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scilab 2.6-4
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abcd             Scilab Group             Scilab Function              abcd
NAME
   abcd - state-space matrices
  
CALLING SEQUENCE
 [A,B,C,D]=abcd(sl)
PARAMETERS
 sl       : linear system (syslin list) in state-space or transfer form
          
 A,B,C,D  : real matrices of appropriate dimensions
          
DESCRIPTION
   returns the A,B,C,D  matrices from a linear system Sl.
  
   Utility function. For transfer matrices Sl is converted into state-space
  form by tf2ss.
  
   The matrices A,B,C,D are the elements 2 to 5 of the syslin list Sl, i.e.
  [A,B,C,D] = Sl(2:5) .
  
EXAMPLE
 A=diag([1,2,3]);B=[1;1;1];C=[2,2,2];
 sys=syslin('c',A,B,C);
 sys("A")
 sys("C")
 [A1,B1,C1,D1]=abcd(sys);
 A1
 systf=ss2tf(sys);
 [a,b,c,d]=abcd(systf)
 spec(a)
 c*b-C*B
 c*a*b-C*A*B
SEE ALSO
   syslin, ssrand