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arXiv 1802.09200math.OC
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时变小扰动非线性系统的状态反馈控制局部渐近镇定

On the local asymptotic stabilization of the nonlinear systems with small time-varying perturbations by state-feedback control

Robert Vrabel

摘要:

本文研究了控制系统$\dot x=f(x,u)$的解与其控制系统的解之间的关系。(潜在未知的)扰动$\dot x=f(x,u)+w(x,t).$在未扰动系统在点$(0,0)$处的线性部分是可控的并且扰动$w(x,t)$渐近地足够小的假设下,存在一个$u=-Kx$形式的状态反馈控制器,使得扰动系统保持未扰动系统零解的局部渐近稳定性.本文的主要结果给出了保证这一性质的充分条件,更具体地说是系统重要参数之间的关系,同时也提供了计算吸引域下界的方法。此外,我们还得到了H. K. Khalil关于标称部分在原点$x=0.$处指数渐近稳定的(不受控)扰动系统的渐近行为

英文摘要:

In this paper, we are interested in the relation between the solutions of the control system $\dot x=f(x,u)$ and the solutions of its (potentially unknown) perturbation $\dot x=f(x,u)+w(x,t).$ Under the assumption that the linear part of the unperturbed system at the point $(0,0)$ is controllable and that disturbance $w(x,t)$ is asymptotically sufficiently small, there exists a state-feedback controller of the form $u=-Kx$ such that the perturbed system preserves the local asymptotic stability of the zero solution of unperturbed system. The main result of this paper gives the sufficient conditions, more specifically, the relations between the important parameters of the system, to ensure this property and at the same time provides the method for calculating the lower bound of region of attraction. Moreover, we obtain a nontrivial extension of the classical result of H. K. Khalil regarding asymptotic behavior of the (uncontrolled) perturbed systems whose nominal part is exponentially asymptotically stable at the origin $x=0.$

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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