%0 Journal Article
%T Adaptive Stabilization Control of a Class of Large-scale Stochastic Nonlinear Systems with Time-delays and Unknown Virtual Control Coefficients<br>一类虚拟控制系数未知的随机非线性时滞大系统的适应镇定控制
%A ZHAO Ping
%A LIU Shu-Jun
%A <br>赵平
%A 刘淑君
%J 自动化学报
%D 2008
%I 
%X In this paper,the adaptive stabilization problem is investigated for a class of large-scale stochastic time-delay nonlinear systems with unknown virtual control coefficients and unknown noise covariances.First,corresponding to the unknown virtual control coefficients and unknown noise covariances,some parameters to be estimated are properly chosen. Then,in view of the effect of the time-varying delay on the stability of the closed-loop system,an suitable Lyapunov- Krasovskii functional is constructed,based on which and the well-known integrator backstepping method,a memoryless state-feedback control law is systematically designed.Under some mild conditions,it is shown that the equilibrium of the closed-loop system is globally stable in probability,and all the signals of the closed-loop system except for parameter estimates converge to zero almost surely.A simulation example is given to illustrate the effectiveness of the proposed approach.
%K Stochastic nonlinear systems
%K large-scale systems
%K time-delay
%K adaptive control
%K integrator backstepping<br>随机非线性系统
%K 大系统
%K 时滞
%K 自适应控制
%K 积分反推
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=E76622685B64B2AA896A7F777B64EB3A&aid=2CEFF7AEE548B232C46842F277D369FD&yid=67289AFF6305E306&vid=339D79302DF62549&iid=5D311CA918CA9A03&sid=F434A3C2A19884E7&eid=753F7A67351FADCC&journal_id=0254-4156&journal_name=自动化学报&referenced_num=0&reference_num=15