Van der Pol Model

This example describes a Van der Pol oscillator. Notice that here the keyword
model is used instead of class with the same meaning. This example contains declarations of two state variables x and y, both of type Real and a parameter constant lambda, which is a so-called simulation parameter. The keyword parameter specifies that the variable is constant during a simulation run, but can have its value initialized before a run, or between runs. Finally, there is an equation section starting with the keyword equation, containing two mutually dependent equations that define the dynamics of the model.

1 Simulation of Van der Pol

To illustrate the behavior of the model, we give a command to simulate the Van der Pol oscillator during 25 seconds starting at time 0.

Perform a parametric plot: