简介：Operationaimofballmillgrindingprocessistocontrolgrindingparticlesizeandcirculationloadtoballmillintotheirobjectivelimitsrespectively,whileguaranteeingproducingsafelyandstably.Thegrindingprocessisessentiallyamulti-inputmulti-outputsystem（MIMO）withlargeinertia,strongcouplinganduncertaintycharacteristics.Furthermore,beingunabletomonitortheparticlesizeonlineinmostofconcentratorplants,itisdifficulttorealizetheoptimalcontrolbyadoptingtraditionalcontrolmethodsbasedonmathematicalmodels.Inthispaper,anintelligentoptimalcontrolmethodwithtwo-layerhierarchicalconstructionispresented.Basedonfuzzyandrule-basedreasoning（RBR）algorithms,theintelligentoptimalsettinglayergeneratestheloopssetpointsofthebasiccontrollayer,andthelattercantracktheirsetpointswithdecentralizedPIDalgorithms.Withthedistributedcontrolsystem（DCS）platform,theproposedcontrolmethodhasbeenbuiltandimplementedinaconcentrationplantinGansuprovince,China.Theindustrialapplicationindicatesthevalidationandeffectivenessoftheproposedmethod.

简介：Arecursiveidentificationmethodisproposedtoobtaincontinuous-timestate-spacemodelsinsystemswithnonuniformlysampled(NUS)data.Duetothenonuniformsamplingfeature,thetimeintervalfromonerecursionsteptothenextvariesandtheparameterisalwaysupdatedpartiallyateachstep.Furthermore,thisidentificationmethodisappliedtoformacombineddatacompressionmethodinNUSprocesses.Thedatatobecompressedarefirstclassifiedwithrespecttoaseriesofpotentiallyexisting(possiblytime-varying)models,andthenmodeledbytheNUSidentificationmethod.Themodelparametersarestoredinsteadoftheidentificationoutputdata,whichmakesthefirstcompression.Subsequently,asthesecondstep,theconventionalswingingdoortrendingmethodiscarriedoutonthedatafromthefirststep.Numericresultsfromsimulationaswellaspracticaldataaregiven,showingtheeffectivenessoftheproposedidentificationmethodandfoldincreaseofcompressionratioachievedbythecombineddatacompressionmethod.

简介：一个控制器为其在对给定的值作出回应特征的输出快速并且聪明地在焊接进程被控制的弧焊力量来源基于一个PID神经网络(PIDNN)被建议。新方法调和PID控制策略和神经网络聪明地控制焊接过程，因此它有PID控制规则和神经网络的更好的信息处理能力的特点的优点。模拟的结果证明控制器有快反应的性质，低射，快集中和好稳定的精确性，哪个会为焊接进程的控制的要求。