基于小生境遗传模拟退火算法的液压集成块布局优化

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1、机床与液压Dec．2012HydromechatronicsEngineeringVo1．40No．24DOI：10．3969／j．issn．1001-3881．2012．24．O11AllocationOptimizationofHydraulicManifoldBlockBasedonNichingGeneticSimulatedAnnealingAlgorithmZHANGLijie，ZHANGYanhui，LIYukunHebeiKeyLaboratoryofHeavyMachineryFluidPowerTra

2、nsmissionandControl，YanshanUnweni@，Qinhuangdao066004，ChinaAbstract：Allocationoptimizationofhydraulicmanifoldblock(HMB)isthefoundationforoptimi．zationdesignofHMB．Thispaperestablishesamathematicalmodelofmulti．objectiveoptimiza．tionwithperformanceconstraintsaccordin

3、gtothestructuralfeatureofHMBanddesigncharac．ter．Thenthemathematicalmodelwassolvedbynichinggeneticsimulatedannealingalgorithm(NGSA)．TheexamplegiveninthispaperindicatesthatthelayoutoptimizationofHMBcanbewellcompletedbyNGSA，whichprovidesareferenceforallocationdesign

4、．Keywords：hydraulicmanifoldblock，optimizationdesign，nichinggeneticsimulatedannealinga1．gorithmcreaseglobalsearchabilityandtheconvergence1．Introductionspeed[3]．ThepaperpresentsahybridalgorithmcombiningGAwithSA，whichsolvesthesingleob．OptimizationdesignofHMBisacompl

5、icatedjectiveoptimizationproblemsofintegratedblockprocess．Andspacelayoutisthebasisofhydraulicchannelsnetworkl4I．Combine(1thebasicnichewithmanifoldblockdesign．AtpresentdesignersmostlyGAandSA，ahybridalgorithmisproposed．Thisa1．dependonexperiencesandspaceimaginationo

6、rsim—gorithmcanmaintainthesolutionsdiversity．Inaddi．plytheapplicationofasinglealgorithmsuchasge—tion，itcanenhancetheconvergencespeedandtheneticalgorithm(GA)orsimulatedannealing(SA)qualityofsolutioneffectively．Nevertheless，duetotoSOlVethelayoutproblem[1—2]．Thespac

7、elayoutthishybridalgorithmdoesnotconsidertheconstraintresultcannotguaranteetomeettheoptimalperform．rulesanddesignexperience，applicationresultsofanceindexbecauseofthediversityofallocationde．thishybridalgorithmshowthatitmaynotsatisfyac-signandthecomplexityofsolutio

8、nprocedure．tualrequirementofengineeringapplications．TothisGAshowsitsstrongglobaloptimalcharacteristicrespect，bycombiningthenichinggeneticsimulatedwhereasitscon