.Modelica_LinearSystems2.DiscreteZerosAndPoles.Import.fromFile

Information

Syntax

dzp = DiscreteZerosAndPoles.Import.fromFile(fileName)

Description

Reads and loads a discrete zeros-and-poles transfer function from a mat-file fileName. The file must contain the sample time Ts and either the set of variables n1, n2, d1, d2, and k with the associated first and second order polynomials or the variables p, z, and k with the poles and zeros, written in two column arrays with real and imaginary in the first and second column respectively. The variable k is the real gain in both cases.

Example

algorithm
  dzp:=Modelica_LinearSystems2.DiscreteZerosAndPoles.Import.fromFile(DataDir + "/dzp.mat");
//  zp = (q^2 + 2*q + 3)/(q + 2)/(q^2 + 2*q + 2)

Interface

encapsulated function fromFile
  import Modelica_LinearSystems2.ZerosAndPoles;
  import Modelica_LinearSystems2.DiscreteZerosAndPoles;
  import Modelica_LinearSystems2;
  import Modelica;
  import Modelica_LinearSystems2.DataDir;
  input String fileName = DataDir + "dzp.mat" "Name of the discrete zeros and poles data file" annotation(
    Dialog(loadSelector(filter = "MAT files (*.mat);; All files (*.*)", caption = "state space system data file")));
  output DiscreteZerosAndPoles dzp(n1 = fill(0, n1), n2 = fill(0, n2, 2), d1 = fill(0, d1), d2 = fill(0, d2, 2));
end fromFile;