Robust control of a MAGLEV suspension system with mismatched uncertainties via DOBC approach.pdf (283.61 kB)
Robust control of nonlinear MAGLEV suspension system with mismatched uncertainties via DOBC approach
journal contribution
posted on 2012-12-07, 12:46 authored by Jun Yang, Argyrios C. Zolotas, Wen-Hua ChenWen-Hua Chen, Konstantinos Michail, Shihua LiRobust control of a class of uncertain systems that have disturbances and uncertainties not satisfying “matching” condition is investigated in this paper via a disturbance observer based control (DOBC) approach. In the context of this paper, “matched” disturbances/uncertainties stand for the disturbances/uncertainties entering the system through the same channels as control inputs. By properly designing a disturbance compensation gain, a novel composite controller is proposed to counteract the “mismatched” lumped disturbances from the output channels. The proposed method significantly extends the applicability of the DOBC methods. Rigorous stability analysis of the closed-loop system with the proposed method is established under mild assumptions. The proposed method is applied to a nonlinear MAGnetic LEViation (MAGLEV) suspension system. Simulation shows that compared to the widely used integral control method, the proposed method provides significantly improved disturbance rejection and robustness against load variation.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Aeronautical and Automotive Engineering
Citation
YANG, J. ... et al, 2011. Robust control of nonlinear MAGLEV suspension system with mismatched uncertainties via DOBC approach. ISA Transactions, 50 (3), pp. 389 - 396Publisher
Elsevier © ISAVersion
- AM (Accepted Manuscript)
Publication date
2011Notes
This article was published in the journal, ISA Transactions [© Elsevier] and the definitive version is available at: http://dx.doi.org/10.1016/j.isatra.2011.01.006,ISSN
0019-0578Publisher version
Language
- en