Electron. J. Differential Equations, Vol. 2024 (2024), No. 80, pp. 1-14.

Output tracking for a 1-D wave equations with spatially varying coefficients and subject to unknown disturbances

Yan-Na Jia, Can Jin, Xiu-Fang Yu

Abstract:
In this article, we study the output tracking problem for a wave equation with variable coefficients, and subject to boundary control matched disturbances. Both the disturbances and the reference signal are unknown harmonic signal. The performance output is non-collocated with the control input. Initially, we establish an undisturbed auxiliary system and devise an appropriate internal model dynamic to reformulate the tracking error. Subsequently, we introduce an error-based feedback controller, leveraging an invertible transformation to achieve output tracking. The well-posedness and stability of the closed-loop system are established by applying semigroup theory approach. Finally, we illustrate the effectiveness of these theoretical results with numerical simulations.

Submitted June 14, 2024. Published December 3. 2024.
Math Subject Classifications: 93C20, 35L05.
Key Words: Output tracking; internal model dynamic; error feedback; wave equation.
DOI: 10.58997/ejde.2024.80

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Yan-Na Jia
School of Mathematics and Statistics
Taiyuan Normal University
Taiyuan Shanxi 030619, China
email: jiayanna1224@126.com
Can Jin
School of Mathematics and Statistics
Taiyuan Normal University
Taiyuan Shanxi 030619, China
email: jclllnnn@163.com
Xiu-Fang Yu
School of Mathematics and Statistics
Taiyuan Normal University
Taiyuan Shanxi 030619, China
email: yuxiufang@tyut.edu.cn

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