建筑环境与能源应用工程专业英语14课件

UnitFourteen

ControlandBuildingAutomationSystem宾洽曰篇兔尹琼颓创霜哀絮试梭摸攀赞谎难铃测妮链墩修巴谍雏炽灸青如建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14

UnitFourteen宾洽曰篇兔尹琼颓创霜哀絮试梭摸Whatisanintelligentbuilding?SchematicDiagramofanIntelligentBuildingSystem讶谗哦载晰本票滤楷差抓鉴瓶领掸的抽息蹈必颓滩臻厉滚姿褥坞喘酱汐零建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14WhatisanintelligentbuildinUptonow,therehasnotbeenauniversallyaccepteddefinitionforanIntelligentBuilding.MostexistingdefinitionsofIBaroundtheworldcentreontheneedforabuildingtobesuitablefortheoccupantstoworkandliveinsafely,comfortably,effectivelyandefficiently.“Intelligentbuildingissomethingthatmakestupid

peoplefeelnotasstupidastheyare”.羞龟舅辑程沧浆阻孕品策位啊寓宇陷筑炕跑抨锐刊捅笼对技糯僧喳蚊偶构建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14Uptonow,therehasnotbeenIntelligentBuildingcanbringusReducedResourceConsumption Bothhomeandbuildingtechnologyoffertremendouspotentialsavingsthroughintelligentcontrols.OptimizedConvenienceandMoreComfort Apartfromminimizingconsumptioncosts,privatehomeownerswillbeinterestedinhigherlevelsofconvenience,safetyandsecurity.噬攘豌汉株傻毁起器衣男宠径局冶咕痊眉譬故海借侨揖厉熊留桶今紫姐筷建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14IntelligentBuildingcanbringSmartHomeisanintegrationofvarioussystemsathomesuchassecurity,homeautomation,lightingcontrol,CCTVandentertainmentsystemwhichiscoordinatedbyasmarthomecontrollerandcontrolledbyusersusingvariouscentralizedcommandinterfacessuchasatouchscreens,keypads,universalremotecontrollers,internetbrowser,telephone,andevenyourLCDTVscreen.SmartHomeSystemsCCTV:ClosedCircuitTelevisionCCTV:ChinaCentralTelevision沤劝垂煌嗜诚独氟茎耳举渔烤咒村凑稍富锈腐衫症懈住摔都扑砾莉想颊菌建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14SmartHomeisanintegratiOn/offControlThecontroldevicecanbepositionedonlytoamaximumorminimumstate(e.g.,onoroff).BecauseOn/offcontrolissimpleandinexpensive,itisusedextensivelyforbothindustrialandcommercialcontrol.AtypicalhomethermostatthatstartsandstopsafurnaceisanexampleofOn/offaction.佳役歹颠选激审窄贱抱祈安祷寅郧穴帧袒磕雨韵猎得荚辙寐偶肯尼蔑辈蜕建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14On/offControlThecontroldeviFloatingControlDead(neutral)zone盲区停滞区抖曹掇往补定咎遍捉肮障漆却吴缨弯廷况歼炕杂还淳单摄忆断霓誓胞鹰炳建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14FloatingControlDead(neutral)Infloatingcontrol,thecontrollercanperformonlytwooperations—movingthecontrolleddevicetowardeitheritsopenorclosedposition,usuallyataconstantrate.Generally,aneutralzonebetweenthetwopositionsallowsthecontrolleddevicetostopatanypositionwhenthecontrolledvariableiswithinthedifferentialofthecontroller.Whenthecontrolledvariablefallsoutsidethedifferentialofthecontroller,thecontrollermovesthecontrolleddeviceintheproperdirection.openshutTimeUpperlimitLowerlimitneutralzoneTemperatureValve乃铰箔戮真九芳凭冲膊涪鸥逆锅嗜狂镁瓦祖孜乖仙但履锈盈嘴舷渊牙右恃建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14Infloatingcontrol,thecontrsetpointcontrolledvariableproportionalbandoutputoffsetProportionalcontrolrequiresacontinuouslyvariableoutputofthecontrolleddevice.Thecontrolsystemproducesanoutputwhichisproportionaltotheerrorsignal,i.e.thedifferencebetweenthevalueofthecontrolledvariableandthesetpoint.Proportionalcontrol

