Date of Award


Document Type


Degree Name

Master of Science (MS)


Electrical Engineering

First Advisor

Hamid R. Ossareh


In this work, a computationally efficient solution for constraint management of square

multi-input multi-output (MIMO) systems is presented. The solution, referred to as

the Decoupled Reference Governor (DRG), maintains the highly-attractive computational

features of scalar reference governors (SRG) compared to Vector Reference

Governor (VRG) and Command Governor (CG). This work focuses on square MIMO

systems that already achieve the desired tracking performance. The goal of DRG is to

enforce output constraints and simultaneously ensure that the degradation to tracking

performance is minimal. DRG is based on decoupling the input-output dynamics

of the system so that every channel of the system can be viewed as an independent

input-output relationship, followed by the deployment of a bank of scalar reference

governors for each decoupled channel. We present a detailed set-theoretic analysis of

DRG, which highlights its main characteristics. A quantitative comparison between

DRG, SRG, and the VRG is also presented in order to illustrate the computational

advantages of DRG. Finally, a distillation process is introduced as an example to

illustrate the applicability of DRG.



Number of Pages

79 p.