des2ss(1)

NAME
des2ss - descriptor to state-space

CALLING SEQUENCE
[Sl]=des2ss(A,B,C,D,E [,tol])
[Sl]=des2ss(Des)

PARAMETERS

A,B,C,D,E
    : real matrices of appropriate dimensions

Des : list

Sl  : syslin list

tol : real parameter (threshold) (default value 100*%eps).

DESCRIPTION
Descriptor to state-space transform.

Sl=des2ss(A,B,C,D,E) returns a linear system Sl equivalent to the descriptor system (E,A,B,C,D).

For index one (E,A) pencil, explicit formula is used and for higher index pencils rowshuff is used.

Sl=des2ss(Des) with Des=list('des',A,B,C,0,E) returns a linear system Sl in state-space form with possibly a polynomial D matrix.

Note that now D is set to 0 here. A generalized Leverrier is used.

SEE ALSO
des2tf, glever, rowshuff