复杂传递函数画bode图一直出错,求教!。
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果博东方公司网址【微8785092】
on 23 May 2023
Answered: 果博东方开户经理【微8785092】
on 23 May 2023
问题简述:要画bode图的传递函数由不同的多项式G1、G2、G3表示,-G2/(G1*s^2+G2),但是一直出错
代码如下:
% 参数设置
f_w0 = 500*1;
f_wc = 50*1;
w0 = f_w0 * 2 * pi;
wc = f_wc * 2 *pi;
b0=3*w0;
b1=3*w0*w0;
b2=w0*w0*w0;
kp=wc*wc;
kd=2*wc;
Td=0.005;
r=0.5;
% 传递函数
lamda=[1 b0 b1 b2];
s=tf('s');
G1=s^3+(b0+kd)*s^2+(b1+kd*b0+kp)*s;
G2=(kp+s*kd)*lamda-(kd*s^4+(kd*b0+kp)*s^3-b2*s^2);
G3=lamda*kp;
ntf=-G2/(G1*s^2+G2);
bode(ntf)
运行之后,在‘ntf=-G2/(G1*s^2+G2);’这一句出现‘错误使用 / (line 65) In "SYS1/SYS2", the model SYS2 must have the same number of inputs as outputs.’
这种情况有人遇见过吗?求解答,或者有没有其他可以实现复杂传函求bode图的方法??

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