatedasthesimilaritycriterionsoftheU-shapedtank.Usingthesimilaritycriterioncombinedwithcomputertechnologyanddatabasetechnologytorealizepartandsystemserializationdesign.Theresultsshowthattheresearchcanavoidrepeatedlydesign,shortendesigncycle,andraisethedesignefficiency.
简介:Vivo于8月2713在北京新中关举行了新品X5的线下活动会。此次体验会别出心裁的将体验部分放到了一辆被改造成KTV房样式的大巴上举行,大巴上的“KTV设备”就是Vivox5,也突出了vivoX5主打“KTV”功能的特点。被称为“K歌神器”的X5配备了高级独立Hi—Fi方案:定制版CS4398音频解码芯片,德州仪器高级输入芯片TLV320ADC以及AB类耳放MAX97220的,并且针对KTV功能首次在手机上内置了顶级YAMAHA数字环绕声信号处理芯片YSS205X—CZE2。此款芯片被业内誉为“卡拉OK界传奇芯片”,能够真实还原高档KTV包房的效果。
简介:当前材料数据存取量级增加,为解决当前平台性能问题,更快速的存取数据,提高客户的体验度,HTML5是由W3C发布的新一代HTML标准,强化网页层面的表现性能,并创建很多API接口,并利用这些接口,实现材料数据平台的离线存储技术,即节约网络资源,又提高系统的缓存技术,增强系统的鲁棒性,实现材料数据管理系统的本地化存储功能,进一步提高材料管理系统的性能,丰富材料数据管理平台的多形式化处理技术,提高服务水平。