STABILITY OF SINGULAR UNCERTAIN DIFFERENTIAL SYSTEMS WITH MULTIPLE TIME-VARYING DELAYS

The stability of singular uncertain differential systems with multiple time-varying delays is discussed, and many results on this are obtained.

DELAY-DEPENDENT ROBUST STABILITY CRITERIA FOR UNCERTAIN SINGULAR NEUTRAL DIFFERENTIAL SYSTEMS WITH TIME-VARYING AND DISTRIBUTED DELAYS

The problem of delay-dependent robust stability for uncertain linear singular neutral systems with time-varying and distributed delays is investigated. The uncertainties under consideration are norm bounded,and possibly time varying. Some new stability criteria,which are simpler and less conservative than existing results,are derived based on a new class of Lyapunov-Krasovskii functionals combined with the descriptor model transformation and the decomposition technique of coeffcient matrix and formulated in...

广义不确定周期时变系统的鲁棒非脆弱控制

研究了状态矩阵具有不确定性的广义周期时变系统的鲁棒非脆弱控制问题.利用线性矩阵不等式(LMI)方法,分别对控制器增益具有加法式摄动和乘法式摄动两种情形加以讨论,而非脆弱控制器的设计可以通过求解一组线性矩阵不等式得到.最后,数值例子说明了所给方法的有效性.

一类不确定奇异周期时变系统的鲁棒非脆弱_∞控制

对状态矩阵具有不确定性的奇异周期时变系统的鲁棒非脆弱H∞控制问题进行了研究。提出参数不确定性奇异周期时变系统广义可镇定和广义二次可镇定且具有H∞性能指标的概念,利用线性矩阵不等式方法,得到了一类参数不确定性奇异周期时变系统广义二次可镇定且具有H∞性能指标γ的一个充分条件,分别给出了相应的控制器增益具有加法式摄动和乘法式摄动的鲁棒非脆弱H∞状态反馈控制律的设计方法,所得的状态反馈控制律使得闭环系统正则、稳定、无脉冲,而且具有给定的H∞性能指标。最后,通过数值算例说明了该方法的有效性。