Abstract
Title:KINEMEATICSRESEARCHANDPATHPLANINGOFDELTA
PARALLELMANIPULATOR
Major=Mechanicaldesignandtheory
Name=DengMengSignature.且糊
Supervisor=AssociateProfessorWangJingpingsIgnature:显心哟防
Abstract
Inthefood、packagingandotherindustries,themanipulatorareusuallyrequiredtoachievethepickandplaceoperationssuchaspackaging、sorting、encapsulationandSOonwithhigh.speed,accuracyandsmooth.ParallelmechanismhasvastapplicationprospectsInthehigh-speedlightmanipulatorbecauseofthecharacteristicofhighrigidity,superiorcarryingcapacity,highaccuracyandsmallself-weightloadratioetc.
ThisthesistakestheDeltaparallelmechanism弱theresearchobject,firstly,mechanismWassimplifiedaccordingtoitsstructuralfeatures,constraintequationsoftheDeltaparalleln伦c】【12幽【ismwasestablished,theinverseanalyticsolutionofthepositionandtheforwardnumericalsolutionofthepositionwereobtained.BaseOllthat,velocity、accelerationofmemechaIlismwasanalyzed,theJacobianmatrixWasdeduced.Secondly,thesystemdynamicsmodelwasestablishedbyusingtheLagrangeequations,inordertorealizethecomputationaldccoupling,thesysteminertiamatrixWascalculatedindividuallybyapplicationofkineticenergytheorembeforemodeling.
ThekinematicalperformanceoftheDeltaparallelmechanismWasanalyzedinthethesis,theanalyticalexpressionsoftheDeltaparallelmechanismsingle--open-chainsub‘ spaceboundarysurfaceandtheworkspaceoftheDeltaparallelmechanismwereobtainedbasedoncurveenvelopetheory.Bygiventhestructuralparameters,operabilityandJacobianmatrix’sconditionIl_哪nberintheX-Ysectiondistributionchartsweresimulated,thesimulatedresultssll0WthatthemotiontransmissionperformanceiSgood.
.Finally,withthegoalofshortestworkcycleandstability,thesinemotionlaw、5-polynomialandmodifiedtrapezoidalmotiontrajectoryfunctionbythestraightlineandare缸ansitiontrajectorymodelswereappliedtotrajectoryplanningfortheDeltaparallelmaIlipulator.Theconclusionswereobtainedthatthemodifiedtrapezoidalmotiontrajectoryhasshortercycleandhigherefficiencythantheothertwomotions,thesimulatedcurvesofarc