% We solve the same problem as in ex_2_11.m using a different form % of the considered uncertain object. This example illustrates the fact % that the size of the block Delta is equal to the number of times % the uncertain parameters appear in the used formula. % Elementary LFR-objects are created lfrs Int d1 d3 sys2 = d1*[Int d1*d3]*[1 1;0 1]*[d1*Int ; d3]; % Alternative form (of ex_2_11.m) sys1 = d1^2*Int^2 + d1*d3*Int + d1^2*d3^2; % We can check the size size(sys1) size(sys2) % The Delta matrix is now 5-by-5 (sys2) instead of 8-by-8 (sys1). % Using the function distlfr we can check that we have computed % equivalent objects: distlfr(sys1,sys2) % The distance should be zero.