%0 Journal Article
%T 虚拟控制增益函数未知的随机非线性系统模糊自适应控制
%A 王迎春
%A 张化光
%A 王以忠
%J 自动化学报
%P 170-178
%D 2006
%X ？Theproblemoftrackcontrolisstudiedforaclassofstrict-feedbackstochasticnonlinearsystemsinwhichunknownvirtualcontrolgainfunctionisthemainfeature.First,theso-calledstochasticLaSalletheoryisextendedtosomeextent,andaccordingly,theresultsofglobalultimateboundednessforstochasticnonlinearsystemsaredeveloped.Next,anewdesignschemeoffuzzyadaptivecontrolisproposed.Theadvantageofitisthatitdoesnotrequireprioriknowledgeofvirtualcontrolgainfunctionsign,whichisusuallydemandedinmanydesigns.Atthesametime,thetrackperformanceofclosed-loopsystemsisimprovedbyadaptivemodifyingtheestimatederrorupperbound.Bytheoreticalanalysis,thesignalsofclosed-loopsystemsaregloballyultimatelyboundedinprobabilityandthetrackerrorconvergestoasmallresidualsetaroundtheoriginin4th-powerexpectation.
%K Stochasticnonlinearsystems
%K fuzzyadaptivecontrol
%K virtualcontrolgainfunction
%U http://www.aas.net.cn/CN/abstract/abstract16003.shtml