Tutorial: Advanced System Dynamics Modelling - Revision history

Teemu Lempinen: Is output location changed from additional information to equation tab

2013-12-03T09:05:26Z

Is output location changed from additional information to equation tab

← Older revision		Revision as of 09:05, 3 December 2013
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	Is Output		Is Output

	Variables can be set as output by selecting Is Output option from ~~Additional information~~ tab ~~of the variable~~.		Variables can be set as output by selecting Is Output option from the Equation tab.

	<br style="clear: both" />		<br style="clear: both" />

2012-10-12T11:12:37Z

Adding modules

← Older revision		Revision as of 11:12, 12 October 2012
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	When all the connections are made, you can simulate the model again. Now you have model with two work modules.		When all the connections are made, you can simulate the model again. Now you have model with two work modules. Select variables from both modules in model browser to display them in trend view.

	[[File:SecondSimulation.png]]		[[File:SecondSimulation.png]]

2012-08-27T07:23:33Z

← Older revision		Revision as of 07:23, 27 August 2012
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	In this tutorial, we are going to bild a work model with two projects and shared workforce. Both the workforce and a separate project (work) are going to be created as modules, so they can be reused several times. Actually the model doesn't limit the number of projects at all~~. We are also going to create an operating interface for the finished model~~.		In this tutorial, we are going to bild a work model with two projects and shared workforce. Both the workforce and a separate project (work) are going to be created as modules, so they can be reused several times. Actually the model doesn't limit the number of projects at all.

	===Creating model and modules===		===Creating model and modules===
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	<!---		<!---
			Operating interfaces not supported right now
	===Creating an Operating Interface===		===Creating an Operating Interface===

2012-08-27T07:22:55Z

Creating an Operating Interface

← Older revision		Revision as of 07:22, 27 August 2012
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			<!---
	===Creating an Operating Interface===		===Creating an Operating Interface===

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			-->


	[[Category:Tutorials]]		[[Category:Tutorials]]

2011-05-23T06:43:15Z

Workforce module

2010-11-09T14:59:25Z

Work module

← Older revision		Revision as of 14:59, 9 November 2010
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	= (xidz(WorkDone, ProjectWorkAmount, 0.0) - ProjectIsReady) / 0.08		= (xidz(WorkDone, ProjectWorkAmount, 0.0) - ProjectIsReady) / 0.08

	xidz is short for function X if devided by zero.		xidz is short for function X if devided by zero. This means that the simulation calculates ''WorkDone / ProjectWorkAmount''. If ProjectWorkAmount is zero, the result is the third argument ''0.0''.

	[[File:ProjectWorkAmount.png\|right\|frame\|ProjectWorkAmount input variable]]		[[File:ProjectWorkAmount.png\|right\|frame\|ProjectWorkAmount input variable]]

2010-10-12T07:01:59Z

Adding modules

← Older revision		Revision as of 07:01, 12 October 2010
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	Work2CompletionTime<br />		Work2CompletionTime<br />
	~~Type: Parameter<br />~~
	= 13		= 13

	Work2Amount<br />		Work2Amount<br />
	~~Type: Parameter<br />~~
	= 800		= 800

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	= RequiredWorkingSpeed1 + RequiredWorkingSpeed2		= RequiredWorkingSpeed1 + RequiredWorkingSpeed2

	~~Make the~~ connections shown in the picture and connect the inputs and outputs to the modules.		Update connections to match connections shown in the picture and connect the inputs and outputs to the modules.

	Workforce<br />		Workforce<br />
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	<br style="clear: both" />		<br style="clear: both" />


	===Creating an Operating Interface===		===Creating an Operating Interface===

2010-10-12T06:57:49Z

Simulating the model

← Older revision		Revision as of 06:57, 12 October 2010
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	When the progress indicator disappears, the simulation is complete.		When the progress indicator disappears, the simulation is complete.

	If the Console view pops up and shows an error "Error: Too few equations, underdetermined system. The model has X equation(s) and Y variable(s)", the simulation has failed. The reason might be that you forgot to assign an equation to some variable. See through all the variables, write the missing equation and simulate again.		If the Console view pops up and shows an error "Error: Too few equations, underdetermined system. The model has X equation(s) and Y variable(s)", the simulation has failed. The reason might be that you forgot to assign an equation to some variable or some connection in modules. See through all the variables, write the missing equation and simulate again.

	After the simulation is succesfully run, you can select a variable and see its simulation results in the trend view. For example WorkDone variable in Work1 module will give the following graph.		After the simulation is succesfully run, you can select a variable and see its simulation results in the trend view. For example WorkDone variable in Work1 module will give the following graph.

2010-10-12T06:57:08Z

Connecting modules

← Older revision		Revision as of 06:57, 12 October 2010
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	<br style="clear: both" />		<br style="clear: both" />

	In Outputs tab, make the only possible connection.		In Outputs tab, make the only possible connection: from RequiredWorkingSpeed to RequiredWorkingSpeed1.

	Workforce module has only one input and one output. Create the only possible ~~connection~~: ~~from RequiredWorkingSpeed to~~ RequiredWorkingSpeed1.		Workforce module has only one input and one output. Create the only possible connections:<br />
			(Inputs) RequiredWorkingSpeedInput -> RequiredWorkingSpeed1<br />
			(Outputs) PossibleWorkingSpeed -> TotalPossibleWorkingSpeed

	Now your model is ready for simulation!		Now your model is ready for simulation!

2010-10-12T06:55:19Z

Simulating the model

← Older revision		Revision as of 06:55, 12 October 2010
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	When the progress indicator disappears, the simulation is complete.		When the progress indicator disappears, the simulation is complete.

	~~Now~~ you can select a variable and see its simulation results in the trend view. For example WorkDone variable in Work1 module will give the following graph.		If the Console view pops up and shows an error "Error: Too few equations, underdetermined system. The model has X equation(s) and Y variable(s)", the simulation has failed. The reason might be that you forgot to assign an equation to some variable. See through all the variables, write the missing equation and simulate again.

			After the simulation is succesfully run, you can select a variable and see its simulation results in the trend view. For example WorkDone variable in Work1 module will give the following graph.

	[[File:FirstSimulation.png]]		[[File:FirstSimulation.png]]

	<br style="clear: both" />		<br style="clear: both" />


	===Adding modules===		===Adding modules===