signalresponse较郁碰浇卧者宫磁厚碟鸥逸鸥析蛰射庸齿棺阳咀朗垣宏炙玻楞砖煞炯渡揩建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14setpointcontrolledvariableprIntegralcontrolDerivativecontrol

signalresponse远宵蔽垛胺躯焉颓作胀琴急箕褒冈网讣尼郊瓮幻鞍储钩您疾悯目在摔虏猛建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14IntegralcontrolDerivativeconProportionalplusIntegral(PI)ControlProportional-Integral-Derivative(PID)ControlProportionalAction.霓握驭翅竿返钳补雾煤乖陆尾襄蠕矮佑侍衡凰役住探顽迫贿痰果柑襄宦诚建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14ProportionalplusIntegral(PIClosedloopcontrolFeedbackAclosedlooporfeedbackcontrolmeasuresactualchangesinthecontrolledvariableandactuatesthecontrolleddevicetobringaboutachange.Thecorrectiveactioncontinuesuntilthevariableisbroughttoadesiredvaluewithinthedesignlimitationsofthecontroller.Thisarrangementofhavingthecontrollersensethevalueofthecontrolledvariableisknownasfeedback.篓溅米唉模口剖翘垄恫亮窟烩红哉堆盼泡粥狐赖滇熊胯涌汗孵铂诉坞汲尔建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14ClosedloopcontrolFeedbackAcExampleofFeedbackControlRoomAirTemperatureControl洋博峪藐纬蔚搞疫枷宰击捷廊纸蕴实脖样平寅盐摸叼喳歇妙恢束湃释植蛹建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14ExampleofFeedbackControl洋博峪OpenloopcontrolAnopenloopcontroldoesnothaveadirectlinkbetweenthevalueofthecontrolledvariableandthecontroller.Anopenloopcontrolanticipatestheeffectofanexternalvariableonthesystemandadjuststhesetpointtoavoidexcessiveoffset.Anexampleisanoutdoorthermostatarrangedtocontrolheattoabuildinginproportiontothecalculatedloadcausedbychangesinoutdoortemperature.Inessence,thedesignerpresumesafixedrelationshipbetweenoutsideairtemperatureandtheheatrequirementofthebuildingandspecifiescontrolactionbasedontheoutdoorairtemperature.Theactualspacetemperaturehasnoeffectonthiscontroller.Becausethereisnofeedbackonthecontrolledvariable(spacetemperature),thecontrolisanopenloop.庞担姻场甥雾览淖谩渺钻障闽喇善宗却沦唆初拔肪序某渊做栓笺禽劈您痉建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14OpenloopcontrolAnopenloopSingle-SeatedValvesDouble-SeatedValves单座阀双座阀肢傅吁于载舷邵塑砍拐溃找渔哎粳喀蝶姐始饥该鲍活滁瞩墙屉轩夺疆语弘建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14Single-SeatedValvesThree-WayMixingValvesThree-WayDivertingValves三路混合阀三路换向阀锋距稽砖拥睛纂恭剩程农嚼灯劈直疵垂栽缕听晕老凌挚凉买碗躬浚朋痢点建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14Three-WayMixingValvesTSensorsTemperatureSensorsHumiditySensorsPressureTransmittersandTransducersFlowRateSensorsIndoorAirQualitySensorsLightingLevelSensorsControllersPneumaticReceiver-ControllersElectric/ElectronicControllersDigitalControllersThermostats逮珍遭群姜纽蜀阅恋陪谈染绊渡翌碰俱渴蟹梨蚀泡翰劣弹恋氯梆拒太挪佬建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14Sensors逮珍遭群姜纽蜀阅恋陪谈染绊渡翌碰俱渴蟹梨蚀泡翰1.ControlModes

On/OffcontrolProportionalcontrolFloatingcontrolIntegralcontrolDerivativecontrolVariationandCombinationofbasicmodes2.Openandclosedloopcontrol

openloopcontrolclosedloopcontrol3.BuildingAutomationSystems3.1General3.2BasicConsiderations3.3ComputerBasedSystems

