基于现场总线的热工控制系统研究及其组态程序开发

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1、申请同济大学工学硕士学位论文基于现场总线的热工控制系统研究及其组态程序开发培养单位：机械工程学院一级学科：动力工程及工程热物理二级学科：热能工程研究生：任洪波指导教师：周伟国教授副指导教师：任建兴教授二oo六年一月AbstractABSTRACTNowadays，asthedevelopmentofinformationtechnology，thetraditionalwayofmonitorandcontrolhasbeeninfluenceddeeply．Fieldbustechnologyisbecomingmoreandmo

2、repopularbecauseofitssimplenessinstructureandeasinessinmaintainandhi曲reliabilityandopenness．ControlsystembasedonFieldbushascausedanepoch—makingchangeinindustrycontrolrealm．Theautomationofthermalcontrolsystemhasalwaysbeenahotpointinindustrycontrolrealm．Thispaperintroduc

3、esthebasicstructureandrealizationofthermalcontrolsystembasedonPROFIBUS．ConventionalPID—typecontrollershaveplayedadominantroleintheheatexchangersystemsduetoitssimplecontrolstructureandeaseofdesign．However,PID—typecontrollersmayencounterproblemssuchaslargeovershootandeve

4、npoorstabilityinthecontrolofplantswithtimedelay．Inrecentyears，plentyofadvancedcontroltechniqueshavebeendeveloped．FuzzyLogicControlisoneofthesenewparadigmsandhasbecomeveryattractiveinindustrialpractices．Becauseofitscapabilitytoemulatehumanthinkingandhumanilfferenceandto

5、capturetheinexactinformationoftheplant，FuzzyLogicController(FLC)oftenyieldssatisfactoryperformances．Thispaperdesignsthecontrolsystemofacross-flowair／waterheatexchanger,inordertoindicatetheuseofFuzzyLogicControlinthermalcontr01realm．Inthewateroutlettemperaturecontr01．th

6、ispaperUSeSMaⅡabtosimulatethePIDcontrol，Fuzzycontr01．andalsotheFuzzy—PIDtwo—modecontr01．SimulationresultsillustratetbattheFuzzyControlleriseffectiveinsuppressingthemaximumovershootmadinreducingthedecayingoscillationcycles．Inordertorealizethecontrolarithmetic，thispaperu

7、sesthePLC，anddesignstheprogramsofbothPIDcontrolandFuzzycontr01．Intheend，thispaperusestheconfigurablesoftwareKingviewtoconfigurethewholecontrolsystem．Thesoftwarecanachievedatacollectioninside，real-timedataandhistorydatacanbedisplayed，real—timecurveandhistorycllrvecanbep

8、ictured，real．timemodifythecontrolledparameter,bythefollowuptoachievereal-timemonitorandcontrolofthesystem．KeyWords：Fi