A Generalized Observer for Estimating Fast–Varying Disturbances

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dc.contributor.authorTon, Duc Do
dc.contributor.authorNguyen, Hoach The
dc.date.accessioned2020-05-19T10:42:58Z
dc.date.available2020-05-19T10:42:58Z
dc.date.issued2018-04
dc.description.abstractIn 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.identifier.citationDo, 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.2018.2833430en_US
dc.identifier.issn2169-3536
dc.identifier.other10.1109/access.2018.2833430
dc.identifier.urihttps://ieeexplore.ieee.org/document/8354722
dc.identifier.urihttps://doi.org/10.1109/access.2018.2833430
dc.identifier.urihttp://nur.nu.edu.kz/handle/123456789/4731
dc.language.isoenen_US
dc.publisherIEEEen_US
dc.relation.ispartofseriesIEEE Access;
dc.rightsAttribution-NonCommercial-ShareAlike 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/us/*
dc.subjectDisturbance observeren_US
dc.subjectoptimal controlen_US
dc.subjectwind energy conversion systemen_US
dc.subjectfast-varying disturbanceen_US
dc.subjectuncertainties estimationen_US
dc.subjectResearch Subject Categories::TECHNOLOGYen_US
dc.titleA Generalized Observer for Estimating Fast–Varying Disturbancesen_US
dc.typeArticleen_US
workflow.import.sourcescience

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