栖塌绿瞥须毕听诧扣汇靠六逃膊沤竿肖弛梦策欠类垦蹬乞亡逾炊歌瑚磕恃建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语141.ControlModes栖塌绿瞥须毕听诧扣汇靠六逃Frequentlyusedwordsandphrases:controlmode控制模式On/OffControl开/关控制Proportionalcontrol比例控制Floatingcontrol浮动控制Integralcontrol积分控制Derivativecontrol微分控制ProportionalplusIntegral(P+I)Control比例加积分控制ProportionalplusDerivative(P＋D)Control比例加微分控制ProportionalplusIntegralplusDerivative(P+I+D)Control比例加积分加微分控制finalcontrolelement(FCE)终端控制元件Openloopcontrol开环控制Closedloopcontrol闭环控制signal信号heaterbattery加热器组aircurtain空气幕sensor传感器electro-mechanicalsystem电动机械系统pneumaticsystem气动系统pressureswitch压力开关humidistat湿度控制器timeswitch定时开关buildingautomationsystem(BAS)建筑自动化系统energymanagementsystem(EMS)能源管理系统directdigitalcontrol(DDC)直接数字控制侵酸邮锦栖疮澡撇泪冗萍谦则冷汞坏酋稠咽默念竟躯际抚你牺占自危臂势建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14Frequentlyusedwordsandphra1.Acontrollercanbemadetooperateafinalcontrolelement(FCE),e.g.avalve,damper,orluminaireinanumberofdifferentwaysinresponsetoasignal.2.Thecontrolmodedoesnotdefinethemeansbywhichcontroliseffected,whichmaybethroughmechanical,electro-mechanical,electronicorpneumaticsystems.3.Thecontrolsensorusuallytakestheformofanon/offthermostat,pressureswitch,humidistat,timeswitch,etc.andoperatessuchthatbelowthesetpointthecontactsopen.controller:控制器finalcontrolelement(FCE):终端控制元件damper:闸板luminaire:照明signal:信号controlmode:控制模式electro-mechanical:机电的pneumatic:气动的on/off:开或关pressureswitch:压力开关humidistat:湿度调节器恒湿器觉啤淑军肺垫绽披劈寞芍伦蛛迅送初尔脏拷嗡逃呕页据膘娄囱侮笼搀垣汇建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语141.Acontrollercanbemadeto4.

Proportionalcontrolactionreferstoacontrolelementhavinganoutputsignalproportionaltoitsinputsignal.5.Ifthescalerangeofatemperaturecontrollerisfrom0oCto100oCandtheproportionalbandsettingissuchthatthecontrolledvariablemustchangefromthrough40oCto80oCtomakethevalvemovefromfullopentoshut,thentheproportionalbandis(80-40)/100=40%.6.Thismodeofoperationdependsontheuseofadead(neutral)zoneinthecontrolledvariable.Iportionalcontrol:

比例控制dead(neutral)zone:停滞区中性区correctingelement:修正元件pulsed:搏动的跳动的proportionalband:比例带fullopen:完全打开扛屈礼品抚联北丸啦阁挨宪脯蛊呼咆诡于绕覆苟窑厕秃杭洛郧寺满谓砂准建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语144.Proportionalcontrolaction8.Thisactionisusedtoeliminateovershootduringafastloadchange.Derivativecontrolismainlyappliedinspecialprocesssystems.9.Whilefloatingandproportionalcontrolactionsmaybeusedontheirown,derivativecontrolmustalwaysbeusedincombinationwithproportionalorfloatingaction.overshoot:超出超过过分loadchange:负荷变化derivativecontrol:微分控制Howtotranslate????酿掖滑叮症砷风圃菌蝶另孙笛掇慎痞乖牡嫌篆瞪熙硒枫康蔗埃忆盯抽窒骏建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14overshoot:超出超过过分loa10.Controlsystemsareappliedtocontrolloops,eachloopnormallycomprisingonesectionofanoverallplant,e.g.reheater,smokealarm.11.Whentheconditionofthecontrolledvariablechangesinclosedloopcontrolthesensordetectsthechangeandinitiatescorrectingactiontofinalcontrolelement.12.Theeffectofthisisreflectedinthecontrolledvariableandreassessedbysensorwhichcontinuouslyprovidesfeedbacktothecontroller.controlloops:控制环路comprising:构成reheater:再热器smokealarm:烟雾报警器closedloopcontrol:闭环控制detect:探测initiate:触发开始reassess:再评估feedback:反馈仑跑沽物帧小标吵绞喝最钡遂碴碌遁变帘吭氓漏挞格逝阵烈庚操趴稚积跨建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语1410.Controlsystemsareapplie13.Thesimplestformofsuchaloopwouldbethedetectionofsmokewherealocal/orremotealarmisinitiatedbyasmokedetectorwithoutanyfeedbacktothesmokesensor.15.Mostthermostaticcontrolmanufacturersnowmarketbuildingsautomationsystemstomonitorandcontrolotherbuildingservicessuchasenergy,securityandfireprotectionsystems.alarm:报警器smokesensor:烟雾传感器thermostatic:温度调节装置的market:使…进入市场security:安全fireprotectionsystems:防火系统驯拙决嘘侄瞩耽绊掂阎宪隶曙颧钎瓮帖叮恿保草掐隘烈籍悔淀执西恃绘拂建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语1413.Thesimplestformofsuch16.Itisalwaysadvisabletoquestionthelevelandvalidityofthesoftwareofferedtoperformthetasksrequiredinthecontextofbuildingservicesautomation.18.Oneotherareawhichrequiresemphasisisthepossiblesusceptibilityofallprocessorbasedsystemstoelectricalinterference,howevercaused.advisable:可取的明智的question:提出问题质询validity:有效性context:上下文领域emphasis:强调susceptibility:易感性interference:干扰干涉挛凡妖针伸铆采毖咯嗡萎锦做蝴搜屠螺庞止丝感拙硷悼盈挡皱犊导肤厅船建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语1416.Itisalwaysadvisableto19.Theprinciplesapplywhetherthesystemhasoneunitwith10-20pointsormultipleprocessorsandoutstationsserving10,000points.20.ItisessentialthatthespecificationforanyBASispreciselydetailed

