Quasipolynomials and the structure at infinity of linear systems with delay
by Maricela Figueroa; Jose de Jesus Rubio; Ytzeen Leyva
International Journal of Systems, Control and Communications (IJSCC), Vol. 3, No. 3, 2011

Abstract: In this paper is studied the structure at infinity of linear systems with delays and the transfer function is expressed as a quotient of quasipolynomials. To know the behaviour at infinity of the transfer function is studied the location of the roots of quasipolynomials in the extended complex plane. It also explores the concept of zero at infinity of a rational function, since the structure at infinity is related to the zeros at infinity of the transfer function. Subsequently, there is an application to the problem of disturbance rejection.

Online publication date: Tue, 31-Mar-2015

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