tf2des - transfer function to descriptor

Calling Sequence

S=tf2des(G)

S=tf2des(G,flag)

Parameters

• G : linear system (syslin list) with possibly polynomial D matrix
• flag : character string "withD"
• S : list

Description

Transfer function to descriptor form: S=list('d',A,B,C,D,E)

  E*xdot = A*x+B*u
  y = C*x + D*u
   

Note that D=0 if the optional parameter flag="withD" is not given. Otherwise a maximal rank D matrix is returned in the fifth entry of the list S

Examples

s=poly(0,'s');
G=[1/(s-1),s;1,2/s^3];
S1=tf2des(G);des2tf(S1)
S2=tf2des(G,"withD");des2tf(S2)
 

See Also

pol2des  tf2ss  ss2des  des2tf