intermsofallperformance,requirements,functionalsequencesandclearlydefinedinterfaceconditionsforeveryfacilityrequired.point:控制点outstation:设在边远地区的分站边远哨所远程控制中心BAS:buildingautomationsystems建筑自动化系统detail:详述细说intermsof:按照根据functionalsequence:功能顺序interfacecondition:界面条件facility:设施舶嗜酉片朗垢丁钳喧惨空惧么窟搽确狂函朵疗取我闽懂踏查宰拖销蔗臭曹建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语1419.Theprinciplesapplywheth22.Thecentralizationofthelogicequipmentallowsgreaterflexibilityofoperationsthanconventionalhardwiredsystemsandalsofreesmaintenancestafffromwatchkeepingduties,enablingmoreeffectiveuseofmanpower.23.Itmustbeconsideredveryearlyoninthebuilding/plantdesignconcept.Ifitisaddedatalaterstageitwillduplicateanumberofotherelementswhicharecompleteinthemselves.centralization:集中logicequipment:逻辑设备flexibility:灵活性hardwiredsystem:硬件系统staff:人员职员laterstage:后期duplicate:复制使…成双倍癣呀蜕砖倪张巷怪补郑田巾甸镜乡讳债送拆篮颤悍柿铁堂绅眨浴耍符抽奸建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语1422.Thecentralizationofthe25.Ifprocesscontrolistobeachievedbydirectdigitalcontrol(DDC)thensavingswilloccurintheelimination(of)cesscontrol：过程控制directdigitalcontrol(DDC):直接数字控制elimination:减少avoidance:避免镜凛甸拇厌宙签蛾财娜此霄贯悉仕坊饰沂驭续胰追脖蕾移余呼肾烈捞资牌建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语1425.Ifprocesscontrolistob26.Plannedandprogrammedmaintenanceschedulescanalsobeproducedandmonitoredbythecomputerbasedsystemsbutthisnormallyrequiresalargememorystoragecapabilityandconsiderableprojectorientatedinputdata.schedule:日程计划时间计划orientate:调整方向冕勃稿誉亲柒掠谣翰逗埔标邀澳衫张淤文纯凯孽赤贱刘拭胳脊邀始焊绦竟建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语1426.Plannedandprogrammedmai

UnitFourteen

ControlandBuildingAutomationSystem宾洽曰篇兔尹琼颓创霜哀絮试梭摸攀赞谎难铃测妮链墩修巴谍雏炽灸青如建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14

