Contents
% simulation of 2nd order filter in state-space representation with % respect to direct form II / normal form with l2 scaling of the % system and the states % lab4_4.m * mw * 02/21/2007
2nd order system
b = [1 2 1]; a = [1 -1.4 .74]; % numerator and denominator h = filter(b,a,[1 zeros(1,100)]); % impulse response b = b / sqrt(sum(h.^2)); % l2 scaling ssr = ssr_ABCD(b,a,'NF2'); % normal form
l2 scaling of states
T = [sqrt(1.5671) 0; 0 sqrt(2.2790)]; ssr = ssr_trans(ssr,T);
Impulse response
x = [1 zeros(1,20)]; [y,S,Sm] = ssr_filt_State(ssr,x);
Graphics - Impulse response of state variables
plot_State(Sm,ssr.form)
