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| 1 | 广义Hamilton多机电力系统的广域时滞阻尼控制显示文摘随着跨区送电量的需求增加,大量功率需要进行远距离传输,因而抑制区域间的功率振荡仅靠局部反馈信号设计的控制器已难以保证整个系统的稳定运行。因此,含有时滞影响的广域控制器的分析和设计是近年来互联电网研究的热点之一。基于Hamilton系统理论,建立对应的广域测量电力系统的非线性时滞广义Hamilton模型,并以此模型为基础,给出相应的Lyapunov-Krasovskii泛函并推导出以矩阵不等式为形式的时滞依赖稳定性判据,注意到控制输入含有时滞信号的影响,设计出相应的广域阻尼控制器(wide-area damping controller,WADC),实现了含有时滞的广域反馈控制,并计算出能使闭环电力系统稳定的时滞裕度,权衡WADC的阻尼性能与时滞裕度之间的关系,从而给出对应的WADC控制参数。最后以16机68节点系统为例,用时域仿真的结果来说明所提时滞控制方法的有效性。 | 古丽扎提.海拉提 王杰 | 2014 | 中国电机工程学报2014，34，34： | 18 |
| 2 | 一类执行器饱和非线性Hamilton网络控制系统H_∞控制器设计显示文摘研究了一类执行器饱和非线性Hamilton网络控制系统H∞状态反馈控制器设计问题。该类网络控制系统中存在不确定的网络时延及丢包,待设计的控制器受到饱和因素的约束,且系统的外部扰动范数有界但统计特性未知。结合Hamilton系统结构特性,当网络时延和连续丢包有界时,将网络时延和连续丢包转化为时变时滞,应用Lyapunov-Krasovskii稳定性理论来分析和设计H∞控制器,使其满足H∞性能指标,控制器中的未知参数通过求解不等式来确定。算例分析与仿真验证了方法的有效性。 | 洪晓芳 王玉振 魏爱荣 | 2014 | 山东大学学报(工学版)2014，44，1： | 3 |
| 3 | 具有大时滞的非线性定常大系统的无条件稳定性显示文摘应用Lyapunov函数分解法(即标量和的Lyapunov函数法),结合微分方程与微分差分方程的等价性的方法(即分解等价法),研究了具有大时滞的非线性定常大系统的无条件稳定性,得到了该系统为无条件稳定的充分性判据。本文对时滞项的研究不同于以往的小时滞,找到了使含大时滞项的系统为无条件稳定的途径,从而为这类问题的研究给出了一种新方法。 | 韩月乔 高存臣 | 2016 | 中国海洋大学学报(自然科学版)2016，46，3： | 2 |
| 4 | Robust H_2/H_∞ global linearization filter design for nonlinear stochastic time-varying delay systems显示文摘One can design a robust H_∞ filter for a general nonlinear stochastic system with external disturbance by solving a second-order nonlinear stochastic partial Hamilton-Jacobi inequality(HJI), which is difficult to be solved. In this paper, the robust mixed H_2/H_∞ globally linearized filter design problem is investigated for a general nonlinear stochastic time-varying delay system with external disturbance, where the state is governed by a stochastic It-type equation. Based on a globally linearized model, a stochastic bounded real lemma is established by the Lyapunov–Krasovskii functional theory, and the robust H_∞ globally linearized filter is designed by solving the simultaneous linear matrix inequalities instead of solving an HJI. For a given attenuation level,the H_2 globally linearized filtering problem with the worst case disturbance in the H_∞ filter case is known as the mixed H_2/H_∞ globally linearized filtering problem, which can be formulated as a linear programming problem with simultaneous LMI constraints. Therefore, this method is applicable for state estimation in nonlinear stochastic time-varying delay systems with unknown exogenous disturbance when state variables are unavailable.A simulation example is provided to illustrate the effectiveness of the proposed method. | Weihua MAO Feiqi DENG Anhua WAN | 2016 | Science China(Information Sciences)2016，59，3： | 1 |
| 5 | NEW DELAY-DEPENDENT STABILITY CRITERIA AND ROBUST CONTROL OF NONLINEAR TIME-DELAY SYSTEMS显示文摘This paper investigates the stability analysis and H_∞ control for a class of nonlinear timedelay systems,and proposes a number of new results.Firstly,an equivalent form is given for this class of systems by means of coordinate transformation and orthogonal decomposition of vector fields.Then,based on the equivalent form,some delay-dependent results are derived for the stability analysis of the systems by constructing a novel Lyapunov functional.Thirdly,the authors use the equivalent form and the obtained stability results to investigate the H_∞ control problem for a class of nonhnear time-delay control systems,and present a control design procedure.Finally,an illustrative example is given to show the effectiveness of the results obtained in this paper.It is shown that the main results of this paper are easier to check than some existing ones,and have less conservatism. | YANG Renming WANG Yuzhen | 2014 | Journal of Systems Science & Complexity2014，27，5： | 1 |
| 6 | 基于观察器的二次调节速度系统控制性能仿真研究显示文摘由于二次调节静液传动系统在工作过程中受死区、滞环、库伦摩擦等因素的影响,属于典型的非线性系统,采用常规控制,很难取得令人满意的效果。针对二次调节系统的非线性特征,在已有成果的基础上,应用Hamiltonian泛函方法,构建了二次调节静液传动系统的Hamiltonian形式,设计了基于观察器的鲁棒控制器,应用到二次调节静液传动速度控制系统中,并进行了仿真研究,取得了良好的控制性能。仿真结果表明:系统的动态特性明显得到了改善,具有较强的抗干扰能力和良好的鲁棒性。 | 臧发业 杨仁明 | 2019 | 机床与液压2019，47，19： | 1 |
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