Questions tagged [system-modeler]

Questions on Wolfram SystemModeler, an environment for the modeling of systems with mechanical, electrical, thermal, chemical, biological, and other components, as well as combinations of different types of components.

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Changing settings on revolute component to allow connection to damper component

Good day I am trying to change the settings of a revolute with a length constraint to be able to connect a damper as per the image below. I cannot find how to change this setting anywhere online. Any ...
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2answers
50 views

Connection between two MultiBody SystemModels generated with Mathematica

I am trying to connect a set of SystemModels that I generated programmatically in Mathematica. I am interested in MultiBody models and I haven't tried other types of models. I am failing gloriously ...
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1answer
36 views

Systemmodeler owner and other Mathematica owner [closed]

My daughter has Mathematica. I want to buy SystemModeler Wolfram. Can i use my daughter’s mathematica with my SystemModeler?
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1answer
67 views

How to install additional libraries in Wolfram language's SystemModel?

I have been using a command like the following to get models into Wolfram language: ...
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1answer
40 views

How would I save changes to a model in SystemModeler?

How would I save changes to a model in SystemModeler? The "File | Save" does not save any changes past the initial model creation. So far, the only way that I can save changes is to create a new ...
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1answer
129 views

How to deal with equations from SystemModeler in NDSolve

I have a working SystemModel derived from Wolfram System Modeler and I imported it into Mathematica. The model works, as I can derive the solutions in SystemModeler itself as well as with the ...
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1answer
95 views

Can Modelica.Electrical.Spice3 or SPICELib be used in Wolfram SystemModeler?

I would like to make use of the SPICE models that are available for COTS (Commercial Off-the-Shelf) Op-Amps in Wolfram SystemModeler. There are some libraries such as SPICELib and Modelica.Electrical....
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18 views

Measure event time (SystemModeler question)

How do I measure (and report to other parts of the system), the time that an event is true (in SystemModeler)? There is a built-in block, Timer, that measures the time since an event became true. I ...
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1answer
28 views

Parallel generation of SystemModel

I notices that it takes quite a long time to generate a lot of models. Therefore, it occures to me that maybe parallelization would help. However, the following example keeps evaluating and never ...
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1answer
56 views

Poor speed of ConnectSystemModelComponents and CreateSystemModel

I'm trying to use SystemModel to simulate a large air conditioning system, but my kernel crashes from time to time when I try to connect my custom models with each ...
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0answers
190 views

There seem to be severe issues with Mathematica 12.1 running System Modeler models and with WSM 12.1 itself on Windows 10

I am using Wolfram Mathematica 12.1 and the Wolfram System Modeler 12.1 on a Windows 10 (64 Bit) notebook. Pretty much exactly since yesterday (2020-04-10), I am experiencing severe and previously ...
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40 views

How to use an InterpolatingFunction inside CreateSystemModel

I would like to to construct an equation with CreateSystemModel, e.g. $\dot{y}(t) = f(x(t))$, where $f$ is an interpolated function. I tried the following code <...
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1answer
140 views

Do I need Mathematica use System Modeler?

I found a couple of interesting model examples that I would like to run in System Modeler. https://www.wolfram.com/system-modeler/examples/life-sciences/insulin-receptor-signaling.html Do I need to ...
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1answer
228 views

Mathematica NDSolve for DAE and System Modeling

I'm a student for HVAC engineering and I've been using Mathematica for my study (mostly differential-algebraic equation system or Finite-Element-Analysis) and my hobby project for years. I really ...
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1answer
101 views

How would I add noise to a voltage source in SystemModeler?

I have a simple circuit with a SawTooth voltage source in SystemModeler 12.0. How would I add a noise component to a sawtooth waveform? I have added a NormalNoise block named normalNoise1 to my ...
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64 views

Does SystemModeler have a spark gap among its analog electrical comonents?

