共查询到19条相似文献,搜索用时 62 毫秒
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基于LMI的Delta域内的H∞状态反馈设计 总被引:1,自引:0,他引:1
利用LMI方法讨论和研究Delta算子描述下的线性定常系统的H∞控制问题,并给出了连续系统、Z变换所得到的离散系统和Delta算子所描述的系统三的H∞控制问题的比较。结果表明,Derlta算子所描述的系统的设计方法更适合于离散系统,尤其适合于小采样周期系统。 相似文献
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研究一类执行器幅值与速率饱和的不确定非线性系统静态抗饱和控制问题.采用线性微分包含的方法处理系统模型中的非线性项.给出了抗饱和补偿器设计方法,该方法能同时保证闭环鲁棒稳定及鲁棒性能.给出了此类非线性系统代数环良定的充要条件,从而将抗饱和补偿器设计问题转化为线性矩阵不等式约束的凸优化问题.最后通过仿真算例说明了所提出方法的有效性. 相似文献
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针对一类饱和非线性系统研究抗饱和控制器综合问题. 基于线性分式表示技术(LFR), 该类非线性系统可转化为带有满足扇形区间不等式条件的非线性函数及额外线性分式约束的饱和线性系统. 基于二次Lyapunov 方程并利用广义扇形区间不等式条件处理饱和非线性项, 提出了基于LMI 条件的非线性抗饱和控制器综合方法. 数值仿真验证了所提出方法的有效性.
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讨论了一类由若干个连续时间线性系统组成的强耦合的空间关联系统的分布式控制器设计问题. 该类系统在实际中有广泛应用, 如高速路车辆控制系统, 电网系统及计算机网络系统. 提出了混合Lyapunov判据和混合有界实引理对该类大系统的稳定性和H无穷性能进行了分析. 给出了基于LMI的分布式动态输出反馈控制器设计方法, 从而保证了闭环大系统的稳定性和H无穷性能. 在控制器的求解过程中, 引入了更为高效和计算可靠性更高的变量替换法进行求解, 试验结果表明, 一些通过消元法无解的问题借助变量替换法可以得到很好的解决. 最后, 通过具体实例说明了分布式控制系统在动态性能指标上优于分散控制系统. 相似文献
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Sandip Ghosh Sarit K. Das Goshaidas Ray 《International Journal of Control, Automation and Systems》2009,7(2):311-317
Adaptive stabilization of a class of linear systems with matched and unmatched uncertainties is considered in this paper.
The proposed controller indeed stabilizes the uncertain system for any positive values of its non-adaptive gain that may be
tuned to enhance dynamic response of system. The performance of uncertain system along with the Algebraic Riccati Equation
that arises from the adaptive stabilizing controller is now formulated as a multi-objective Linear Matrix Inequality optimization
problem. The decay rate and a factor governing the ultimate bound of the system states are considered to characterize the
closed loop system performance. Finally, the effectiveness of the proposed controller is illustrated via stabilizing a mass-spring
system.
Recommended by Editorial Board member Gang Tao under the direction of Editor Young Il Lee. The authors would like to thank
the reviewers for their valuable comments and suggestions that have improved the quality of this paper.
Sandip Ghosh received the B.E. in Electrical Engineering from Bengal Engineering College (D.U.), Howrah, and Master in Control System
Engineering from Jadavpur University, Kolkata, India, in 1999 and 2003 respectively. Presently he is pursuing the Ph.D. degree
at Indian Institute of Technology, Kharagpur, India. His research interests include adaptive control, robust control and control
of time-delay systems.
Sarit K. Das is a Professor of Electrical Engineering Department, Indian Institute of Technology, Kharagpur, India. He received the Ph.D.
degree in 1985 from the same department. His research interests include design of periodic controller, decoupling of multivariable
systems, modeling and robust control of complex systems.
Goshaidas Ray is a Professor of Electrical Engineering Department, Indian Institute of Technology, Kharagpur, India. He received the Ph.D.
degree in 1982 from Indian Institute of Technology Delhi, India. His research interests include modeling, estimation, model-based
control, intelligent control, robotic systems and distributed control systems. 相似文献