UnitFourteen宾洽曰篇兔尹琼颓创霜哀絮试梭摸Whatisanintelligentbuilding?SchematicDiagramofanIntelligentBuildingSystem讶谗哦载晰本票滤楷差抓鉴瓶领掸的抽息蹈必颓滩臻厉滚姿褥坞喘酱汐零建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14WhatisanintelligentbuildinUptonow,therehasnotbeenauniversallyaccepteddefinitionforanIntelligentBuilding.MostexistingdefinitionsofIBaroundtheworldcentreontheneedforabuildingtobesuitablefortheoccupantstoworkandliveinsafely,comfortably,effectivelyandefficiently.“Intelligentbuildingissomethingthatmakestupid

peoplefeelnotasstupidastheyare”.羞龟舅辑程沧浆阻孕品策位啊寓宇陷筑炕跑抨锐刊捅笼对技糯僧喳蚊偶构建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14Uptonow,therehasnotbeenIntelligentBuildingcanbringusReducedResourceConsumption Bothhomeandbuildingtechnologyoffertremendouspotentialsavingsthroughintelligentcontrols.OptimizedConvenienceandMoreComfort Apartfromminimizingconsumptioncosts,privatehomeownerswillbeinterestedinhigherlevelsofconvenience,safetyandsecurity.噬攘豌汉株傻毁起器衣男宠径局冶咕痊眉譬故海借侨揖厉熊留桶今紫姐筷建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14IntelligentBuildingcanbringSmartHomeisanintegrationofvarioussystemsathomesuchassecurity,homeautomation,lightingcontrol,CCTVandentertainmentsystemwhichiscoordinatedbyasmarthomecontrollerandcontrolledbyusersusingvariouscentralizedcommandinterfacessuchasatouchscreens,keypads,universalremotecontrollers,internetbrowser,telephone,andevenyourLCDTVscreen.SmartHomeSystemsCCTV:ClosedCircuitTelevisionCCTV:ChinaCentralTelevision沤劝垂煌嗜诚独氟茎耳举渔烤咒村凑稍富锈腐衫症懈住摔都扑砾莉想颊菌建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14SmartHomeisanintegratiOn/offControlThecontroldevicecanbepositionedonlytoamaximumorminimumstate(e.g.,onoroff).BecauseOn/offcontrolissimpleandinexpensive,itisusedextensivelyforbothindustrialandcommercialcontrol.AtypicalhomethermostatthatstartsandstopsafurnaceisanexampleofOn/offaction.佳役歹颠选激审窄贱抱祈安祷寅郧穴帧袒磕雨韵猎得荚辙寐偶肯尼蔑辈蜕建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14On/offControlThecontroldeviFloatingControlDead(neutral)zone盲区停滞区抖曹掇往补定咎遍捉肮障漆却吴缨弯廷况歼炕杂还淳单摄忆断霓誓胞鹰炳建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14FloatingControlDead(neutral)Infloatingcontrol,thecontrollercanperformonlytwooperations—movingthecontrolleddevicetowardeitheritsopenorclosedposition,usuallyataconstantrate.Generally,aneutralzonebetweenthetwopositionsallowsthecontrolleddevicetostopatanypositionwhenthecontrolledvariableiswithinthedifferentialofthecontroller.Whenthecontrolledvariablefallsoutsidethedifferentialofthecontroller,thecontrollermovesthecontrolleddeviceintheproperdirection.openshutTimeUpperlimitLowerlimitneutralzoneTemperatureValve乃铰箔戮真九芳凭冲膊涪鸥逆锅嗜狂镁瓦祖孜乖仙但履锈盈嘴舷渊牙右恃建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14Infloatingcontrol,thecontrsetpointcontrolledvariableproportionalbandoutputoffsetProportionalcontrolrequiresacontinuouslyvariableoutputofthecontrolleddevice.Thecontrolsystemproducesanoutputwhichisproportionaltotheerrorsignal,i.e.thedifferencebetweenthevalueofthecontrolledvariableandthesetpoint.Proportionalcontrol

signalresponse较郁碰浇卧者宫磁厚碟鸥逸鸥析蛰射庸齿棺阳咀朗垣宏炙玻楞砖煞炯渡揩建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14setpointcontrolledvariableprIntegralcontrolDerivativecontrol

