Open AccessExtended state observer‐based sliding mode control for PWM‐based DC–DC buck power converter systems with mismatched disturbances
Author(s) -
Wang Junxiao,
Li Shihua,
Yang Jun,
Wu Bin,
Li Qi
Publication year - 2015
Publication title -
iet control theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.059
H-Index - 108
eISSN - 1751-8652
pISSN - 1751-8644
DOI - 10.1049/iet-cta.2014.0220
Subject(s) - control theory (sociology) , pulse width modulation , buck converter , state observer , observer (physics) , sliding mode control , power (physics) , mode (computer interface) , computer science , control (management) , physics , nonlinear system , quantum mechanics , artificial intelligence , operating system
This study investigates an extended state observer (ESO)‐based sliding mode control (SMC) approach for pulse‐width modulation‐based DC–DC buck converter systems subject to mismatched disturbances. By designing a novel sliding‐mode manifold incorporated with a disturbance estimation technique, an ESO‐based SMC method is designed to deal with mismatched disturbances. A rigorous stability analysis is also presented. As compared with the nominal SMC method, the proposed method obtains a better disturbance rejection ability even the disturbances do not satisfy the so‐called matching condition. Simulations and experimental comparison results are implemented to verify the effectiveness of the proposed control method.