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非线性控制系统镇定的若干进展 总被引:11,自引:0,他引:11
综述了最近在局部渐近镇定,全局渐近镇定,半全局渐近镇定,实用镇定,有界镇定和带状态检测器镇定等方面的进展情况,并给予简短的评述。 相似文献
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线性系统时滞反馈镇定研究 总被引:2,自引:1,他引:1
本文研究线性系统状态反馈控制存在延迟时的镇定问题.对于一般情形下的时滞镇定问
题的判定,提出了一个充分条件;对于具有不稳定单根的单输入控制系统,提出了时滞镇定一
个构造性的充分条件;并讨论了时滞反馈镇定控制器的实现问题. 相似文献
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本文首先基于逆LQG方法得到了静态输出反馈可镇定的一种充要条件,并进一步给出了固定输出反馈可镇定的充要条件和控制器的设计方法,基于此给了一种最小阶镇定控制器的设计方法,这些条件的形式简单,判断其可镇定性和设计镇定控制器仅需解几个相应的矩阵不等式。 相似文献
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给出仿射非线性系统为双曲极小相位的一个必要条件,并讨论了一类非线性对称大系统的镇定问题,将该大系统的镇定归结为两个你阶系统的镇定。 相似文献
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鲁棒镇定区间系统族的一个充分条件 总被引:3,自引:0,他引:3
讨论了区间系统族的鲁棒镇定问题,给出存在控制器鲁棒镇定区间系统族的一个充分条
件,并且当这个条件成立时,得到了鲁棒镇定区间系统族的控制器的参数化公式. 相似文献
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This paper addresses local stabilization of a semilinear parabolic system by boundary control. Under a certain assumption on the nonlinearity of the parabolic equation, a linear boundary feedback control law is applied to control the semilinear system. Based on the operator theories and relations of different norms, locally exponential stabilization of the closed loop system is established. Simulations support the established stability result. 相似文献
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The problem of the delay‐dependant robust stability and stabilization is dealt with for a class of Lur'e singular system with state time‐delays in this paper. The new concept of generalized robust quadratic stability and generalized robust quadratic stabilization is presented. Furthermore, the sufficient condition of the robust stability and stabilization is also proposed based on linear matrix inequalities. The synthesis problem addressed is to design a memoryless state feedback control law such that the resulting closed‐loop system is regular, impulse free and asymptotically stable for all admissible uncertainties. Copyright © 2008 John Wiley and Sons Asia Pte Ltd and Chinese Automatic Control Society 相似文献
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多组时滞大型控制系统的镇定 总被引:2,自引:0,他引:2
给出了由无时滞线性定常闭孤立控制子系统的渐近稳定性推出多组时滞线性定常闭环大型控制系统的渐近稳定性的充分条件,并说明了所得结果可以推广到多组时滞线性时变闭环大型控制系统与多组时滞线中立型定常(或时变)闭环大型控制系统,所得结果改进了前人的结果,通过参数镇定域的比较知,可使参数镇定域扩大为原来的6倍。 相似文献
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矩阵的半张量积是将逻辑变量转化为向量研究的主要工具.本文利用半张量积把逻辑控制系统表示为离散时间仿射线性系统,在逻辑系统的状态空间框架下研究了以布尔控制网络为代表的逻辑动态系统的输出稳定与镇定.首先给出布尔网络输出稳定的定义,研究了布尔网络输出稳定的充要条件;其次讨论了布尔控制网络的输出镇定,分别得到了布尔控制网络由常值输入变量、自由控制序列、状态反馈控制序列输出镇定的条件.本文讨论的系统输出稳定与镇定是(部分)变量稳定与镇定的推广. 相似文献
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The data packet dropouts phenomenon is usually inevitable when information transmitted among communication networks. In this paper, the robust stabilization problem for uncertain networked control systems with data packet dropouts is studied. First, an uncertain discrete-time switching system model is presented to describe these networked control systems. The stability equivalence is then proved between this switching system and an uncertain impulsive difference system. Moreover, a sufficient condition is obtained for the asymptotical stability of the nonlinear impulsive difference system. From this condition the robust stabilization problem is dealt with for the uncertain impulsive system. Main results are given in linear matrix inequalities. Finally a numerical example is given to illustrate the theoretical results. 相似文献
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《自动化学报》2005,(3)
The data packet dropouts phenomenon is usually inevitable when information transmit- ted among communication networks.In this paper,the robust stabilization problem for uncertain networked control systems with data packet dropouts is studied.First,an uncertain discrete-time switching system model is presented to describe these networked control systems.The stability equiv- alence is then proved between this switching system and an uncertain impulsive difference system. Moreover,a sufficient condition is obtained for the asymptotical stability of the nonlinear impulsive difference system.From this condition the robust stabilization problem is dealt with for the uncertain impulsive system.Main results are given in linear matrix inequalities.Finally a numerical example is given to illustrate the theoretical results. 相似文献
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Lotfi Benziane Abdelaziz Benallegue Yacine Chitour Abdelhamid Tayebi 《国际强度与非线性控制杂志
》2016,26(11):2478-2493
》2016,26(11):2478-2493
This paper deals with the attitude stabilization problem of a rigid body, where neither the angular velocity nor the attitude is used in the feedback; only body‐referenced vector measurements are needed. The proposed control scheme is based on an angular velocity observer‐like system relying solely on vector measurements. The proposed controller ensures almost global asymptotic stability and provides some interesting performance properties through an appropriate tuning of the control gains. The performance and effectiveness of the proposed control scheme are illustrated via simulation results where the control gains are adjusted using a nonlinear optimization. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献
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针对船舶航向/舵减横摇控制系统的特点,提出了一种新的设计方案.对舵减横摇控制回路,基于开环增益成形的思想,通过指定闭环灵敏度函数的幅频特性形状,得到相应的舵减横摇控制器.在设计过程中不但考虑了对象的非最小相位特性,还分析了Bode积分定理对性能的约束条件,在系统的性能和控制输出之间进行了折衷,给出了一组优化设计结果.对航向控制回路,应用混合灵敏度问题设计了H∞航向控制器.设计指标是在保证船舶能很好的跟踪航向指令的前提下尽可能的减小艏摇控制回路和横摇控制回路之间的耦合作用.仿真结果表明,所设计的舵减摇控制系统满足性能要求,取得了较高的减摇率,而且横摇运动对航向的影响很小.通过对摄动后的对象进行仿真,进一步验证了系统具有很好的鲁棒性. 相似文献