A fractional representation approach to the robust regulation problem for MIMO systems
arXiv:2005.11125 · doi:10.1002/rnc.6246
Abstract
The aim of this paper is in developing unifying frequency domain theory for robust regulation of MIMO systems. The main theoretical results achieved are a new formulation of the internal model principle, solvability conditions for the robust regulation problem, and a parametrization of all robustly regulating controllers. The main results are formulated with minimal assumptions and without using coprime factorizations, thus guaranteeing their applicability with a very general class of systems. In addition to theoretical results, the design of robust controllers is addressed. The results are illustrated by two examples involving a delay and a heat equation.
21 pages, 3 figures. To appear in International Journal of Robust and Nonlinear Control