  This paper deals with designing a robust fixed-order dynamic output feedback
controller for uncertain fractional order linear time invariant (FO-LTI)
systems by means of linear matrix inequalities (LMIs). Our purpose is to design
a low order controller that stabilizes the fractional-order linear system in
the presence of model uncertainties. No limitative constraint on the state
space matrices of the uncertain system is assumed in the design procedure.
Furthermore, adopting the most complete model of linear controller, with direct
feedthrough parameter, does not disturb the LMI-based approach of developing
robust stabilizing control. Eventually, the authors illustrate the advantages
of the proposed method by some examples and their numerical simulation.
