Van der Pol Oscillator (JModelica) - Revision history

FelixMueller at 13:58, 19 January 2016

2016-01-19T13:58:50Z

← Older revision		Revision as of 13:58, 19 January 2016
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	This page contains the source code to solve the Van der Pol Oscillator problem with JModelica. The automatic differentiation tool CasADI and the solver IPOPT were used to solve the problem.		This page contains the source code to solve the [[Van der Pol Oscillator]] problem with JModelica. The automatic differentiation tool CasADI and the solver IPOPT were used to solve the problem.

	Model file (VDP_Opt.mop)		Model file (VDP_Opt.mop)

MadeleineSchroeter at 19:57, 12 January 2016

2016-01-12T19:57:01Z

← Older revision		Revision as of 19:57, 12 January 2016
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	Model file (VDP_Opt.mop)		Model file (VDP_Opt.mop)
	<source lang="~~Python~~">		<source lang="Optimica">
	//-------------------------------------------------------------------------		//-------------------------------------------------------------------------
	//Van der Pol Oscillator with direct collocation using JModelica		//Van der Pol Oscillator with direct collocation using JModelica

MadeleineSchroeter at 19:56, 12 January 2016

2016-01-12T19:56:11Z

← Older revision		Revision as of 19:56, 12 January 2016
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	This page contains the source code to solve the Van der Pol Oscillator problem with JModelica. The automatic differentiation tool CasADI and the solver IPOPT were used to solve the problem.		This page contains the source code to solve the Van der Pol Oscillator problem with JModelica. The automatic differentiation tool CasADI and the solver IPOPT were used to solve the problem.

			Model file (VDP_Opt.mop)
	<source lang="Python">		<source lang="Python">
	//-------------------------------------------------------------------------		//-------------------------------------------------------------------------
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	end VDP_Opt;		end VDP_Opt;

			</source>

			Run file
			<source lang ="Python">
			#Import the function for transfering a model to CasADiInterface
			from pyjmi import transfer_optimization_problem

			op=transfer_optimization_problem("VDP_Opt", "VDP_Opt.mop")

			res=op.optimize()

	</source>		</source>

	[[Category:JModelica]]		[[Category:JModelica]]

MadeleineSchroeter at 13:29, 12 January 2016

2016-01-12T13:29:41Z

← Older revision		Revision as of 13:29, 12 January 2016
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	<source lang="Python">		<source lang="Python">
	#-------------------------------------------------------------------------		//-------------------------------------------------------------------------
	#Van der Pol Oscillator with direct collocation using JModelica		//Van der Pol Oscillator with direct collocation using JModelica
	#(c) Madeleine Schroter		//(c) Madeleine Schroter
	#--------------------------------------------------------------------------		//--------------------------------------------------------------------------

	optimization VDP_Opt(objectiveIntegrand = y^2+x^2+u^2, startTime = 0, finalTime = 20)		optimization VDP_Opt(objectiveIntegrand = y^2+x^2+u^2, startTime = 0, finalTime = 20)

MadeleineSchroeter at 13:18, 12 January 2016

2016-01-12T13:18:27Z

← Older revision		Revision as of 13:18, 12 January 2016
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	</source>		</source>

			[[Category:JModelica]]

MadeleineSchroeter: Created page with "This page contains the source code to solve the Van der Pol Oscillator problem with JModelica. The automatic differentiation tool CasADI and the solver IPOPT were used to solv..."

2016-01-12T12:53:14Z

Created page with "This page contains the source code to solve the Van der Pol Oscillator problem with JModelica. The automatic differentiation tool CasADI and the solver IPOPT were used to solv..."

New page

This page contains the source code to solve the Van der Pol Oscillator problem with JModelica. The automatic differentiation tool CasADI and the solver IPOPT were used to solve the problem.

<source lang="Python">
#-------------------------------------------------------------------------
#Van der Pol Oscillator with direct collocation using JModelica
#(c) Madeleine Schroter
#--------------------------------------------------------------------------

optimization VDP_Opt(objectiveIntegrand = y^2+x^2+u^2, startTime = 0, finalTime = 20)

//The states
Real x(start=1, fixed=true); //position coordinate
Real y(start=0, fixed=true);

//The control signal
input Real u; //damping of the oscillation

equation
der(y) = (1-x^2) * y - x +u;
der(x) = y;

constraint
u<=0.75;

end VDP_Opt;

</source>