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Semi‐Global Exquisite Disturbance Attenuation Control for Perturbed Uncertain Nonlinear Systems
Author(s) -
Yang Jun,
Zhang Chuanlin,
Li Shihua,
Niu Xitong
Publication year - 2017
Publication title -
asian journal of control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.769
H-Index - 53
eISSN - 1934-6093
pISSN - 1561-8625
DOI - 10.1002/asjc.1475
Subject(s) - control theory (sociology) , disturbance (geology) , nonlinear system , attenuation , feedback linearization , linearization , stability (learning theory) , computer science , control (management) , observer (physics) , control engineering , engineering , physics , quantum mechanics , artificial intelligence , optics , paleontology , machine learning , biology
Motivated by the design of disturbance observers with active elimination of the adverse effects caused by system uncertainties and disturbances, the problem of semi‐global exquisite disturbance attenuation control for a class of perturbed nonlinear systems is investigated in this paper. A feedback domination technique is utilized to integrate with the disturbance observer design and then a general composite active anti‐disturbance control law is proposed. With a recursive design procedure, the mismatched lumped disturbances are compensated in a novel step‐by‐step way while the non‐vanishing nonlinearities are treated via a feedback domination approach, rather than utilizing the straightforward feedback linearization method. The closed‐loop control performance and disturbance rejection ability now can be improved. A rigorous stability analysis assures the effectiveness of the proposed strategy. Numerical simulation results affirm the improved control and disturbance rejection performances with respect to several related existing results.