基于能耗最优化的动力定位推力分配逻辑算法研究

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1、基于能耗最优化的动力定位推力分配逻辑算法研究第15卷第3期2011年3月船舶力学JournalofShipMechanicsV01.15NO.3Mar.2011ArticleID:l007—7294(20II)03—0217—10OptimalThrustAllocationBasedonFuel?_.efficiencyforDynamicPositioningSystemYANGShi-zhi一,WANGLei29ZHANGShen(1ChinaClassificationSocietyNanjingBra

2、nch,Nanjing210011,China;2TheStateKeyLaboratoryofOceanEngineering,Shangha订iaoTongUniversity，Shanghai200240,China)Abstract:ThetwoseveralmethodsofthrustdistributioninapropulsionsystemofDynamicPosition-ingSystem(DPS)arepresentedinthispaper.Withdetailsimulationan

3、danalysis^thispapercon——centratesonfindingoutanoptimalthrustallocation(11A),whichcouldgaindesiredforcesandmo—mentsactingonthevehicleSOastokeepposition.Specialattentionispaidtoso

4、vethenon一linearconstrainedthrustallocationproblems.Andtheproposedmethodsaretoset

5、upaconfigurationmatrixwhichexactlydescribethelayoutofthrustersoftheDPpropulsionsystem.AnillustrativeexamplebasedonGeneticAlgorithm(GA)andSequentialQuadraticProgramming(SQP)isprovidedtodemon.stratetheeffectivenessandcorrectnessoftheproposedmethods.Fivealgorit

6、hmssuitedfordifferentcontrolconditionsarepresented.Keywords:ThrustAllocation(TA);DynamicPositioningSystem(DPS);GeneticAlgorithm(GA);SequentialQuadraticProgramming(SQP)CLCnumber:U664.3Documentcode:A1IntroductionAsthelastpotentialsupplierofnaturalresourcesande

7、nergiesaswellasprovisionsontheearth.theoceanisrequestedmoreandmoretorevealitssubstancestohumanbeings.Dynam一icPositioningSystemisthemostpromisingmeansofpositionkeepingfordeepseaexplo.-ration.whichisnotconfinedbydepthofwaterandhasmuchgreatadvantagescomparedwit

8、hmooringsystem.BesidesDPcouldserveasanauxiliaryofmooringsysteminshallowwatercondition,whichcouldenhancethecapabilityofmooringsystem.BasicsofDPareshowninFig.l.Thisworkismotivatedbythefuel-efficiencyoptimalcontrolallocationproblemintheDPpropulsionsystem,whichi

9、sessentialforDP.ThemaincontributionofthisworkistoanalyzetheobjectivefunctionandboundaryconditionbasedonGeneticAlgorithm(GA)andSequentialQuadraticProgramming(SQP).Inthispaper,wewilltrytosolvetheo