Cited by 9Adaptive Control of Nonlinear SystemsStability and Control of Uncertain SystemsNeural Networks Stability and Synchronization

Predefined-Time Precise Tracking of Uncertain MIMO Nonlinear Systems With Time-Varying Input Delay

Hua, Zhiwei, Xu, Shengyuan·2025·IEEE Transactions on Circuits and Systems I: Regular Papers

Abstract

This paper investigates the adaptive predefined-time (PT) precise tracking control for uncertain nonlinear multi-input multi-output (MIMO) systems with time-varying input delay. Precise tracking in uncertain MIMO nonlinear systems is particularly challenging, especially when uncertainties include unknown control directions, nonlinear functions, and external disturbances. This paper extends the existing methods that typically require specific controllability conditions by proposing a novel PT precise tracking control scheme for more general MIMO strict-feedback nonlinear systems. This approach introduces an L-K functional containing positive definite time-varying function matrices, combines bounded estimation techniques with the backstepping method, and incorporates auxiliary signals to compensate for the effects of time-varying input delay. The proposed scheme ensures the boundedness of all closed-loop system signals and provides a rigorous proof that the auxiliary signals are also bounded, while guaranteeing that the tracking error converges to origin within the predefined time. Finally, the proposed PT control scheme is verified by two numerical simulation examples.

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Crossref · 10.1109/tcsi.2024.3519784

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Authors
Hua, Z., & Xu, S.
Affiliations
Nanjing University of Science and Technology (CN)
Venue
IEEE Transactions on Circuits and Systems I: Regular Papers
Published
2025-09
Volume
72
Issue
9
Pages
4994-5004
ISSN
  • 1549-8328 (ISSN-L)
  • 1558-0806
OpenAlex
W4405974336
Cited by
9
References
57
Citations by year
2026: 6 · 2025: 3
FWCI
3.51
Type
journal article
Language
en
Open access
closed
Locations
IEEE Transactions on Circuits and Systems I Regular Papers (publishedVersion)
Funders
  • National Natural Science Foundation of China (62221004, 62073166)
  • 333 Project
Topics
  • Physical Sciences › Engineering › Control and Systems Engineering › Adaptive Control of Nonlinear Systems
  • Physical Sciences › Engineering › Control and Systems Engineering › Stability and Control of Uncertain Systems
  • Physical Sciences › Computer Science › Computer Networks and Communications › Neural Networks Stability and Synchronization
Keywords
predefined-time control, MIMO nonlinear systems, time-varying input delay, strict-feedback systems, unknown control direction, external disturbances, backstepping control, auxiliary signals, adaptive control, closed-loop boundedness

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