LAPSE:2023.25716
Published Article
LAPSE:2023.25716
Disturbance Observer-Based Offset-Free Global Tracking Control for Input-Constrained LTI Systems with DC/DC Buck Converter Applications
Kyunghwan Choi, Dong Soo Kim, Seok-Kyoon Kim
March 29, 2023
This paper presents an offset-free global tracking control algorithm for the input-constrained plants modeled as controllable and open-loop strictly stable linear time invariant (LTI) systems. The contribution of this study is two-fold: First, a global tracking control law is devised in such a way that it not only leads to offset-free reference tracking but also handles the input constraints using the invariance property of a projection operator embedded in the proposed disturbance observer (DOB). Second, the offset-free tracking property is guaranteed against uncertainties caused by plant-model mismatch using the DOB’s integral action for the state estimation error. Simulation results are given in order to demonstrate the effectiveness of the proposed method by applying it to a DC/DC buck converter.
Keywords
DC/DC buck converters, disturbance observer, input constraints, LTI systems, offset-free global tracking control
Suggested Citation
Choi K, Kim DS, Kim SK. Disturbance Observer-Based Offset-Free Global Tracking Control for Input-Constrained LTI Systems with DC/DC Buck Converter Applications. (2023). LAPSE:2023.25716
Author Affiliations
Choi K: Center for Eco-Friendly & Smart Vehicles, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea [ORCID]
Kim DS: Department of Creative Convergence Engineering, Hanbat National University, Daejeon 34158, Korea
Kim SK: Department of Creative Convergence Engineering, Hanbat National University, Daejeon 34158, Korea
Journal Name
Energies
Volume
13
Issue
16
Article Number
E4079
Year
2020
Publication Date
2020-08-06
Published Version
ISSN
1996-1073
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Original Submission
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PII: en13164079, Publication Type: Journal Article
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LAPSE:2023.25716
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doi:10.3390/en13164079
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