画伯德图及相位、幅值裕度

 

 

 s域：

无滞后：

num=[122.0501]

den=[0.8190 1]

g=tf(num,den);

margin(g);

grid on;

有滞后：

>> num=[106.9389];

>> den=[0.176 1];

>> g=tf(num,den,'iodelay',0.088)

                            106.9

  exp(-0.088*s) * -----------

                         0.176 s + 1

Continuous-time transfer function.

>> margin(g);

>> grid on;

z域：

Ts=0.1

dnum=[1]

dden=[1,-1]

Zk=tf(dnum,dden,Ts)

margin(Zk)

 

 

转载于:https://www.cnblogs.com/litthorse/p/8946806.html