Control Systems Engineering by Nise Solution Manual

28 Chapter 2: Modeling in the Frequency Domain


[ [

(6*s^2+12*s+5)/(2+7*s+6*s^2), -1/(2+3*s)] -1/(2+3*s), (3/5*s^2+23/20*s+3/2)/(2+3*s)]

ans = G(s) via Nodal Equations 2 3 15 s + 12 s + 5 + 6 s 4 -------------------------3 2 24 s + 78 s + 120 s + 65

21.

a.

Z s  x   

Z s    +;8D89AD8






  s

  s


E 1  E  

 1 E  E

b.







E  

 E 2 E  1 E  









E 
  E  

2 E  




+;8D89AD8


E  E
1  E  

 1 E  

1 E  





22.

a. 1 E 







2  E  1 E  





2  E +;8D89AD8



E 

1 1


 E  

E 1