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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/42050


    Title: Digital redesign of uncertain interval systems via particle swarm optimization
    Authors: Hsu, Chen-chien;Gao, Chun-hui
    Contributors: 淡江大學電機工程學系
    Date: 2009-01
    Issue Date: 2010-02-23 14:46:48 (UTC+8)
    Publisher: Canakkale: World Academy of Science, Engineering and Technology
    Abstract: In this paper, a PSO-based approach is proposed to derive a digital controller for redesigned digital systems having an interval plant based on resemblance of the extremal gain/phase margins. By combining the interval plant and a controller as an interval system, extremal GM/PM associated with the loop transfer function can be obtained. The design problem is then formulated as an optimization problem of an aggregated error function revealing the deviation on the extremal GM/PM between the redesigned digital system and its continuous counterpart, and subsequently optimized by a proposed PSO to obtain an optimal set of parameters for the digital controller. Computer simulations have shown that frequency responses of the redesigned digital system having an interval plant bare a better resemblance to its continuous-time counter part by the incorporation of a PSO-derived digital controller in comparison to those obtained using existing open-loop discretization methods.
    Relation: International Journal of Computer, Information, and Systems Science, and Engineering 3(2), pp.74-79
    Appears in Collections:[電機工程學系暨研究所] 期刊論文

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