Wolfram SystemModeler, developed by Wolfram MathCore, is a platform for engineering as well as life science modeling and simulation based on the Modelica language.
Questions tagged [systemmodeler]
36 questions
1
vote
3 answers
Dynamic change of coordinates for body position in Modelica MultiBody Library
I'm fairly new to Modelica, just started a few months ago due to a project I've been working on. Mostly doing work with multibody mechanical systems using the MultiBody library included in the standard Modelica distribution.
I need to change a body…
Guillermo Oliver
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1
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0 answers
How to work with DESLib in Wolfram SystemModeler 4.1
As a newbie in System Modeler 4.1 I am interested in queuing systems and found the DESLib, especially the ArenaLib. Unfortunately DESLib 1.7 seems not to work within this environment (version problem?).
Does anyone know how to download, install and…
Volker
- 11
- 2
1
vote
1 answer
Limit a variable in Modelica
I'm trying to model a simple actuator. When I use the following line of code to define the limits of the extended and retracted length of the actuator, the results is such that the s_rel is limited but the free flange is moving…
Mohamed Ibrahim
- 11
- 2
0
votes
2 answers
Gap GUI and code configuration for parametrised packages?
It is very practical to parametrise packages to improve reusability of code and a central theme of Modelica. The language support since long time back to also use types like packages and models as parameters for packages. The concept is sometimes…
janpeter
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1 answer
The process of solving DAE in Dymola
I am trying to understand the process of solving DAEs in Dymola. According to Chapter 13.8 of Dymola's help document, Dymola would first use an index reduction algorithm to transform the original DAE into ODE, then get a BLT form after partitioning…
Jack
- 1,094
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Including a causal relation in a Modelica simulation leads to translation Error while flattening model
I want to simulate a controller for a mass-spring model which works based on energy:
model model
//parameters
parameter Real m = 1;
parameter Real k = 1;
parameter Real Fmax = 3;
parameter Real x0 = 1;
parameter Real x1 = 2;
…
Foad S. Farimani
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