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A model-based unmatched disturbance rejection control approach for speed regulation of a converter-driven DC motor using output-feedback

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journal contribution
posted on 02.03.2022, 16:23 by Lu Zhang, Jun YangJun Yang, Shihua Li
The speed regulation problem with only speed measurement is investigated in this paper for a permanent magnet direct current (DC) motor driven by a buck converter. By lumping all unknown matched/unmatched disturbances and uncertainties together, the traditional active disturbance rejection control (ADRC) approach provides an intuitive solution for the problem under consideration. However, for such a higher-order disturbed system, the increase of poles for the extended state observer (ESO) therein will lead to drastically growth of observer gains, which causes severe noise amplification. This paper aims to propose a new model-based disturbance rejection controller for the converter-driven DC motor system using output-feedback. Instead of estimating lumped disturbances directly, a new observer is constructed to estimate the desired steady state of control signal as well as errors between the real states and their desired steady-state responses. Thereafter, a controller with only speed measurement is proposed by utilizing the estimates. The performance of the proposed method is tested through experiments on dSPACE. It is further shown via numerical calculations and experimental results that the poles of the observer within the proposed control approach can be largely increased without significantly increasing magnitude of the observer gains.

Funding

Natural Science Foundation of China (61973080, 61973081)

Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration (201928069002)

Key R&D Plan of Jiangsu Province (BE2020082-4)

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

IEEE/CAA Journal of Automatica Sinica

Volume

9

Issue

2

Pages

365 - 376

Publisher

Institute of Electrical and Electronics Engineers

Version

AM (Accepted Manuscript)

Rights holder

© IEEE

Publisher statement

© 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Acceptance date

28/03/2021

Publication date

2021-07-28

Copyright date

2022

ISSN

2329-9266

eISSN

2329-9274

Language

en

Depositor

Dr Jun Yang. Deposit date: 2 March 2022