共查询到18条相似文献,搜索用时 117 毫秒
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针对存在传输滞后的线性离散系统的状态反馈镇定问题,给出了系统可镇定的一个内部限制条件.为克服这一限制条件,提出了两种方法:一种是充分利用滞后状态的信息,另一种是设计带有递推动态的状态反馈控制器.研究结果表明,若系统在没有传输滞后时能通过状态反馈被镇定,则存在传输滞后时一定也能通过设计新的控制器使系统被镇定. 相似文献
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建立了一类多组多滞后区间时变非线性控制大系统的结构概念,采用李雅普诺夫函数鲁棒镇定等价法,给出了无滞后和扰动结构参数线性时变控制大系统的关联镇定,它蕴含了具有扰动结构参数的多组多滞后区间时变非线性关联控制大系统的结构与关联鲁棒镇定,同时给出了扰动参数与滞后非线性项界限的估计公式。 相似文献
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本文通过利用李雅普诺夫函数和李雅普诺夫矩阵方程的性质,对具有非线性滞后关联的一类随机大系统建立了分散鲁棒镇定的判据,所得闭环随机大系统的和稳定性不依赖于任意实数滞后,并对不确定系数矩阵和随机扰动强度具有鲁棒性。 相似文献
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一类非线性离散切换系统基于观测器的指数镇定 总被引:1,自引:0,他引:1
对一类离散非线性切换系统, 考虑了基于观测器的指数镇定问题. 借助微分中值定理(DMVT), 将非线性切换系统转化为线性参数(LPV)切换系统. 当状态变量不完全可获得时, 基于多Lyapunov函数方法, 给出系统在基于观测器的输出反馈控制器下指数镇定的充分条件. 所设计的滞后切换规则能够避免产生滑动模态. 并且将结果推广到系统方程含有不确定性的情况. 最后, 仿真例子说明了设计方法的有效性. 相似文献
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本语文针对一般的滞后动态系统建立了广义指数稳定性的充分和必要条件,并由所建立的充要条件得出了系统过渡过程的时变指数衰减估计,作为所建结果的应用,基于矩阵工给出了一类滞后动态系统过渡过程的相应指数衰减估计,本文揭示了所建衰减估计可好于那些仅基于充分稳定性条件所得的估计。 相似文献
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Hamadi Jerbi 《Systems & Control Letters》2001,42(4):471
In this paper, we consider some new classes of bilinear systems. We give necessary and sufficient conditions for the asymptotic stabilization by using homogeneous feedbacks. 相似文献
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In this paper, we study the stabilization of linear critically unstable systems subject to input saturation and multiple unknown input delays. We find tight upper bounds for delays which are inversely proportional to the maximal magnitude of open-loop eigenvalues on the imaginary axis. For delays satisfying these upper bounds, linear low-gain state and finite dimensional dynamic measurement feedbacks are constructed to solve the semi-global stabilization problem. The effectiveness of the proposed design is illustrated by an example. 相似文献
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《Automatic Control, IEEE Transactions on》2006,51(9):1527-1531
In the present study, a sliding-mode control design method based on the finite spectrum assignment procedure is proposed. The finite spectrum assignment for retarded nonlinear systems can transform retarded nonlinear systems into delay-free linear systems via a variable transformation and a feedback, which contain the past values of the state. This method can be considered to be an extension of both the finite spectrum assignment for retarded linear systems with controllability over polynomial rings of the delay operator and the exact linearization for finite dimensional nonlinear systems. The proposed method is to design a sliding surface via the variable transformation used in the finite spectrum assignment and to derive a switching feedback law. The obtained surface contains not only the current values of the state variables but also the past values of the state variables in the original coordinates. The effectiveness of the proposed method is tested by an illustrative example. 相似文献
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S.
elikovský 《Systems & Control Letters》1993,21(6):503-510
The problem of stabilizing the single-input homogeneous bilinear systems is considered. A special class of these systems is considered: the matrix of the linear (i.e., control independent) term of the right-hand side is semitable while the matrix of the bilinear term is skew-symmetric. Two types of stabilization are investigated: constant feedback global asymptotic stabilization and practical stabilization by a family of the linear feedbacks. It will be shown for the planar case that the above system is always practically stabilizable by a family of the linear feedbacks. For n = 3, the solution of both stabilization problems depends on the mutual position of the expanding direction of the linear part and the direction of the infinitesimal rotation defined by the bilinear term. 相似文献