On Calculation of Norms of 2D-systems

Resumo

Application of the Lyapunov method to the stability analysis and search of the 2Dsystem norms gives rise to the algebraic problems interpretable as expansion of the nontrivial matrix polynomials into the sum of squares or as parameterized linear matrix inequalities to be satisfied for certain ranges of the parameter values. The paper demonstrated a mechanism for transformation of such problems arising seeking the H∞-norm and a method for calculation of the H₂-norm of the 2D-systems. Both computational schemes are simpler than the existing results. Numerical examples are presented.