20.假設控制系統轉移函數為
2
1 2 3
32
1 2 3
() ss Gs
s s s
  
  


  
，若以狀態矩陣表示，則下列何者為可控制典型式(Controllable
Canonical Form)？
(A)
3 2 1
0 1 0 0
X(t) 0 0 1 X(t) 0 U(t)
   1
   
        
          
, Y(t) X(t)         1 2 3 
(B)
3 2 1
0 1 0 0
X(t) 0 0 1 X(t) 0 U(t)
   1
   
        
       
, Y(t) X(t)    3 2 1 
(C)
3 2 1
0 1 0 0
X(t) 0 0 1 X(t) 0 U(t)
   1
   
        
          
, Y(t) X(t)    3 2 1 
(D)
1
2
3
0 0 1
X(t) 1 0 X(t) 0 U(t)
0 1 0



    
          
        
, Y(t) X(t)    3 2 1 