Work

Generalized fault estimator-based prescribed performance control for a class of strict-feedback nonlinear systems

Year: 2025

Type: article

Abstract: This paper addresses fault estimation and prescribed performance control for strict-feedback nonlinear systems subject to unknown time-varying faults. By introducing a novel intermediate variable for fault estimation, an adaptive fault estimator and a fault-tolerant controller are proposed. Utilizing a proof by contradiction, the designed prescribed performance control scheme resolves the complex coupling between fault estimation and adaptive control. Furthermore, all closed-loop signals are proven bounded, with both tracking and state errors converging to predesigned compact sets. Finally, numerical simulation on a single-link robot system validates the effectiveness of the proposed algorithm.

Source: AIMS Mathematics

DOI: 10.3934/math.2025819

Authors: Xuechao Zhang, Shichang Lu

Institutions: University of Science and Technology Liaoning, Liaoning Technical University

Language: English

Topic: Adaptive Control of Nonlinear Systems

Subfield: Control and Systems Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,200

OpenAlex ID: W4413170158