signalresponse远宵蔽垛胺躯焉颓作胀琴急箕褒冈网讣尼郊瓮幻鞍储钩您疾悯目在摔虏猛建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14IntegralcontrolDerivativeconProportionalplusIntegral(PI)ControlProportional-Integral-Derivative(PID)ControlProportionalAction.霓握驭翅竿返钳补雾煤乖陆尾襄蠕矮佑侍衡凰役住探顽迫贿痰果柑襄宦诚建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14ProportionalplusIntegral(PIClosedloopcontrolFeedbackAclosedlooporfeedbackcontrolmeasuresactualchangesinthecontrolledvariableandactuatesthecontrolleddevicetobringaboutachange.Thecorrectiveactioncontinuesuntilthevariableisbroughttoadesiredvaluewithinthedesignlimitationsofthecontroller.Thisarrangementofhavingthecontrollersensethevalueofthecontrolledvariableisknownasfeedback.篓溅米唉模口剖翘垄恫亮窟烩红哉堆盼泡粥狐赖滇熊胯涌汗孵铂诉坞汲尔建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14ClosedloopcontrolFeedbackAcExampleofFeedbackControlRoomAirTemperatureControl洋博峪藐纬蔚搞疫枷宰击捷廊纸蕴实脖样平寅盐摸叼喳歇妙恢束湃释植蛹建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14ExampleofFeedbackControl洋博峪OpenloopcontrolAnopenloopcontroldoesnothaveadirectlinkbetweenthevalueofthecontrolledvariableandthecontroller.Anopenloopcontrolanticipatestheeffectofanexternalvariableonthesystemandadjuststhesetpointtoavoidexcessiveoffset.Anexampleisanoutdoorthermostatarrangedtocontrolheattoabuildinginproportiontothecalculatedloadcausedbychangesinoutdoortemperature.Inessence,thedesignerpresumesafixedrelationshipbetweenoutsideairtemperatureandtheheatrequirementofthebuildingandspecifiescontrolactionbasedontheoutdoorairtemperature.Theactualspacetemperaturehasnoeffectonthiscontroller.Becausethereisnofeedbackonthecontrolledvariable(spacetemperature),thecontrolisanopenloop.庞担姻场甥雾览淖谩渺钻障闽喇善宗却沦唆初拔肪序某渊做栓笺禽劈您痉建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14OpenloopcontrolAnopenloopSingle-SeatedValvesDouble-SeatedValves单座阀双座阀肢傅吁于载舷邵塑砍拐溃找渔哎粳喀蝶姐始饥该鲍活滁瞩墙屉轩夺疆语弘建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14Single-SeatedValvesThree-WayMixingValvesThree-WayDivertingValves三路混合阀三路换向阀锋距稽砖拥睛纂恭剩程农嚼灯劈直疵垂栽缕听晕老凌挚凉买碗躬浚朋痢点建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14Three-WayMixingValvesTSensorsTemperatureSensorsHumiditySensorsPressureTransmittersandTransducersFlowRateSensorsIndoorAirQualitySensorsLightingLevelSensorsControllersPneumaticReceiver-ControllersElectric/ElectronicControllersDigitalControllersThermostats逮珍遭群姜纽蜀阅恋陪谈染绊渡翌碰俱渴蟹梨蚀泡翰劣弹恋氯梆拒太挪佬建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14Sensors逮珍遭群姜纽蜀阅恋陪谈染绊渡翌碰俱渴蟹梨蚀泡翰1.ControlModes

On/OffcontrolProportionalcontrolFloatingcontrolIntegralcontrolDerivativecontrolVariationandCombinationofbasicmodes2.Openandclosedloopcontrol

openloopcontrolclosedloopcontrol3.BuildingAutomationSystems3.1General3.2BasicConsiderations3.3ComputerBasedSystems

