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首页> 外文期刊>Journal of the Franklin Institute >Robust adaptive finite-time stabilization control for a class of nonlinear switched systems based on finite-time disturbance observer
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Robust adaptive finite-time stabilization control for a class of nonlinear switched systems based on finite-time disturbance observer

机译：基于有限时间干扰观察者的一类非线性交换系统的鲁棒自适应有限时间稳定控制

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摘要

The problem of adaptive global finite-time stabilization control for a class of nonlinear switched systems in the presence of external perturbations and arbitrary switchings has been addressed in this research study. The proposed scheme has been designed based on a finite-time estimation technique in which during the control procedure, unknown imposed perturbations are accurately estimated by means of the designed finite-time disturbance observer (FTDO). Due to the exact estimation of the external disturbances within a given finite time, the encountered complications and adversities from loss of information in the Lyapunov parameter estimation (LPE) methods have been solved which are caused by the persistent switchings in the system. Furthermore, a new solution for the problem of chattering phenomenon in nonlinear switched systems has been presented by utilizing the designed FTDO, which can counteract the malfunctioning responses of the system caused by external disturbances and unmodeled dynamics. In this paper, an acknowledged class of nonlinear switched systems has been taken into account which is in the general form of canonical structure. In addition, the established design strategy is formulated for the control of perturbed nonlinear switched systems with one and only input and assures that the system states through the finite-time convergence characteristic, reach the equilibrium point of origin. Finally, numerical simulations are carried out on a mass-spring-damper (MSD) dynamical system to indicate advantages and superior efficiency of the suggested method. (C) 2021 The Franklin Institute. Published by Elsevier Ltd. All rights reserved.
机译：在本研究研究中，已经解决了在存在外部扰动和任意切换的存在下一类非线性交换系统的自适应全球有限时间稳定控制问题。所提出的方案已经基于有限时间估计技术，其中在控制过程中，通过设计的有限时间干扰观察者（FTDO）精确地估计未知的扰动。由于给定的有限时间内的外部干扰的精确估计，已经解决了Lyapunov参数估计（LPE）方法中的信息丢失的遇到的并发症和逆境，这是由系统的持久性切换引起的。此外，通过利用设计的FTDO，已经介绍了非线性开关系统中的抖动现象问题的新解决方案，这可以抵消由外部干扰和未拼接的动态引起的系统的故障响应。本文已经考虑了一种公认的非线性交换系统，其是规范结构的一般形式。此外，建立的设计策略配制用于控制具有一个且仅输入的扰动的非线性交换系统，并确保系统状态通过有限时间收敛特性，达到平衡原点。最后，在质量弹簧阻尼器（MSD）动态系统上进行数值模拟，以表明提出方法的优点和优异效率。 （c）2021年富兰克林学院。 elsevier有限公司出版。保留所有权利。

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