Function File: [a, b, c, d, e, tsam] = dssdata (sys)

Function File: [a, b, c, d, e, tsam] = dssdata (sys, [])

Access descriptor state-space model data. Argument sys is not limited to descriptor state-space models. If sys is not a descriptor state-space model, it is converted automatically.

Inputs

sys

Any type of LTI model.

[]

In case sys is not a dss model (descriptor matrix e empty), dssdata (sys, []) returns the empty element e = [] whereas dssdata (sys) returns the identity matrix e = eye (size (a)).

Outputs

a

State matrix (n-by-n).

b

Input matrix (n-by-m).

c

Measurement matrix (p-by-n).

d

Feedthrough matrix (p-by-m).

e

Descriptor matrix (n-by-n).

tsam

Sampling time in seconds. If sys is a continuous-time model, a zero is returned.

Package: control