[z,p,k] = cktzpk(circuit)
calculates the zeros, poles, and gains for a linear circuit from a Simscape™ electrical diagram or subsystem or a circuit configuration object.
[z,p,k,inports,outports] = cktzpk(circuit)
lists in names of the input and output ports in addition to calculating the zeros, poles,
and gains.
Simscape electrical diagram or subsystem or a circuit configuration object for
which to calculate the zeros, poles, and gains, specified either as a schematic or as an
object. For more information, see cktconfig.
Specify optional pairs of arguments as
Name1=Value1,...,NameN=ValueN, where Name is
the argument name and Value is the corresponding value.
Name-value arguments must appear after other arguments, but the order of the
pairs does not matter.
Example: [z,p,k] = cktssmodel(circuit,BlockName='Power Train')
calculates the zeros, poles, and gains of the transfer function of the block Power
Train.
Name on the icon if the function builds a Simulink block, specified as a string.
Name of the block instance in the Simulink model, specified as a string.
Option to display the resulting plots of the function, specified as
true or false.
Device noise sources in the circuit, specified as an
n×6 cell array. The function uses resistors to
model the device noise sources. The cell array contains the following
information:
Column
Description
Name
The circuit element designator.
Enabled
Option to indicate if the noise source is active, specified as
true or false. Set the value
to true to indicate that the noise source is
active.
Noise coefficient
The RMS amplitude of the noise source. If empty, the function uses
Johnson/Nyquist noise value based on the value of the resistor.
Corner frequency
The frequency below which the flicker noise has a higher amplitude
than the white Gaussian noise. This value may equal zero to indicate an
absence of flicker noise.
Independent noise
Option to indicate if the device noise is correlated with other noise
sources, specified as true or
false. Set the value to true
to indicate the device noise is independent off other noise
sources.
Seed
An integer used to select the sequence of random samples. A value of
0 indicates an independent noise source. For
multiple device noise outputs, set the value to the same non-zero
integer value for all noise sources that share the same source.
Zeros of the transfer function, returned as a column vector for SISO (single input
single output) circuits or a cell array of column vectors for MIMO (multiple inputs
multiple outputs) circuits.
Poles of the transfer function, returned as a column vector.
Gains of the transfer function, returned as a matrix.
Names of the input ports, returned as a cell array.
Names of the output ports, returned as a cell array.
