文章基本信息

标题：An Extended Modal Identification for Linear Periodically Time-Varying Systems Based on Stability-Preserving State Transformation
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作者：Zhi-Sai Ma ; Li Liu ; Ward Heylen 等
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2015
卷号：48
期号：28
页码：656-661
DOI：10.1016/j.ifacol.2015.12.204
语种：English
出版社：Elsevier
摘要：AbstractThis paper proposes an extended modal identification method to extract the time-varying modes and poles of linear periodically time -varying (LPTV) systems. A set of poles defines a stabilitypreserving transformation relat ing the original LPTV state equation to a constant upper triangular state equation and the time-varying modes contain the informat ion regarding the stability of the original LPTV system. The relation between the time-varying modes and poles is presented. The time-varying modes and poles of LPTV systems are shown to be the extension of the linear time-invariant (LTI) case. The proposed identification method is finally illustrated by a numerical example.
关键词：KeywordsModal identificationLinear periodically time-varying systemsLinear time-invariant systemsLinear time-varying systemsTime-varying modes and polesState transformation