@article{e656fd3640f84125b862b54b0269f3fa,
title = "Observability of linear systems with commensurate delays and unknown inputs",
abstract = "This paper investigates the observability analysis for linear time systems whose outputs are affected by unknown inputs. Three different definitions of observability are proposed. By introducing the Smith form and comparing the invariant factors, a sufficient condition is deduced for each proposed observability definition. Three examples are given for the purpose of highlighting the effectiveness of the proposed approach.",
keywords = "Commensurate delays, Delay systems, Observability, Unknown inputs",
author = "Bejarano, {Francisco Javier} and Gang Zheng",
note = "Funding Information: The first author acknowledges the support of IPN SIP project 20141364 . The material in this paper was not presented at any conference. This paper was recommended for publication in revised form by Associate Editor Akira Kojima under the direction of Editor Ian R. Petersen. ",
year = "2014",
month = aug,
doi = "10.1016/j.automatica.2014.05.032",
language = "Ingl{\'e}s",
volume = "50",
pages = "2077--2083",
journal = "Automatica",
issn = "0005-1098",
number = "8",
}