Please use this identifier to cite or link to this item: http://rportal.lib.ntnu.edu.tw:80/handle/77345300/32104
Title: Digital redesign of uncertain interval systems via particle swarm optimization
Authors: 國立臺灣師範大學電機工程學系
Chen-Chien Hsu
Chun-Hwui Gao
Issue Date: 1-Jul-2008
Publisher: World Academy of Science, Engineering and Technology (WASET)
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.
URI: http://rportal.lib.ntnu.edu.tw/handle/77345300/32104
ISSN: 2070-3724
Other Identifiers: ntnulib_tp_E0607_01_010
Appears in Collections:教師著作

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