Khelouat, LilaAhriche, A.2022-07-142022-07-142018https://dspace.univ-boumerdes.dz/handle/123456789/9863In this paper, robust controllability and observability problem of linear time-delay systems with parametric uncertainties is considered. A functional-based transformation is first presented, which transforms the system with delayed measurements into a system without delay formally. Based on the transformed system, we develop an effective method for checking the robust controllability and observability tests of the uncertain system using interval analysis.enFunctional transformationInterval analysisLinear time-delay systemsParametric uncertaintiesRobust controllability testRobust observability testUncertain systemArticle