DOI: 10.1109/iccas.2014.6987742
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Abstract: In the paper, the reinterpretation of a disturbance observer formulated in the transfer function domain is considered. Recalling that the disturbance observer produces an addtional disturbance suppresion performance to the existing closed-loop system, the idea of this paper is that the disturbance observer can be an add-on controller only to suppress the disturbances. By inducing the equivalent block diagram from generalized disturbance observer based control system [9], we obtain the equivalent feedback cont…

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