Name
zeropen — zero pencil
Calling Sequence
[Z,U]=zeropen(Sl)
Parameters
- Sl
a linear system (syslin list in state-space form [A,B,C,D])
- Z
matrix pencil Z=s*E-A
- U
square orthogonal matrix
Description
Z = sE - F is the zero pencil of the linear system Sl with
matrices [A,B,C,D]. Utility function.
With U row compression of [B;D] i.e, U*[B;D]=[0;*]; one has:
U*[-sI+A |B; [ Z |0;
C |D] = [ * |*]
The zeros of Z are the zeros of Sl.