User Portlet
| Discussions |
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| No, I didn't write the code. So which function writes a temporary simulation files ? I guess they are back-up files ! .. I will give you the extension when I run the simulation again. |
| Greetings to all, I'm trying to model an actuator. When I use the following line of code to define the limits of the extended and retracted length of the actuator, I get the following graph: s_rel=smooth(0, if strokeUpperLimit then l_cyl... |
| Thanks Frank. But this is a Mathematica code. I am asking about Modelica code (the language on which SystemModeler is based) ! Anyway, I used this function: function int "Integrate variable with respect to time" extends... |
| What are the possible reasons to get this error when validating a component ? I am trying to develop a library and when I define the connector in a component I get this error. However, the same exact line of code is working fine in another component.... |
| Hi, can someone explain to me what are the possible reasons for getting the following error and what can I do about it ? > Error: Model is structurally singular in equation |
| I am trying to model simple hydraulic components such as a check valve. How to make the flow runs in one direction ? Will a simple *if statement* as the one shown below work or do you recommend another approach ? m_flow = port_b.m_flow -... |
| Thanks Sean for your reply. I am asking about the Modelica language. The code you are showing is Mathematica code, and I don't think it can be used inside SystemModeler. |
| I made one component and the validation shows that it has 3 equations and 2 variables. But the *equation* section only has 2 equations. Do you have any idea how can I find the third one ? It is a mass flow source component and here is the code: ... |
| I tried to read about Stream connectors and couldn't really understand them. Can you tell me when is it better to use them ? What is the main difference between them and normal flow and non-flow connectors ? |
| I think I found the mistake. I didn't make the annotation for the FluidPort. There's a difference between the annotation for the whole interface and for the ports themselves. Each port should have a separate annotation like the code below. I copied... |