简介：介绍了汽车前照灯清洗器的工作方法，分析了其工作原理，并针对某种车型的前照灯清洗器喷嘴进行了主要结构参数的设计。建立了清洗器三维计算模型，做了喷射速度的仿真分析，仿真结果为清洗器的设计与优化提供了重要的参考依据。

简介：从USI(通用串行接口)及I2C的工作原理出发,以AVR系列Attiny26为例,详细的阐述了如何采用USI实现I2C的主机模式和从机模式,并简要介绍了如何利用Mastermode对EEPROM进行读写.

简介：

简介：OnDecember28,2000,theretrofittingprojectbyusing410t/hCFBCboilerinFengyiPowerPlant,JiangxiProvincewasstartedformally,whichindicatesthattheresearchanddevelopmentofcleancoalcombustiontechnologyinChinahasmadeasignificantbreakthrough.The410t/hCFBCboileradoptedint

简介：TheConstructionMachineryDivision(CMD)intheRe-searchInstituteofElectricPowerConstruction(EPCRI)isaR&Dorganizationspecializedonconstructionmachineryandtechnologyforthermalpowerstationandtransmission&distributionprojects.Itwasestablishedin1964.Therearenow45scientificre-

简介：纵向压电应变常数d33是表征压电陶瓷材料机电转换性能的重要参数之一.有别于常规的静态、动静态检测方式,设计了一种基于扫频方法的新型d33参数测试装置.通过检测不同频率信号激励时线路的电流变化,实现压电陶瓷d33参数的检测计算.该装置具有性能参数检测操作方便、检测过程效率高等特点.

简介：<正>ThepaperoutlinestheYangtzeThreeGorgeswaterconservancycomplex.ItdescribesthepowertransmissionanddistributionequipmentintheThreeGorgesLeftBankHydropowerStation,especiallylargehigh-voltagedistributiondevices.ItelaboratesthemeasuresforsuppressingGISover-voltageandthetestsonVFTO,besidestechnicalmeasurestoensuresafetyandstabilityofpowersysteminthestation.Italsomakessomeanalysesandsummariesabouttheproblemsencounteredinoperationoftheequipment.

简介：TheDevelopmentof3DCADtechnologypresentsaneweffectivetoolindesigningoutdoorswitchyardforpowerplant.Anewlayoutpatternof330kVswitchyard(SWYD)ofalignedtypewasstudiedwiththismethod.Someissuesaboutcomputerized3DmodesappliedinSWYDdesignarealsodiscussedinthispaper.

简介：300MWCFBCdemonstrationprojectinBaimaPowerPlant,SichuanProvinceisabackingprojectofimportingthedesignandmanufacturingtechnologyoflargesizeCFBCboilerbyusingtechnologyandtradecooperationmode.Thetotalprojectinvestmentamountstoabout1.8billionyuan(RMB),witha300MW

简介：Accordingtoperformanceanalysisofathree-phasegrid-connectedinvertermathematicalmodelofadirectly-drivenwindturbinewithapermanentmagnetsynchronousgenerator(D-PMSG)underunbalancednetworkvoltageconditions,adualcurrent-loopcontrolstrategy(DCC)orientedonpositivevoltageandnegativecurrentisproposedtoinhibittheDCvoltagefluctuation.Meanwhile,anotchfilterisintroducedintotheconventionalcontrolstrategyofaphase-lockedlooptocompletethelowvoltageridethrough(LVRT)abilityofthewindgenerator.A1.5-MWD-PMSGwithaback-to-backIGBTfrequencyconverterwassimulatedinthePSCAD/EMTDCenvironment,andsimulationresultsshowedthat:themaximumwindpowertrackingwasachievedinthissystemandtheproposedDCCstrategycouldsuccessfullyinhibittherisingagingofDCvoltageandenhancetheride-throughcapabilityofD-PMSGwindgenerationsystemunderunbalancednetworkvoltageconditions.