Cited by 36Hydraulic and Pneumatic SystemsAdaptive Control of Nonlinear SystemsStability and Control of Uncertain Systems

Disturbance Observer-Based Fixed-Time Event-Triggered Control for Networked Electro-Hydraulic Systems with Input Saturation

Wang, Chen, Wang, Jianhui, Guo, Qing, Liu, Zhi, Chen, C. L. Philip·2025·IEEE Transactions on Industrial Electronics

Abstract

The electro-hydraulic system (EHS) has been widely utilized in modern industry due to its high power-to-weight ratio and payload capacity. In this study, a disturbance observer-based fixed-time event-triggered controller is designed for a networked EHS with input saturation. First, a fixed-time disturbance observer (FTDO) is designed to compensate for the model uncertainties and unknown external disturbance. Subsequently, to alleviate the communication pressure of the EHS, a switching threshold event-triggered mechanism (STETM) is constructed to determine the control voltage update. Additionally, an input saturation estimator (ISE) is used to avoid the input saturation caused by the high-order error items and derivative explosions of virtual control variables. The rigorous theoretical derivations demonstrate that the designed controller guarantees the convergence of both the observation error and the position tracking error within a fixed time period, regardless of the initial EHS states. Furthermore, the network communication resources of the EHS are saved while the system stability and satisfactory tracking performance are guaranteed. Finally, the effectiveness of the proposed controller is verified by the simulation results and experimental results.

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Crossref · 10.1109/tie.2024.3429638

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Authors
Wang, C., Wang, J., Guo, Q., Liu, Z., & Chen, C. L. P.
Affiliations
  • University of Electronic Science and Technology of China (CN)
  • Guangzhou University (CN)
  • Guangdong University of Technology (CN)
  • South China University of Technology (CN)
Venue
IEEE Transactions on Industrial Electronics
Published
2025-02
Volume
72
Issue
2
Pages
1784-1794
ISSN
  • 0278-0046 (ISSN-L)
  • 1557-9948
OpenAlex
W4401109848
Cited by
36
References
36
Citations by year
2026: 20 · 2025: 15 · 2024: 1
FWCI
4.81
Type
journal article
Language
en
Open access
closed
Locations
IEEE Transactions on Industrial Electronics (publishedVersion)
Funders
  • National Natural Science Foundation of China (52175046)
  • Sichuan Science and Technology Program (24ZDYF0070)
Topics
  • Physical Sciences › Engineering › Mechanical Engineering › Hydraulic and Pneumatic Systems
  • 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
Keywords
electro-hydraulic systems, fixed-time disturbance observer, event-triggered control, input saturation, networked control systems, model uncertainty compensation, location tracking, communication resource reduction

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