The problem of observer-based robust H-infinity control is addressed for a class of linear discrete-time switched systems with time-varying norm-bounded uncertainties by using switched Lyapunov function method. None o...The problem of observer-based robust H-infinity control is addressed for a class of linear discrete-time switched systems with time-varying norm-bounded uncertainties by using switched Lyapunov function method. None of the individual subsystems is assumed to be robustly H-infinity solvable. A novel switched Lypunov function matrix with diagonal-block form is devised to overcome the difficulties in designing switching laws. For robust H-infinity stability analysis, two linear-matrix-inequality-based sufficient conditions are derived by only using the smallest region function strategy if some parameters are preselected. Then, the robust H-infinity control synthesis is studied using a switching state feedback and an observer-based switching dynamical output feedback. All the switching laws are simultaneously constructively designed. Finally, a simulation example is given to illustrate the validity of the results.展开更多
In this paper, observer-based static output feedback control problem for discrete-time uncertain switched systems is investigated under an arbitrary switching rule. The main method used in this note is combining switc...In this paper, observer-based static output feedback control problem for discrete-time uncertain switched systems is investigated under an arbitrary switching rule. The main method used in this note is combining switched Lyapunov function （SLF） method with Finsler＇s Lemma. Based on linear matrix inequality （LMI） a less conservative stability condition is established and this condition allows extra degree of freedom for stability analysis. Finally, a simulation example is given to illustrate the efficiency of the result.展开更多
考虑到各种开关在配电网故障时呈现的开断特性不同,提出基于开关特性的配电网可靠性等效叠加评估算法。该算法在网络分区及区域最小路矩阵形成过程中将元件可靠性指标等效叠加于开关,获得开关等效可靠性矩阵;以开关为分析对象,根据区域...考虑到各种开关在配电网故障时呈现的开断特性不同,提出基于开关特性的配电网可靠性等效叠加评估算法。该算法在网络分区及区域最小路矩阵形成过程中将元件可靠性指标等效叠加于开关,获得开关等效可靠性矩阵;以开关为分析对象,根据区域最小路矩阵和开关等效可靠性矩阵计算负荷点可靠性指标。IEEE RBTS Bus 2、4、6测试系统计算结果表明所提方法能够避免冗余分析、减少计算量,有力提升了计算速度和效率。展开更多
基金This work was supported by the National Natural Science Foundation of China (No. 60274009, 60574013)
文摘The problem of observer-based robust H-infinity control is addressed for a class of linear discrete-time switched systems with time-varying norm-bounded uncertainties by using switched Lyapunov function method. None of the individual subsystems is assumed to be robustly H-infinity solvable. A novel switched Lypunov function matrix with diagonal-block form is devised to overcome the difficulties in designing switching laws. For robust H-infinity stability analysis, two linear-matrix-inequality-based sufficient conditions are derived by only using the smallest region function strategy if some parameters are preselected. Then, the robust H-infinity control synthesis is studied using a switching state feedback and an observer-based switching dynamical output feedback. All the switching laws are simultaneously constructively designed. Finally, a simulation example is given to illustrate the validity of the results.
基金This work was supported by Doctorate Foundation of Shenyang Normal University of China (No. 054-554405-01)
文摘In this paper, observer-based static output feedback control problem for discrete-time uncertain switched systems is investigated under an arbitrary switching rule. The main method used in this note is combining switched Lyapunov function （SLF） method with Finsler＇s Lemma. Based on linear matrix inequality （LMI） a less conservative stability condition is established and this condition allows extra degree of freedom for stability analysis. Finally, a simulation example is given to illustrate the efficiency of the result.
文摘考虑到各种开关在配电网故障时呈现的开断特性不同,提出基于开关特性的配电网可靠性等效叠加评估算法。该算法在网络分区及区域最小路矩阵形成过程中将元件可靠性指标等效叠加于开关,获得开关等效可靠性矩阵;以开关为分析对象,根据区域最小路矩阵和开关等效可靠性矩阵计算负荷点可靠性指标。IEEE RBTS Bus 2、4、6测试系统计算结果表明所提方法能够避免冗余分析、减少计算量,有力提升了计算速度和效率。
