螃蟹自動分級機的設(shè)計研究.pdf

1、揚州大學碩士學位論文螃蟹自動分級機的設(shè)計研究(申請碩士學位)季亞楠指導教師：張瑞宏教授揚州大學中華人民共和國，揚州2014年4月AbstractCrabisab11dofimportantandpreciousaquaticproductinourcountryIthashighnutritionalvaluesbyrichinprotein，calcium，phosphorus，potassium，etcnedemandofcrabs

2、alsoincreasedyearbyyearWiththecontinuousimprovementofpeople’Slivingqualityit’SanimportantpartofthegoodsonourmarketaboutthecrabweightclassificationArtificialweighingclassificationmethodsareusedfrequentlyHowever，duetothehi

3、lghdifficulty，lowefficiencybigintensityandlongtimeconsumingofartificialclassificationwork，itcantmeettheneedsofcommoditycrabseasonandkeepingcrabfreshInordertosolvetheproblemsabove，thisarticledescribesacrabweightclassifica

4、tionindexesofautomaticclassificationsystemdesignedbyourselveswhichisbasedonthestuddingofautomaticgradingsystemintheOtherareasathomeandabroadInthispapertheresearchcontentmainlyincludes：1Thepresentsituationofthecurrentandp

5、rospectcommoditymarketdevelopmentofcrabshouldbeinvestigatedInreferencetootherindustriesclassificationsystem，aswellasthedevelopingPLChadbeenwidelyusedinvariousfields，thedemonstrationdesignclassificationforweightindex，base

6、donthenecessity，feasibilityandimportanceofthePLCcrabautomaticcontrolsystemofclassifier，thedesignprincipleofclassifierwereputforward2ThedetailsofworkingprincipleandcompositionofcrabautomaticsortingmachineWasintroducedTheu

7、seofAutoCADpartsdrawings，CATIA3Dmodeling，thewholeinstitutionforADMAStocarryonthedynamicsimulationofthedischargeactuatortocompletetheoryofcrabautomaticclassifierdesignandthechoiceofimportantbuilding3Thispaperintroducedthe

8、crabautomaticallybasedonSiemensS7200seriesPLCcontrolsystemofclassifierdesignandexpoundsthecontrolstepmotorusingtheofficemoduleThehardwaredesignandsoftwaredesigniselaboratedontwopartstothegradingsystemofsoftwaredevelopmen

9、tHardwarebasedonthesystemcontrolrequirementsanalysisismainlyfocusedonthehardwarestructure，theselectionofPLCandthehierarchicalcontrolcircuitdesignOnthesoftwareaspects，itmainlyexpoundsthemethodsofcommunicationbetweencomput

10、erandPLCThecontrolofthecrabsautomaticclassifierclassificationsystemaredesignedthroughtheSTEP7MicroWINChineseprogrammingsoftware4Onthebasisofthecompletedstructuredesignandcontrolsystem，thecrabautomaticclassifierprototypeh