Discrete-Time Numeric Models
Create Discrete-Time Transfer Function Model
This example shows how to create a discrete-time transfer function model using
tf
.
Create the transfer function with a sample time of 0.1 s.
num = [1 0]; den = [1 -2 -6]; Ts = 0.1; G = tf(num,den,Ts)
num
and den
are the numerator and
denominator polynomial coefficients in descending powers of z.
G
is a tf
model object.
The sample time is stored in the Ts
property of
G
. Access the sample time Ts
, using dot
notation:
G.Ts
Other Model Types in Discrete Time Representations
Create discrete-time zpk
, ss
, and frd
models in a similar way to
discrete-time transfer functions, by appending a sample time to the input arguments.
For examples, see the reference pages for those commands.