.Modelica_LinearSystems2.DiscreteZerosAndPoles.Analysis.rampResponse

Information

Syntax

(y, t, x)=DiscreteZerosAndPoles.Analysis.rampResponse(ss, tSpan, x0)

Description

Function rampResponse calculates the time response of a DiscreteZerosAndPoles transfer function for ramp input u = t. The system is transformed to DiscreteStateSpace state space system and, starting at x(t=0)=0 and y(t=0)=C*x0 + D*u0, the outputs y and x are calculated for each time step t=k*dt.

DiscreteZerosAndPoles.Analysis.rampResponse(dzp, tSpan)

gives the same result as

DiscreteZerosAndPoles.Analysis.timeResponse(dzp, tSpan, response=Types.TimeResponse.Ramp, x0=fill(0,DiscreteZerosAndPoles.Analysis.denominatorDegree(dzp))).

Example

  Modelica_LinearSystems2.DiscreteZerosAndPoles dzp=dzp=1/(q^2 + q + 1)
  dzp.Ts=0.1;

  Real tSpan= 0.4;

  Real y[5,1,1];
  Real t[5];
  Real x[5,1,1]

algorithm
  (y,t,x):=Modelica_LinearSystems2.DiscreteZerosAndPoles.Analysis.rampResponse(dzp,tSpan);
//  y[:,1,1] = {0, 0, 0, 0.1, 0.1}
//         t={0, 0.1, 0.2, 0.3, 0.4}
//  x[:,1,1 = {0, 0, 0, 0.3, 0.3}

See also

DiscreteZerosAndPoles.Analysis.timeResponse

Interface

encapsulated function rampResponse
  import Modelica;
  import Modelica_LinearSystems2;
  import Modelica_LinearSystems2.DiscreteZerosAndPoles;
  import Modelica_LinearSystems2.DiscreteStateSpace;
  extends Modelica_LinearSystems2.Internal.timeResponseMask_zp_discrete;
end rampResponse;