matlab_ pzmap的用法

num1 = [1, 12, 32]

den1 = [1, 24, 144, 0, 0]

[p1, z1] = pzmap(num1, den1)

figure, 

rlocus(num1, den1)

tfGs=tf(num1,den1)

zpGs=zpk(tfGs)

[z,p,k]=zpkdata(zpGs,'v')

 

 exer_1

num1 =

     1    12    32

den1 =

     1    24   144     0     0

p1 =

   0.0000 + 0.0000i

   0.0000 + 0.0000i

 -12.0000 + 0.0000i

 -12.0000 - 0.0000i

z1 =

    -8

    -4

tfGs =

 

     s^2 + 12 s + 32

  ----------------------

  s^4 + 24 s^3 + 144 s^2

 

Continuous-time transfer function.

zpGs =

 

  (s+8) (s+4)

  ------------

  s^2 (s+12)^2

 

Continuous-time zero/pole/gain model.

z =

    -8

    -4

p =

   0.0000 + 0.0000i

   0.0000 + 0.0000i

 -12.0000 + 0.0000i

 -12.0000 - 0.0000i

k =

     1