User`s guide

Table Of Contents

11-230

uses the DSP convention and creates

See also

filt for direct specification of discrete transfer functions using the

DSP convention.

Note that

tf stores data so that the numerator and denominator lengths are

made equal. Specifically,

tf stores the values

num = [0 1 1]; den = [1 2 3]

for g (the numerator is padded with zeros on the left) a nd the values

num = [1 1 0]; den = [1 2 3]

for h (the numerator is padded with zeros on the right).

Algorithm tf uses the MATLAB function poly to convert zero-pole-gain models, and the

functions

zero and pole to convert state-space models.

See Also filt Specify discrete tr ansfer functions in DSP format

frd Specify a frequency response data model

get Get properties of LTI models

set Set properties of LTI models

ss Specify state-space models or convert to state space

tfdata Retrieve transfer function data

zpk Specify zero-pole-gain models or convert to ZPK

1–

()

–

12z

1–

2–

---------------------------------------- zg z()==