Ye, Jiaxing;
Wang, Mingyi;
Cai, Shun;
Zhang, Chaoyu;
Asef, Pedram;
Cui, Sihang;
Li, Junchi;
... Li, Liyi; + view all
(2026)
Adaptive Fractional-Order Resonant Control with Fixed-Time Augmented Extended State Observer for Current Disturbance Attenuation in Electric Propulsion System.
IEEE Transactions on Transportation Electrification
10.1109/TTE.2026.3652207.
(In press).
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Abstract
Classical current control strategies in electric propulsion systems often suffer from degraded performance under periodic and aperiodic disturbances. To overcome these limitations, this paper proposes a novel current control framework that combines an adaptive fractional order resonant controller (AFRC) with a fixedtime augmented extended state observer (FxTAESO), aiming to enhance disturbance rejection and dynamic robustness. Firstly, the proposed AFRC introduces a self-tuning fractional-order operator, which adaptively adjusts in real-time according to load current, harmonic rejection strength, and desired phase margin. This adaptive mechanism enables precise harmonic compensation while ensuring stability and robustness across the varying operating conditions. Subsequently, the FxTAESO incorporates a current integral term as system augmented variable to decouple the coupling effect between current measurement noise and high observer gains. Additionally, by embedding an improved nonlinear fixed-time convergence law, the observer ensures that the estimation error converges to a bounded neighborhood of the equilibrium point within a predetermined time, independent of initial conditions. Finally, experimental validation on a PMSM drive platform demonstrates that the proposed FxTAESOAFRC scheme achieves superior steady-state accuracy, faster transient response, and stronger disturbance suppression compared to conventional methods.
| Type: | Article |
|---|---|
| Title: | Adaptive Fractional-Order Resonant Control with Fixed-Time Augmented Extended State Observer for Current Disturbance Attenuation in Electric Propulsion System |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/TTE.2026.3652207 |
| Publisher version: | https://ieeexplore.ieee.org/Xplore/home.jsp |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. It has been made open access under the Creative Commons (CC BY) licence under the terms of the UCL Intellectual Property (IP) Policy and UCL Publications Policy. |
| Keywords: | Augmented extended state observer, adaptive fractional-order, current control, electric propulsion system, fixedtime convergence, permanent magnet synchronous motor |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10219742 |
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