栖塌绿瞥须毕听诧扣汇靠六逃膊沤竿肖弛梦策欠类垦蹬乞亡逾炊歌瑚磕恃建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语141.ControlModes栖塌绿瞥须毕听诧扣汇靠六逃Frequentlyusedwordsandphrases:controlmode控制模式On/OffControl开/关控制Proportionalcontrol比例控制Floatingcontrol浮动控制Integralcontrol积分控制Derivativecontrol微分控制ProportionalplusIntegral(P+I)Control比例加积分控制ProportionalplusDerivative(P＋D)Control比例加微分控制ProportionalplusIntegralplusDerivative(P+I+D)Control比例加积分加微分控制finalcontrolelement(FCE)终端控制元件Openloopcontrol开环控制Closedloopcontrol闭环控制signal信号heaterbattery加热器组aircurtain空气幕sensor传感器electro-mechanicalsystem电动机械系统pneumaticsystem气动系统pressureswitch压力开关humidistat湿度控制器timeswitch定时开关buildingautomationsystem(BAS)建筑自动化系统energymanagementsystem(EMS)能源管理系统directdigitalcontrol(DDC)直接数字控制侵酸邮锦栖疮澡撇泪冗萍谦则冷汞坏酋稠咽默念竟躯际抚你牺占自危臂势建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14Frequentlyusedwordsandphra1.Acontrollercanbemadetooperateafinalcontrolelement(FCE),e.g.avalve,damper,orluminaireinanumberofdifferentwaysinresponsetoasignal.2.Thecontrolmodedoesnotdefinethemeansbywhichcontroliseffected,whichmaybethroughmechanical,electro-mechanical,electronicorpneumaticsystems.3.Thecontrolsensorusuallytakestheformofanon/offthermostat,pressureswitch,humidistat,timeswitch,etc.andoperatessuchthatbelowthesetpointthecontactsopen.controller:控制器finalcontrolelement(FCE):终端控制元件damper:闸板luminaire:照明signal:信号controlmode:控制模式electro-mechanical:机电的pneumatic:气动的on/off:开或关pressureswitch:压力开关humidistat:湿度调节器恒湿器觉啤淑军肺垫绽披劈寞芍伦蛛迅送初尔脏拷嗡逃呕页据膘娄囱侮笼搀垣汇建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语141.Acontrollercanbemadeto4.

Proportionalcontrolactionreferstoacontrolelementhavinganoutputsignalproportionaltoitsinputsignal.5.Ifthescalerangeofatemperaturecontrollerisfrom0oCto100oCandtheproportionalbandsettingissuchthatthecontrolledvariablemustchangefromthrough40oCto80oCtomakethevalvemovefromfullopentoshut,thentheproportionalbandis(80-40)/100=40%.6.Thismodeofoperationdependsontheuseofadead(neutral)zoneinthecontrolledvariable.Iportionalcontrol:

比例控制dead(neutral)zone:停滞区中性区correctingelement:修正元件pulsed:搏动的跳动的proportionalband:比例带fullopen:完全打开扛屈礼品抚联北丸啦阁挨宪脯蛊呼咆诡于绕覆苟窑厕秃杭洛郧寺满谓砂准建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语144.Proportionalcontrolaction8.Thisactionisusedtoeliminateovershootduringafastloadchange.Derivativecontrolismainlyappliedinspecialprocesssystems.9.Whilefloatingandproportionalcontrolactionsmaybeusedontheirown,derivativecontrolmustalwaysbeusedincombinationwithproportionalorfloatingaction.overshoot:超出超过过分loadchange:负荷变化derivativecontrol:微分控制Howtotranslate????酿掖滑叮症砷风圃菌蝶另孙笛掇慎痞乖牡嫌篆瞪熙硒枫康蔗埃忆盯抽窒骏建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语14overshoot:超出超过过分loa10.Controlsystemsareappliedtocontrolloops,eachloopnormallycomprisingonesectionofanoverallplant,e.g.reheater,smokealarm.11.Whentheconditionofthecontrolledvariablechangesinclosedloopcontrolthesensordetectsthechangeandinitiatescorrectingactiontofinalcontrolelement.12.Theeffectofthisisreflectedinthecontrolledvariableandreassessedbysensorwhichcontinuouslyprovidesfeedbacktothecontroller.controlloops:控制环路comprising:构成reheater:再热器smokealarm:烟雾报警器closedloopcontrol:闭环控制detect:探测initiate:触发开始reassess:再评估feedback:反馈仑跑沽物帧小标吵绞喝最钡遂碴碌遁变帘吭氓漏挞格逝阵烈庚操趴稚积跨建筑环境与能源应用工程专业英语14建筑环境与能源应用工程专业英语1410.Controlsystemsareapplie13.Thesimplestformofsuchaloopwouldbethedetectionofsmokewherealocal/orremotealarmisinitiatedbyasmokedetectorwithoutanyfeedbacktothesmokesensor.15.Mostthermostaticcontrolmanufacturersnowmarketbuildingsautomationsystemstomonitorandcontrolotherbuildingservicessuchasenergy,securityandfireprotectionsystems.alarm:报警器s