Scilab Function

ss2tf - conversion from state-space to transfer function

Calling Sequence

[h]=ss2tf(sl)
[Ds,NUM,chi]=ss2tf(sl)
[h]=ss2tf(sl,"b")
[Ds,NUM,chi]=ss2tf(sl,"b")
[h]=ss2tf(sl,rmax)
[Ds,NUM,chi]=ss2tf(sl,rmax)

Parameters

Description

Called with three outputs [Ds,NUM,chi]=ss2tf(sl) returns the numerator polynomial matrix NUM, the characteristic polynomial chi and the polynomial part Ds separately i.e.:

h=NUM/chi + Ds
   

Method:

One uses the characteristic polynomial and det(A+Eij)=det(A)+C(i,j) where C is the adjugate matrix of A.

With rmax or "b" argument uses a block diagonalization of sl.A matrix and applies "Leverrier" algorithm on blocks. If given, rmax controls the conditionning (see bdiag).

Examples

See Also