www.gusucode.com > control 案例程序 matlab源码代码 > control/BalancedRealizationOfUnstableSystemExample.m

    %% Balanced Realization of Unstable System
%%
% Create an unstable system.
sys = tf(1,[1 0 -1])
%%
% Apply |balreal| to create a balanced-gramian realization.
[sysbal,g] = balreal(sys)
%%
% The unstable pole shows up as |Inf| in the vector |g|.