www.pudn.com > MATLAB.rar > exa020804_zplane.m
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> exa020804_zplane.m, for example 2.8.4
> to test zplane.m and to obtain the pole-zero plot.
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clear;
b=[.001836,.007344,.011016,.007374,.001836];
a=[1,-3.0544,3.8291,-2.2925,.55075];
subplot(221);
zplane(b,a); > 求并画出所给系统的极零图，该系统为IIR系统；
b=[1 -1.7 1.53 -0.68];
a=1;
subplot(222);
zplane(b,a); > 求并画出第二个系统的极零图，该系统为FIR系统；