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A Generalized Observer for Estimating Fast–Varying Disturbances

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dc.contributor.author Ton, Duc Do
dc.contributor.author Nguyen, Hoach The
dc.date.accessioned 2020-05-19T10:42:58Z
dc.date.available 2020-05-19T10:42:58Z
dc.date.issued 2018-04
dc.identifier.citation Do, T. D., & Nguyen, H. T. (2018). A Generalized Observer for Estimating Fast–Varying Disturbances. IEEE Access, 6, 28054–28063. https://doi.org/10.1109/access.2018.2833430 en_US
dc.identifier.issn 2169-3536
dc.identifier.other 10.1109/access.2018.2833430
dc.identifier.uri https://ieeexplore.ieee.org/document/8354722
dc.identifier.uri https://doi.org/10.1109/access.2018.2833430
dc.identifier.uri http://nur.nu.edu.kz/handle/123456789/4731
dc.description.abstract In this paper, a generalized disturbance observer (GDO) is proposed for estimating a broad range of disturbances including fast-varying ones. The estimation error of the proposed GDO is proven to be ultimately bounded provided that an arbitrary r th time derivative of disturbance is bounded. A broader range of disturbances can be estimated by the proposed GDO in comparison with the conventional disturbance observers (DO) or even recent fast-varying disturbance observers (FVDO) because conservative assumptions such as zero time-derivatives of disturbances are avoided. Furthermore, intuitive rules for gain-tuning and selecting the weighting matrices in the observer design are systematically presented. To validate the superiority of the proposed GDO to conventional FVDOs, comprehensive studies using the linear and nonlinear systems with different types of disturbances are conducted in the MATLAB/Simulink platform. In a specific application of wind energy conversion systems, the proposed GDO is employed to precisely estimate the aerodynamic torque. Then, a completed control system with a linear quadratic regulator (LQR) is designed and implemented to verify the final performance with the proposed GDO. The proposed observer-based LQR is proved to ultimately be bounded stable with superior performances to further validate the proposed GDO. en_US
dc.language.iso en en_US
dc.publisher IEEE en_US
dc.relation.ispartofseries IEEE Access;
dc.rights Attribution-NonCommercial-ShareAlike 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-sa/3.0/us/ *
dc.subject Disturbance observer en_US
dc.subject optimal control en_US
dc.subject wind energy conversion system en_US
dc.subject fast-varying disturbance en_US
dc.subject uncertainties estimation en_US
dc.subject Research Subject Categories::TECHNOLOGY en_US
dc.title A Generalized Observer for Estimating Fast–Varying Disturbances en_US
dc.type Article en_US
workflow.import.source science

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