Delay-independent stabilization of linear systems with time-varying delayed state and uncertainties

The problem of robust stabilization for a class of dynamic systems with time-varying state delay as well as parametric and input uncertainties is considered in this paper. Several delay-independent stabilizability criteria and memoryless state feedback controllers are presented to guarantee the asymptotic stability of the closed-loop uncertain time-delay systems. It is shown that if all uncertainties and delay terms are matched, then the mentioned systems can always be stabilized, or can be stabilized with a specified decaying rate.     

论加强执政党建设

经济要发展，稳定是前提。社会要稳定，就必须加强执政党的建设。目前中国共产党建设的当力之急是反对腐败。反腐败宜从立与防两个方面入手，加强制度建设。     

非线性切换系统的镇定与非光滑控制Lyapunov函数

对构建一般非线性切换系统的切换律进行了讨论,由系统的渐近能控性出发,在一定的假设前提下,得出了存在依赖于状态的切换律,使闭环系统在广义的意义下渐近稳定的结论.结论推广到了仿射控制系统,给出了使系统镇定的一个充分条件.