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Estimation for a Class of Mismatched Unknown Disturbance Based on Two-step Disturbance Observer
Author(s): 
Pages: 307-311
Year: Issue:  4
Journal: Yantai Teachers University Journal, Natural Science Edition

Keyword:  unknown frequency disturbancedisturbance observernonlinear system;
Abstract: An estimation strategy of two-step disturbance observer was proposed for mismatched unknown frequency disturbance existing in a class of nonlinear systems. Two-step disturbance observer was designed to estimate the disturbance,and the disturbance estimation error system was asymptotically stable. A number simulation example was given to demonstrate the correctness and effectiveness of the proposed method.
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