Engineering » Control Engineering

Time-Delay Systems

Edited by Dragutin Debeljkovic, ISBN 978-953-307-559-4, 226 pages, Publisher: InTech, Chapters published February 10, 2011 under CC BY-NC-SA 3.0 license
DOI: 10.5772/635

Time delay is very often encountered in various technical systems, such as electric, pneumatic and hydraulic networks, chemical processes, long transmission lines, robotics, etc. The existence of pure time lag, regardless if it is present in the control or/and the state, may cause undesirable system transient response, or even instability. Consequently, the problem of controllability, observability, robustness, optimization, adaptive control, pole placement and particularly stability and robustness stabilization for this class of systems, has been one of the main interests for many scientists and researchers during the last five decades.