I'm crafting a circuit to simulate, etc, and I can't find any spark gap component in its library. How could it be custom designed, or imported, if it's missing from the library? In the alternative, ...
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2answers
187 views

How to enter vector inputs in SystemModelSimulate?

A support case with the identification [CASE:4272760] was created. I am having some difficulties to provide vector inputs for a Modelica model using Mathematica. ...
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1answer
128 views

Why is a Boolean output not given as True/False by SystemModelSimulate?

Bug introduced in 11.3 and fixed in 12.1 I am a bit surprised that I am not getting a boolean output for the following simple Modelica model: ...
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88 views

Creating a prediction/distribution based on several years of data

So I have several years of data from a survey. For each year I've used FindDistribution and Predict to see if I can fit the data. Here's one example Where I used FindDistribution to get ...
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1answer
92 views

Making a table of results from SystemModelSimulate [closed]

I am trying to simulate a model in SystemModeler from Mathematica 11.3. I wish to simulate this model for various parameter values and make a table of the output data. To attempt this I do the ...
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1answer
225 views

How would I raise a number to a power in Modelica? [closed]

This is a very basic question that I cannot seem to find a solution to. The following line throws an error in Modelica: ...
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1answer
156 views

Can a variable be used as the parameter k in a Gain block?

I am trying to model a system where gain is variable. I have created a simple two block model to first investigate the possibility of using a variable as the gain parameter. If this works, I would ...
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1answer
152 views

Is it possible to call a Mathematica function from a SystemModeler component?

Is it possible to call Mathematica 11.3 functions from a SystemModeler 5.1 component? I see that Mathematica can run a SystemModeler simulation. Are there any examples of this? It would be very ...
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1answer
68 views

Can custom “operator records” be defined and used in Wolfram System Modeler (and the WL)?

From an answer to a Modelica-related question on SO I learned about the possibility to overload operators in Modelica by using spezialized class operator record. Looking into the Modelica specs for ...
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1answer
128 views

how do I link system modeler to Mathematica

I have a version of Mathematica 11.0.1 and it will not work with the latest system modeler, is there a way I can fix that
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1answer
219 views

How to plot a trajectory of Lorenz attractor system model (SystemModelSimulate - v11.3)

I'm using one of the system models provided with Mathematica 11.3. (I found it by evaluating SystemModelExamples[].) ...
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3answers
702 views

Is it possible to use SystemModeler as a Modelica IDE (to create custom Modelica components)?

Wolfram's SystemModeler provides access to a large amount of components from the standard Modelica language, as is mentioned on this page. It can also be extended with Modelica libraries built by ...
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1answer
1k views

In what way can M11.3's system modelling features be used by those who don't have SystemModeler?

Mathematica 11.3 includes some functionality from SystemModeler, but not the full SystemModeler environment. I assume that most people here are familiar with Mathematica, but not SystemModeler, or ...
4
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1answer
261 views

Systems-Modeler returns comple error code 2 when building

I've been trying to get Systems-Molder to work of a few weeks now for a school project. I can make the models fine however when I try to run the simulation I get the following build errors: Building "...
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1answer
104 views

SystemModeler Error: Could not read result file, missing data matrix, the file might be corrupt

I'm trying to run a Modelica code in SystemModeler on Windows: ...
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1answer
188 views

Is there a way to communicate wtih Modelica other than SystemModeler?

