首页|Disturbance Rejection for Systems with Uncertainties Based on Fixed-Time Equivalent-Input-Disturbance Approach

Disturbance Rejection for Systems with Uncertainties Based on Fixed-Time Equivalent-Input-Disturbance Approach

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  • NETL
  • NSTL
  • IEEE
This paper presents a fixed-time equivalent-input-disturbance (EID) approach to deal with the problem of robust output-feedback control for perturbed uncertain systems。 This method uses the basic structure of the conventional EID approach and treats uncertainties and disturbances as a lumped disturbance on the control-input channel。 A fixed-time state observer enables state estimation， which resolves the causality issue in an EID-based control system， is finished in a fixed time。 An implicit Lyapunov function， the homogeneity with dilation， the input-to-state stability， and the small-gain theorem are used to analyze the convergence and robustness of the EID-based system with measurement noise。 Numerical and experimental results are presented to demonstrate the effectiveness and superiority of the proposed method。

Uncertain systemsUncertaintyMagnetic separationNoiseObserversControl systemsRobustnessNoise measurementVoltage controlConvergence

Qun Lu、Xiang Wu、Jinhua She、Fanghong Guo、Li Yu

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School of Aeronautical Engineering, Taizhou University, Jiaojiang, China|Zhejiang Dafeng Industry Co., Ltd., Hangzhou, China

Zhejiang Provincial United Key Laboratory of Embedded Systems, Zhejiang University of Technology, Hangzhou, China

School of Engineering, Tokyo University of Technology, Tokyo, Japan

2024

10.1109/JAS.2024.124650

IEEE/CAA journal of automatica sinica

IEEE/CAA journal of automatica sinica

ISSN：
年,卷(期)：2024.11(12)
  • 38