Stabilization of feedforward nonlinear time-delay systems with vanishing actuator effectiveness by linear time-varying feedback

IF 5.9 2区计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS

Automatica Pub Date : 2025-09-29 DOI:10.1016/j.automatica.2025.112635

Kai Zhang, Bin Zhou

引用次数: 0

Abstract

This paper considers the problem of global stabilization for a class of feedforward nonlinear systems in the presence of state delay, uncertain parameters, and vanishing actuator effectiveness. By assuming that the time-delay nonlinear function is unknown but satisfies a linear growth condition with unknown parameters, a state feedback controller incorporating two time-varying parameters is designed. One parameter focuses on compensating for the vanishing actuator effectiveness, while the other addresses uncertain nonlinear terms. The feature of the approach is that the designed controller is linear, and its implementation do not necessitate online computation, thereby significantly conserving computational resources. An example is included to verify the effectiveness of the proposed approaches.

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线性时变反馈镇定执行器有效性消失的前馈非线性时滞系统

研究一类存在状态延迟、参数不确定和执行器有效性消失的前馈非线性系统的全局镇定问题。假设时滞非线性函数是未知的，但满足参数未知的线性增长条件，设计了包含两个时变参数的状态反馈控制器。其中一个参数主要用于补偿执行器有效性的消失，而另一个参数则用于解决不确定的非线性项。该方法的特点是所设计的控制器是线性的，其实现不需要在线计算，从而大大节省了计算资源。最后通过实例验证了所提方法的有效性。

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

Automatica 工程技术-工程：电子与电气

CiteScore

10.70

自引率

7.80%

发文量

617

审稿时长

5 months

期刊介绍： Automatica is a leading archival publication in the field of systems and control. The field encompasses today a broad set of areas and topics, and is thriving not only within itself but also in terms of its impact on other fields, such as communications, computers, biology, energy and economics. Since its inception in 1963, Automatica has kept abreast with the evolution of the field over the years, and has emerged as a leading publication driving the trends in the field. After being founded in 1963, Automatica became a journal of the International Federation of Automatic Control (IFAC) in 1969. It features a characteristic blend of theoretical and applied papers of archival, lasting value, reporting cutting edge research results by authors across the globe. It features articles in distinct categories, including regular, brief and survey papers, technical communiqués, correspondence items, as well as reviews on published books of interest to the readership. It occasionally publishes special issues on emerging new topics or established mature topics of interest to a broad audience. Automatica solicits original high-quality contributions in all the categories listed above, and in all areas of systems and control interpreted in a broad sense and evolving constantly. They may be submitted directly to a subject editor or to the Editor-in-Chief if not sure about the subject area. Editorial procedures in place assure careful, fair, and prompt handling of all submitted articles. Accepted papers appear in the journal in the shortest time feasible given production time constraints.