Disturbance Rejection for Systems with Uncertainties Based on Fixed-Time Equivalent-Input-Disturbance Approach

IF 15.3 1区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS
Qun Lu;Xiang Wu;Jinhua She;Fanghong Guo;Li Yu
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引用次数: 0

Abstract

This paper presents a fixed-time equivalent-input-disturbance (EID) approach to deal with the problem of robust output-feedback control for perturbed uncertain systems. This method uses the basic structure of the conventional EID approach and treats uncertainties and disturbances as a lumped disturbance on the control-input channel. A fixed-time state observer enables state estimation, which resolves the causality issue in an EID-based control system, is finished in a fixed time. An implicit Lyapunov function, the homogeneity with dilation, the input-to-state stability, and the small-gain theorem are used to analyze the convergence and robustness of the EID-based system with measurement noise. Numerical and experimental results are presented to demonstrate the effectiveness and superiority of the proposed method.
基于固定时间等效输入干扰法的不确定性系统干扰抑制方法
本文提出了一种固定时间等效输入干扰(EID)方法,用于处理扰动不确定系统的鲁棒输出反馈控制问题。该方法采用传统 EID 方法的基本结构,并将不确定性和干扰视为控制输入通道上的叠加干扰。固定时间状态观测器能在固定时间内完成状态估计,解决了基于 EID 的控制系统中的因果关系问题。利用隐式 Lyapunov 函数、扩张同质性、输入到状态稳定性和小增益定理分析了基于 EID 的系统在测量噪声下的收敛性和鲁棒性。数值和实验结果证明了所提方法的有效性和优越性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Ieee-Caa Journal of Automatica Sinica
Ieee-Caa Journal of Automatica Sinica Engineering-Control and Systems Engineering
CiteScore
23.50
自引率
11.00%
发文量
880
期刊介绍: The IEEE/CAA Journal of Automatica Sinica is a reputable journal that publishes high-quality papers in English on original theoretical/experimental research and development in the field of automation. The journal covers a wide range of topics including automatic control, artificial intelligence and intelligent control, systems theory and engineering, pattern recognition and intelligent systems, automation engineering and applications, information processing and information systems, network-based automation, robotics, sensing and measurement, and navigation, guidance, and control. Additionally, the journal is abstracted/indexed in several prominent databases including SCIE (Science Citation Index Expanded), EI (Engineering Index), Inspec, Scopus, SCImago, DBLP, CNKI (China National Knowledge Infrastructure), CSCD (Chinese Science Citation Database), and IEEE Xplore.
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