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x
w0=2*pi*2000;
wb=1;
[z,p,k]=cheb1ap(3,3);
[b,a]=zp2tf(z,p,k);
[num,den]=lp2bs(b,a,w0,wb);
bode(num,den);
>> w=linspace(1,3000,300)*2*pi;
H=freqs(num,den,w);
plot(w/(2*pi),abs(H));grid设计带阻滤波器。见附件1
当用双线性变换法离散时,
[b1,b2]=bilinear(num,den,8000);
Warning: Matrix is close to singular or badly scaled.
Results may be inaccurate. RCOND = 6.980122e-041.
> In bilinear at 89
Warning: Matrix is close to singular or badly scaled.
Results may be inaccurate. RCOND = 6.980122e-041.
> In bilinear at 90
请高手帮忙看看到底是什么地方错了阿?自己实在是想不明白阿 |
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