den1=[1 3 2]; num2=1;
den2=[1 3 0];
[num,den]=series(num1,den1,num2,den2);%系统串联; printsys(num,den);
[num,den]=parallel(num1,den1,num2,den2);%系统并联; printsys(num,den); num/den =
1 -------------------------- s^4 + 6 s^3 + 11 s^2 + 6 s 2-4
方法一:a=[0 1;-2,-3];
b=[1;2]; c=[3 0]; d=0;
p=[ 1 1;1 -1]; a=p*a*inv(p) b=p*b
c=c*inv(p) d=0
方法二:a=[0 1;-2,-3];
b=[1;2]; c=[3 0]; d=0;
p=[ 1 1;1 -1];
[a b c d]=ss2ss(a,b,c,d,p)
a =-2 0 3 -1 b =3 -1
c = 1.5000 1.5000 d =0
2-5
g=[0 1;1 3]; h=[0;1]; c=[1 1]; d=0; t=0.01;
[z,p,k]=ss2zp(g,h,c,d,1); sys=zpk(z,p,k,t);
num/den =
2 s^2 + 6 s + 2 -------------------------- s^4 + 6 s^3 + 11 s^2 + 6 s
sys1=d2d(sys,0.01) Zero/pole/gain: (z+1) -------------------- (z+0.3028) (z-3.303) 2-6
num=[2,1,2];
den=[1, 6,11,6];
[z,p,k]=tf2zp(num,den); [g,h,c,d]=zp2ss(z,p,k) g =
-1.0000 0 0
1.0000 -5.0000 -2.4495 0 2.4495 0 h =
1
0 0
C =2.0000 -9.0000 -4.0825 d =0
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