Ren, Chao and Ding, Yutong and Hu, Liang and Liu, Jinguo and Ju, Zhaojie and Ma, Shugen (2022) Active Disturbance Rejection Control of Euler-Lagrange Systems Exploiting Internal Damping. IEEE Transactions on Cybernetics, 52 (6). pp. 4334-4345. DOI https://doi.org/10.1109/tcyb.2020.3026190
Ren, Chao and Ding, Yutong and Hu, Liang and Liu, Jinguo and Ju, Zhaojie and Ma, Shugen (2022) Active Disturbance Rejection Control of Euler-Lagrange Systems Exploiting Internal Damping. IEEE Transactions on Cybernetics, 52 (6). pp. 4334-4345. DOI https://doi.org/10.1109/tcyb.2020.3026190
Ren, Chao and Ding, Yutong and Hu, Liang and Liu, Jinguo and Ju, Zhaojie and Ma, Shugen (2022) Active Disturbance Rejection Control of Euler-Lagrange Systems Exploiting Internal Damping. IEEE Transactions on Cybernetics, 52 (6). pp. 4334-4345. DOI https://doi.org/10.1109/tcyb.2020.3026190
Abstract
Active disturbance rejection control (ADRC) is an efficient control technique to accommodate both internal uncertainties and external disturbances. In the typical ADRC framework, however, the design philosophy is to "force" the system dynamics into a double-integral form by an extended state observer (ESO) and then the controller is designed. Especially, the systems' physical structure has been neglected in such a design paradigm. In this article, a new ADRC framework is proposed by incorporating at a fundamental level the physical structure of the Euler-Lagrange (EL) systems. In particular, the differential feedback gain can be selected considerably small or even 0, due to the effective exploitation of the system's internal damping. The design principle stems from an analysis of the energy balance of EL systems, yielding a physically interpretable design. Moreover, the exploitation of the system's internal damping is thoroughly discussed, which is of practical significance for applications of the proposed design. Besides, a sliding-mode ESO is designed to improve the estimation performance over traditional linear ESO. Finally, the proposed control framework is illustrated through tracking control of an omnidirectional mobile robot. Extensive experimental tests are conducted to verify the proposed design as well as the discussions.
Item Type: | Article |
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Uncontrolled Keywords: | Active disturbance rejection control; Euler–Lagrange system; extended state observer; internal damping |
Divisions: | Faculty of Science and Health Faculty of Science and Health > Computer Science and Electronic Engineering, School of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 05 Sep 2022 15:15 |
Last Modified: | 30 Oct 2024 19:36 |
URI: | http://repository.essex.ac.uk/id/eprint/33381 |
Available files
Filename: Manuscript_0822.pdf