共查询到16条相似文献,搜索用时 62 毫秒
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一类不确定时滞系统的输出反馈镇定 总被引:1,自引:0,他引:1
对于控制通道中存在时滞的不确定时滞系统,讨论了时滞独立的输出反馈镇定律的设计问题,利用线性矩阵不等式方法给出了鲁棒镇定律的存在条件及镇定律存在时相应的镇定律设计方法,研究结果表明,针对控制通道中存在时滞的一类不确定系统,在一定条件下可以利用线性矩阵不等式方法设计输出反馈镇定律。文中给出了算例以说明方法的应用。 相似文献
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针对一类不确定非线性连续系统,用模糊系统对未知函数进行逼近的基础上,利用Lyapunov稳定性理论,提出了一种新的自适应模糊跟踪控制算法,此算法的特点是,无论取多少条模糊系统的规则,自适应学习的参数只有一个,便于实现,而且还能确保闭环系统渐近稳定,并使系统的跟踪误差为零,仿真研究表明,所提出的算法是有效的。 相似文献
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一类不确定非线性系统的自适应模糊滑模控制 总被引:2,自引:0,他引:2
针对一类不确定非线性系统自适应模糊控制中,为了保证系统稳定性而附加监督控制问题,根据滑模控制原理并利用模糊系统的逼近能力,提出了一种Ⅰ型间接自适应模糊滑模控制方法。该方法取消了监督控制,用滑模控制器增加了逼近误差的自适应补偿,李雅普诺夫稳定性理论分析证明,控制系统全局稳定且跟踪误差收敛到零。将这种控制器应用到过程控制的典型对象液位控制中,仿真结果表明了该控制器的有效性和可行性。 相似文献
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基于最优控制方法的一类不确定非线性系统的鲁棒控制 总被引:1,自引:0,他引:1
研究了一类不确定非线性系统的鲁棒控制问题,目的是在未满足不确定性匹配条件的情况下设计稳定系统的状态反馈。通过将设计鲁棒控制器问题转化为设计最优控制器问题以补偿系统中的不确定性,说明了最优控制的解即为鲁棒控制的解,并通过仿真说明这种设计方法的效果。 相似文献
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为了研究带二次不确定参数线性系统的鲁棒够稳定和鲁棒镇定问题,考虑了D域为复平面左半平面的圆盘域,并采用线性矩阵不等式(LMI)方法,证明该系统鲁棒D稳定的充分条件等价于一个线性矩阵不等式的可解性问题,利用该LMI的可行解可求得了系统鲁棒镇定状态反馈控制器。通过实例说明了该方法的有效性。 相似文献
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Habib Ayadi 《International Journal of Adaptive Control and Signal Processing》2019,33(1):212-224
This paper investigates the problem of global output feedback stabilization for a class of uncertain nonlinear time‐delay systems with unknown time delay in the states and the input in which both the input and the output are logarithmically quantized. The nonlinear functions of such systems are not completely known and satisfying certain bounded condition depending on the unmeasured states and the input. We construct a new dynamic high‐gain observer where only an output quantization instead of the output is available for measurement to dominate the unknown nonlinear functions view as external disturbances. A scaled change of coordinates and an appropriate Lyapunov‐Krasovskii functional are derived to achieve the global stabilization in the sense that all the states of such systems are defined, bounded in the maximal interval [0, +∞), and converge to the zero equilibrium. A numerical example is provided to illustrate the result. 相似文献
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两类不确定非线性系统的最优控制 总被引:6,自引:0,他引:6
通过非线性系统的部分线性化方法,将两类各自满足相应条件的不确定非线性系统的最优控制问题分别变换成参数确定和参数不确定线性系统的二次型最优调节器问题,从而求得原最优控制问题的闭环解析解。两个设计例子及其仿真结果验证了本文方法的正确性。 相似文献
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Mali Xing Feiqi Deng 《International Journal of Adaptive Control and Signal Processing》2019,33(10):1506-1523
This paper deals with the cooperative tracking problem of nonlinear multiagent systems. Compared with the existing works, both the uncertainties in model and switching topology are considered. Two control laws, the adaptive distributed controller based on state information and the adaptive distributed controller based on output information, are proposed using the neural networks. The advantage of the proposed controller is that we no longer require the exact knowledge of follower agents' parameters and the precise switching signal of communication topology by taking advantages of neural networks approximation and the property of transition probabilities. It is proved that all followers can track the leader with permitted bounded errors under the proposed controller. An illustration is given to testify the efficacy of the proposed approach. 相似文献
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Adaptive output feedback regulation for a class of uncertain feedforward nonlinear systems 下载免费PDF全文
Abdallah Benabdallah Mohsen Belfeki 《International Journal of Adaptive Control and Signal Processing》2017,31(5):695-709
In this paper, we solve the problem of global output feedback regulation for uncertain feedforward nonlinear systems. The nonlinear functions, in the class of systems under consideration, are assumed to be dominated by an input‐output function multiplied by an unknown parameter and a linear unmeasured states. Contrarily to the previous works, the interval of the output's power has been expanded from to . A numerical example is provided to illustrate the effectiveness of the proposed design scheme. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献