Specifications

set
16-191
Remark For discrete-time transfer functions, the convention used to represent the
numerator anddenominatordependson the choice of variable (see the
tf entry
for details). Like
tf, the syntax for set changes to remain consistent with the
choice of variable. For example, if the
Variable property is set to 'z' (the
default),
set(h,'num',[1 2],'den',[1 3 4])
produces the transfer function
Table 16-20: ZPK Model Properties
Property Name Admissible Property Values
z, p •Vectors of zeros and poles (either real-valued or complex conjugate pairs of
them)inSISOcase
• -by- cell arrays of vectors (entries are real-valued or in complex
conjugate pairs) in MIMO case, for example,
z = {[],[-1 0]} for a model
with two inputs and one output
• -by- -by- -by- -by- -dimensional cell arrays for MIMO LTI
arrays
Variable
•String 's' (default) or 'p' for continuous-time systems
•String
'z' (default), 'q',or'z^-1' for discrete-time systems
N
y
N
u
N
y
N
u
S
1
…
S
K
Table 16-21: FRD Model Properties
Property Name Admissible Property Values
Frequency
Real-valued vector of length -by-1, where is the number of
frequencies
Response
• -by- -by- -dimensionalarrayofcomplexdata forsingleLTImodels
• -by- -by--by- -by- -by- -dimensional array for LTI arrays
Units
String 'rad/s' (default), or 'Hz'
N
f
N
f
N
y
N
u
N
f
N
y
N
u
N
f
S
1
…
S
K