function Ai = ex_estab_c_OP07_ex2()
%function Ai = ex_estab_c_OP07_ex2()
% Continuous-time uncertain system used for robust stability evaluation purposes. This systems was
% used in (Oliveira & Peres, IEEE-TAC 2007), Example 2.

A_1=[-0.789    -0.533    0.353  
    -0.469    -0.390    0.676  
    -0.970    -0.914    0.053];
A_2=[ -1.091    -0.349    0.498  
    0.498    -0.772    0.223  
    -0.113    0.640    -0.493];
A_3=[-0.419    0.896    -0.854  
    -0.198    -0.417    0.592  
    0.574    0.113    -0.970 ];
A_4=[-0.646    -0.875    -0.997  
    -0.732    -0.993    -0.126  
    0.707    0.289    0.019 ];

Ai = [A_1 A_2 A_3 A_4];
