摘要
Acrucialsystemfortheoperationofhigh-speedtrainsisthepantographcatenaryinterfaceasitisthesoleresponsibletodeliverelectricalpowertothetrain.Beingthecatenaryastationarysystemwithalonglifespanitisalsolesslikelytoberedesignedandupgradedthanthepantographsthatfitthetrainvehicles.Thisletterproposesanoptimizationprocedurefortheimprovementofthecontactqualitybetweenthepantographandthecatenarysolelybasedontheredesignofthepantographheadsuspensioncharacteristics.Apantographmodelisdefinedandvalidatedagainstexperimentaldynamiccharacteristicsofexistingpantographs.Anoptimizationstrategybasedontheuseofaglobaloptimizationmethod,tofindthevicinityoftheoptimalsolution,followedbytheuseofadeterministicoptimizationalgorithm,tofinetunetheoptimalsolution,isappliedhere.Thespringstiffness,dampingcharacteristicsandbowmassarethedesignvariablesusedforthepantographoptimization.Theobjectiveoftheoptimalproblemistheminimizationofthestandarddeviationofthecontactforcehistory,whichisthemostimportantquantitytodefinethecontactquality.Thepantographheadsuspensioncharacteristicsareallowedtovarywithintechnologicalrealisticlimits.Itisfoundthatcurrenthigh-speedrailwaypantographshavealimitedpotentialformechanicalimprovements,notexceeding10%-15%onthedecreaseofthestandarddeviationofthecontactforce.
出版日期
2013年01月11日（中国期刊网平台首次上网日期，不代表论文的发表时间）
