基于现场总线技术的温室节点开发及控制策略研究

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1、浙江工业大学硕士学位论文基于现场总线技术的温室节点开发及控制策略研究姓名：杜辉申请学位级别：硕士专业：机械电子工程指导教师：胥芳20040501浙江工业大学硕士学位论文THEDESIGNANDRESEARCHOFGREENHOUSENODEANDCONTROLSTRATEGYBASEDONFIELDBUSTECHNOLOGYABSTRACTTheidea蛹射the盛埘busisintroducedintothefieldof乎锄ouscclimatecontrolinfacilitya班cultureisp

2、resentinthedissertation，andanodecontrolsystemofgreenhousefieldbaseduponfieldbustechnologyisdesigned．Thetemperaturedynamicmodelbasedonbalanceofheatingexchangeingreenhouseissetup，andthedynamicmodelofpipevapourtemperatureofheatingsystemissetup．Basedonthis，the

3、generalfuzzycontrolmethodofheatingsystemisimproved，thedissertationpresentthestrategythatfuzzycontrolcombinewithsmithpre-estimatecontrollertocomposefuzzy—smithpre—estimatecontrolsystem．Thecontentofthedissertationincluding：BasedoBdiscussingthepresentstudyofg

4、reenhouseclimatecontrol，thefLrstchapterintroducestheimportancethatthefieldbustechnologyisappliedtogreenhouseclimatecontrol，andexpatiatesthesignificance，purposeandcontentofthepaper．Thesecondchapterdiscusseddefine，characteristicandvirtueoffieldbus，analyzedco

5、nstitutionoffieldbuscontrolsystemanddifferencewithtraditionalDCS．TheconclusionisthatCANisthefieldbusthatadaptstogreenhouseclimatecontrolafterseveralpopularfieldbusisanalyzed，thecharacteristicandtechnicalspecificationofCANbusisdiscussed．Inthethirdchapter,ac

6、cordingthesystemicgeneralplan．thehardwarecircuitandthesoftwarepro目camofnodeoffieldlayerisdesigned．HardwarecircuitincludeprocesschannelmodulebaseduponI-wire，communicationmodulebaseduponCANbus，datastoremodulebasedon12Cbus，human—computerinteractionmodule，I／Oe

7、xtendedmoduleandsoon．UsingCandVisualC++6．0．thesoftwareofnode’smodulesandcommunicationofcentralmonitorlayerareprogrammed，respectively．CANcommunicationprotocolnsePeliCANmodeofCAN2．0Bprotocol，theformatofH塑垩三些查兰堡圭兰堡堡奎messageisextendedframes．Atlastnodesystemisd

8、ebugged．Theforthchapteranalyzesthephysicsprocessesofheatingexchangeingreenhouse，usestheprincipiummethodtosetupthedynamicmodelofgreenhousetemperaturebasedonheatingbalance．Basedonthismodel，themodelofgreenhouset