環(huán)件軋制進(jìn)給控制模型與仿真研究.pdf

1、武漢理工大學(xué)碩士學(xué)位論文環(huán)件軋制進(jìn)給控制模型與仿真研究姓名：阮維申請學(xué)位級別：碩士專業(yè)：材料加工工程指導(dǎo)教師：華林20080501武漢理工大學(xué)碩士學(xué)位論文AbstractRingrollingisanenergyandmaterialcost—savinghighversatilityandhigh—efficiencyadvancedmanufacturingtechnologywithwhichthediameteroftherin

2、gincreasesandtheprofileisformedastheringcrosssectiondecreasesbycontinuouslypartialplasticdeformationaccumulationFeedspeedcontrolisoneofthemostimportantfactorstoensurehighqualityoftheringduringringrollingprocess，andration

3、alfeedspeedisthepreconditionofsteadyrollingSoitisimportanttocontrolfeedspeedduringringrollingRareresearchaboutfeedspeedcontrolisreportedSOfarAPIcontrollerisdesignedtocontrolthepressurerollmovementtotrackadesiredfeedspeed

4、curveduringtherollingprocessAphysicalmodeloftherollingmillcontrolsystemisintroducedbasedontheworkprincipleofrollingmillThedynamicequationsdescribingtheringrollingprocessareobtainedbyanalyzingthephysicalrelationshipofthem

5、odelThemathematicmodelisalsoformulatedwhentheparametersinthedynamicaredeterminedAtthesametime，aPIcontrollerisdesignedtocontrolthepressurerollmovementtotrackadesiredfeedspeedcurveduringtherollingprocessThenasimulationmode

6、lofthefeedspeedcontrolsystemisfoundedinMATLAB／SIMULINKDynamicresponsesofthepressurerollaresimulatedtoexaminethetrackingperformanceofthecontrolsystemundertwocurvesofthedesiredfeedspeedandthestepdecreasefeedspeedEffectsoft

7、heintegralandproportionalcontrollergainsontrackingperformancearediscussedindetailThevaluesofproportionandintegralcontrollergainarealsodeterminedwhenthetrackingerrorofsystemreachesitsminimumThesimulationresultsshowthatthe

8、controlsystemcanrespondfastThemathematicmodelandsimulationmodelofD56G90rollingmillarefoundedinthispaperDynamicresponsesofthepressurerollaresimulatedtoexaminethetrackingperformanceofthecontrolsystemunderthestepdecreasefee

9、dspeedAnexperimentisdesignedtoprovethesimulationresultsTheresultsoftheexperimentandthesimulationarenearlythesame，whichshowsthatthecontrolsystemhavegoodtrackingperformanceFormoreconvenienceininvestigatingtheeffectsontrack

10、ingperformanceofcontrollergainsandphysicalparameters，aparametrictableisdesignedusingGUImethodsinMATLAB，whichincludeauserinterface，asimulationmodelandaMfileThedynamictrackingperformanceofthecontrolsystemcallbcobservedreal