共查询到17条相似文献,搜索用时 171 毫秒
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本文对分布迭代随机大系统给出了定性分析,对时不变性线,时变线性和非线性迭代随机大系统建立了关联均方收敛性判据,在所有孤立子系统都收敛的情形,只需选择子系统中适当的乘子,迭代随机大系统就能对任意互连项和在结构扰动下保持均方收敛性。 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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本文研究具有滞后耦合特性的时不变线性Ito随机大系统的稳定性,得到了大系统平衡态滞后无关的均方渐近稳定性代数判据。文中所考虑的子系统是随机子系统,对它们的建设正好是它们的均方渐近稳定的充要条件。另外,文中采用的Lyapunov泛函是确定型的Lyapunov泛函。 相似文献
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本文讨论了一种大系统实时随机最优控制算法--奇异摄动型卡尔曼滤波的设计问题.
建立了线性定常离散互联电力系统的奇异摄动模型.奇异摄动型卡尔曼滤波每循环一步所需
要的计算时间和内存量会大大减小.文中还考虑了控制增益的计算问题.通过对华北互联电
力系统LFC的仿真证明了其控制效果和奇异摄动型卡尔曼滤波算法的有效性. 相似文献
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本文中利用一般系统理论讨论了分散、集中和协调系统的大系统模型。对于一种简化了的案例给出了为确定最优策略的方程组。对多级多段随机控制系统也进行了讨论。结合中国当前的具体情况给出了一个数字例子。 相似文献
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Classical continuum theories are formulated based on the assumption of large scale separation. For scale-coupling problems involving uncertainties, novel multiscale methods are desired. In this study, by employing the generalized variational principles, a Green-function-based multiscale method is formulated to decompose a boundary value problem with random microstructure into a slow scale deterministic problem and a fast scale stochastic one. The slow scale problem corresponds to common engineering practices by smearing out fine-scale microstructures. The fast scale problem evaluates fluctuations due to random microstructures, which is important for scale-coupling systems and particularly failure problems. Two numerical examples are provided at the end. 相似文献
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In this paper, we investigate the stabilization control design problem of nonlinear stochastic SISO systems in strict-feedback form. By introducing a novel reduced-order observer, an output-feedback-based control is constructively designed, which renders the closed-loop system asymptotically stable in the large when the nonlinearities and stochastic disturbance equal zero at the equilibrium point of the open-loop system, and bounded in probability, otherwise. Besides, the obtained controller preserves the equilibrium point of the open-loop nonlinear system. 相似文献