jic.5.3.13677 The Possibility of using ITAE Poles in Optimal MIMO Decentralized Control Systems Ashraf M. Abdulhamed Ahmed A.M. El-Gaafary Journal on Instrumentation and Control Engineering 2321–1148 5 3 1 9 10.26634/jic.5.3.13677 Decentralized Input control, ITAE, LQR, MIMO system, pole placement This study introduces the input decentralized control technique for a strongly coupled MIMO system in a simple and clear procedure through a numerical example based on a combination of both pole placement and linear quadratic regulator techniques. This system can be stabilized by a multilevel control, each decoupled subsystem can be stabilized separately by using local controllers, which can provide a desired degree of stability, while global controllers are applied to enhance the overall system stability through reducing the effect of the interconnections among subsystems. The possibility of using the predetermined ITAE poles at different frequency values is investigated, these pole locations may be deviated from its nominal placed values for each decoupled subsystem, which affect subsystem as well as overall system stability, or lead to a slow overall system eigenvalues. Linear, quadratic optimal technique can be applied over the subsystem level in order to shift the slowest obtained pole locations into a much more stable places, which in turn shift the slowest overall system eigenvalues and guarantee a higher stability degree. This procedure can be applied many times until all the undesired poles are shifted. May - July 2017 Copyright © 2017 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=13677