Some further observations on the differentiation method of modal reduction

T. Nigel Lucas

Research output: Contribution to journalArticle

24 Citations (Scopus)


The differentiation method of model reduction is shown to be equivalent to forming successive ratios of multipoint Taylor polynomial approximation of the numerator and denominator of the transfer function, respectively. This reformulation allows the method to be applied entirely through a Routh-type array structure. Strong links are seen to exist between the method and other stability preserving methods via this Routh-type structure.
Original languageEnglish
Pages (from-to)1389-1391
Number of pages3
JournalIEEE Transactions on Automatic Control
Issue number9
Publication statusPublished - Sep 1992


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