共查询到19条相似文献,搜索用时 765 毫秒
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利用Lyapunov泛函数分析方法研究时滞广义分散控制系统,给出关联矩阵在某种解下的镇定条件及反馈控制器的设计方法,及具有相同时滞的广义分散系统,提供了镇定控制器的设计以保证闭环系统是渐近稳定的。 相似文献
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针对一类同时具有变时滞和连续分布时滞的分布参数系统的状态反馈控制问题进行了研究,通过选择适当的Lyapunov-Krasovskii函数,采用线性矩阵不等式(LMI)方法,得到了变时滞闭环系统渐近稳定的一个充分条件.设计了无记忆的状态反馈控制器,使得在一个正定矩阵存在的条件下,闭环系统是可镇定的,从而得到了常时滞分布参数系统可镇定的一个推论.最后,通过一个数值仿真例子说明了所给出设计方法的可行性和有效性. 相似文献
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一类不确定广义时滞系统的保性能控制 总被引:1,自引:1,他引:0
研究同时具有状态时滞和控制输入时滞的一类不确定广义系统的保性能控制问题。对于给定的性能指标及所容许的不确定和时滞,设计一个无记忆状态反馈控制律,使得闭环系统是渐近稳定的,闭环系统的性能函数值不大于给定的一个数。利用Lyapunov稳定性定理和线性矩阵不等式工具,得到广义系统的状态反馈保性能鲁棒控制器存在的充分条件和设计方法,并给出相应性能指标上界。仿真示例表明该方法的有效性。 相似文献
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针对一类具有非线性扰动的不确定广义时滞系统,研究了鲁棒最优H∞控制问题.利用矩阵不等式和引入自由矩阵的方法,得到闭环系统正则、无脉冲、渐近稳定的且具有H∞范数有界的时滞相关充分条件.基于相应的线性矩阵不等式可行解,给出广义系统的H∞控制律,并且给出的数值仿真例子说明了方法的有效性。 相似文献
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时滞不确定广义系统的鲁棒H∞容错控制 总被引:1,自引:0,他引:1
研究了具有状态时滞和参数不确定性的广义系统的鲁棒H∞容错控制问题,就执行器故障情形,基于广义Ricatti不等式,给出了故障发生时闭环系统仍保持渐近稳定的充分条件和控制器的设计方法,且状态反馈控制器可通过求解LMI得到.数值例子验证了设计方法的有效性. 相似文献
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不确定切换奇异时滞系统鲁棒指数容许性分析 总被引:2,自引:0,他引:2
讨论一类连续时间不确定切换奇异区间时变时滞系统的鲁棒指数容许性问题. 通过定义衰减率依赖李亚普诺夫函数并利用平均驻留时间法, 给出一个时滞区间依赖充分条件保证标称系统正则、无脉冲且均方指数稳定. 同时该准则也被推广至不确定系统. 本文获得的结论为连续时间切换奇异时滞系统的基本问题提供了一个解, 即识别切换信号使得切换奇异时滞系统正则、无脉冲且均方指数稳定. 数值例子说明本文结果的有效性. 相似文献
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The problem of robust H-infinity control for a class of uncertain singular time-delay systems is studied in this paper. A new approach is proposed to describe the relationship between slow and fast subsystems of singular time- delay systems, based on which, a sufficient condition is presented for a singular time-delay system to be regular, impulse free and stable with an H-infinity performance. The robust H-infinity control problem is solved and an explicit expression of the desired state-feedback control law is also given. The obtained results are formulated in terms of strict linear matrix inequalities (LMIs) involving no decomposition of system matrices. A numerical example is given to show the effectiveness of the proposed method. 相似文献
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An LMI approach to robust H-infinity control for uncertain singular time-delay systems 总被引:1,自引:1,他引:1
The problem of robust H-infinity control for a class of uncertain singular time-delay systems is studied in this paper. A new approach is proposed to describe the relationship between slow and fast subsystems of singular time- delay systems, based on which, a sufficient condition is presented for a singular time-delay system to be regular, impulse free and stable with an H-infinity performance. The robust H-infinity control problem is solved and an explicit expression of the desired state-feedback control law is also given. The obtained results are formulated in terms of strict linear matrix inequalities (LMIs) involving no decomposition of system matrices. A numerical example is given to show the effectiveness of the proposed method. 相似文献
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In this paper the problem of sliding mode control (SMC) with passivity of a class of uncertain nonlinear singular time-delay systems is studied. An integral-type switching surface function is designed by taking the singular matrix into account, thus the resulting sliding mode dynamics is a full-order uncertain singular time-delay system. By introducing some slack matrices, a delay-dependent sufficient condition is proposed in terms of linear matrix inequality (LMI), which guarantees the sliding mode dynamics to be generalized quadratically stable and robustly passive. The passification solvability condition is then established. Moreover, a SMC law and an adaptive SMC law are synthesized to drive the system trajectories onto the predefined switching surface in a finite time. Finally, a numerical example is provided to illustrate the effectiveness of the proposed theory. 相似文献
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一类非线性不确定时滞系统的鲁棒镇定 总被引:13,自引:0,他引:13
基于Lyapunov稳定性理论,了一类具有状态非线性不确定线性时滞系统的鲁棒稳定的一个充分条件。通过求解一个代数Riccati方程即可获得鲁棒稳定控制器,并且该控制器不依赖于系统的时滞。具体算例说明了该方法有效性。 相似文献
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利用一种奇异系统方法讨论了时滞系统的输出反馈滑模控制问题. 时滞系统的非线性项满足范数有界约束.首先,将滑动模态与线性切换面作为一个奇异时滞系统,基于奇异时滞系统的稳定性理论, 给出滑动模态稳定及切换面存在的线性矩阵不等式(Linear matrix inequality, LMI)充分条件.然后,给出使得系统闭环渐近稳定的静态输出反馈滑模控制器的设计方法,此控制器保证闭环 系统有限时间到达切换面.最后,用数值算例验证本文方法的有效性和正确性. 相似文献
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Pingjing Yang Fengman Yang Debin Kong Lin Wang 《International journal of systems science》2018,49(8):1627-1640
This paper deals with passivity control for uncertain singular discrete T–S (Takagi-Sugeno) fuzzy time-delay systems subject to actuator saturation. Primarily, a sufficient condition is derived which guarantees that the uncertain singular discrete T–S (Linear matrix inequality) constraints is formulated to estimate the domain of attraction for the discrete T–S closed-loop system. At last, we show the applicability and superiority of obtained theoretical results through three simulations. 相似文献