  This paper deals with the problem of robust dynamic output feedback
stabilization of interval fractional-order linear time invariant (FO-LTI)
systems with the fractional order $1\le\alpha<2$. In this study, a new
formulation based on the null-space analysis of the system matrices is proposed
using linear matrix inequalities (LMIs). The applied uncertain model is the
most complete model of linear interval systems, in which all of the systems
matrices are interval matrices. A robust dynamic output feedback controller is
designed that asymptotically stabilizes the interval FO-LTI system, where no
limiting constraint is assumed on the state space matrices of the uncertain
system. Eventually, a numerical example with simulations is presented to
demonstrate the effectiveness and correctness of the theoretical results.
