The Possibility of using ITAE Poles in Optimal MIMO Decentralized Control Systems

Volume 5 Issue 3 May - July 2017

Research Paper

The Possibility of using ITAE Poles in Optimal MIMO Decentralized Control Systems

Ashraf M. Abdulhamed*, Ahmed A.M. El-Gaafary**

* Lecturer, Department of Communications and Electronics Engineering., College of Engineering, Umm Al-Qura University, Al-Lith Branch, KSA.

** Professor, Department of Electrical Engineering, Faculty of Engineering, Minia University, Egypt.

Abdulhamed. A.M., and El-Gaafary. A.A.M. (2017). The Possibility of using ITAE Poles in Optimal MIMO Decentralized Control Systems. i-manager’s Journal on Instrumentation and Control Engineering, 5(3), 1-9. https://doi.org/10.26634/jic.5.3.13677

Abstract

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.