This is a full-featured, free (freedom and beer) interconnect between Mathematica and Matlab. Conversely, this is Wolfram's own commercial solution for connecting Modelica models to Mathematica. Is ...
5
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1answer
203 views

How to use FindFit to optimize parameters of a WSM model via WSMLink for a parametric curve

I have I-V (current-voltage) data which I am trying to use to calibrate a PV solar cell model in WSM using WSMLink from mathematica. I am using the FindFit function which simulates the model with each ...
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1answer
83 views

System Modeler 4 on Mac X El Capitan does not work

I have installed the Mac version of System Modeler 4 in a MacBook Pro with OS X El Capitan . Also the Coder has been installed version 7 . But the System modeler can not find the C ++ compiler not is ...
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1answer
181 views

Network Analysis Problems with SystemModeler

Is it possible to analyse network problems like shortest path, minimum spanning tree, maximum flow, travelling salesman etc. with SystemModeler? If so where cm I find tutorials and examples?
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1answer
120 views

ArenaLib and WSM [closed]

The WSM documentation states that Typical tools for such purposes would include ARENA, and there exists also a Modelica implementation of that tool and modeling methodology, called the ARENALib. ...
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2answers
223 views

Is it possible to add a node to a circuit model in SystemModeler?

I am putting together a basic electrical circuit model in Wolfram System Modeler. While the circuit does not technically need a common node, it makes the circuit easier to explain as branches may be ...
3
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1answer
187 views

SystemModeler join wires

I'm using SystemModeler and I'm trying to understand what is the equivalent for Simulink's Ctrl+drag to create a wire coming out of an existing wire. I am trying to make a wire come out of an existing ...
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1answer
185 views

WSMModelData[] can not find my model

I have something like this in my notebook (SystemModeler is not running): ...
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0answers
214 views

Creating an orrery

I am interested in creating an orrery, ideally with SystemModeler. I have been experimenting with the MultiBody library since that allows you to do animations. The most relevant example seems to be ...
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1answer
180 views

WSMModelData Error

I am getting this error message when I run simulation in Mathematica that makes iterations to a SystemModeler model. ...
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2answers
515 views

Change Temporary Directory

How to change the value of $TemporaryDirectory ? I need to change it because there is not enough space on the C drive and the calculation seems to stop after a while !
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1answer
270 views

Building an arch in SystemModeler

I'm trying to learn SystemModeler and struggling a little... Building on the chain pendulum example from Wolfram, I've happily made a chain with revolute joints with spring/dampeners connecting the ...
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0answers
93 views

Parameters for modelica booleanExpression?

In SystemModeler, left-hand side, Libraries > Modelica > Blocks > Examples > ShowLogicalSources, we see a diagram with several disconnected blocks: The ...
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1answer
260 views

Is it possible to build/simulate/extract data from a System Modeler model completely inside a notebook using the MathModelica language syntax?

See examples in: http://www.mathematica-journal.com/issue/v10i1/contents/MathModelicaPaper/MathModelicaPaper_2.html It seems to be ruled out by the statement (Chapter 2 intro): "The subset of the ...
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4answers
2k views

System Modeler can't find g++ in Mac OS X Mavericks

I've just purchased SystemModeler (Mac OS X Mavericks) but can't verify the g++ compiler path. I assume it's in the Xcode package but nothing I've tried seems to work, for example, Applications/...
4
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1answer
164 views

WSMSetValues function

I am trying to assign values to some model parameters using WSMSetValues function, however, it seems to be working only with values greater than 10^-4. Is this normal behavior or I am doing something ...
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2answers
7k views

What is Mathematica's equivalent to MATLAB's Simulink?

MATLAB has Simulink and Simscape, Maple has MapleSim and Scilab has Xcos. What is the equivalent product for Mathematica?
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2answers
913 views

Can Wolfram System Modeler models be published in CDFs?

Is it possible to publish or distribute Models generated with WSM in CDF format (to interested people that do not have Mathematica and/or WSM)
4
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1answer
588 views

cannot open WSMLink

I'm evaluating Wolfram SystemModeler and I want to explore its capabilities together with Mathematica. Unfortunately, I don't manage to get WSMLink working. In the notebook I'm using I typed ...
5
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1answer
382 views

Resolving reduced resolution issues in WSMLink

I have been attempting to evaluate Wolfram System Modeler (WSM) and it has not been going smoothly. It looks like some of the Modelica Models (combiTable1D for instance) supplied are not complete or ...