针对液压挖掘机系统控制参数的免疫优化整定方法

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1、HydromechatroniesEngineering机床与液压DOI：10．3969／j．issn．1001—3881．2012．06．014Immune—basedOptimizationTuningModelofControllerParameterinHydraulicExcavatorSystemHUANGLichao，CHENGSenlin，QINRenchao(1．SchoolofMachineryEngineering，ChongqingIndustryPolytechnicCollege，Chongqing401

2、120，China；2．CollegeofAutomation，ChongqingUniversity，Chongqing400044，China；3．CollegeofComputerScience，SouthwestUniversityofScience&Technology，Mianyang621010，China)Abstract：Hydraulicpressuretransmissionisanervoussystemofengineeringmachinery，andavariablepumpisthecentralne

3、rvoussystemofhydraulicpressuresystem，thereforetheperformanceofthepumpwilldirectlydeterminetheperformanceandeficiencyofengineeringmachinery．SincetheswitchingmechanismofcontrolmachineryinsteppermotorcouldbettersatisfythematchtorealizetheCVTtransmissionamongthevariableflo

4、whydraulicpump，hydraulicvalveandhydraulicactuatingcylinder，anditcouldnotrealizetheoptimalpowerperformanceandtheoptimaleconomycontrolofcurrentfuel，asortofimmune—basedoptimizationtuningmethodforcontrollerparameterisproposedinthispaper．Thismethodtooktheobjectivefunctionof

5、energyconservationastheconstraints，andtheobjectiveconstraintswillbedirectlyintroducedintotheoptimizationprocessofcontrollerparameter，bymeansofimmune—basedoptimizationalgorithm，theselectedcontrollerparametercouldnotonlyensurethecontrolqualityofthesystemindynamicalandsta

6、ticperformance，butalsogiveattentiontotwoormorethingsofoptimalityinenergyconservation．Inthispaper，thecomparisonsbetweendifferentcontrolalgorithmhasbeenmadeandtheresponsecurvesofsystemshowthatthepro—posedmethodhasbettercontroleffectforthetuningparameters．Therefore，thisme

7、thodisreasonableandfeasibleinthecontrolsystemofhydraulicexcavator．Keywords：hydraulicexcavator，parameteroptimization，intelligentcontroller，immunetheory，cloneselection，muta—tion，parametertuningtheoperationprocess，itisdifficultforthetuningof1Introductioncontrollerparamete

8、rtogiveattentiontotwoormorethingssuchasenergyconservationandcontrolqualityThematchingandcontrolofreasonableparame·ofs