Difference between revisions of "OpenModelica/C2/OpenModelica-Connectors/English-timed"
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| | Watch the video available at the following link.[http://spoken-tutorial.org/ http://spoken-tutorial.org/]It summarizes the '''Spoken Tutorial''' project. | | | Watch the video available at the following link.[http://spoken-tutorial.org/ http://spoken-tutorial.org/]It summarizes the '''Spoken Tutorial''' project. | ||
Revision as of 11:11, 19 March 2018
| Time | Narration |
| 00:01 | Welcome to this spoken tutorial on OpenModelica Connectors. |
| 00:06 | In this tutorial, we will learn to: Create a new class , Open an existing class , Connect, different classes , Build a model and Simulate the model. |
| 00:22 | To record this tutorial, I am using OpenModelica version 1.11.0 and Ubuntu Linux OS 14.04 |
| 00:34 | But, the process demonstrated in this tutorial is identical in other OS such as- Windows, Mac OS X or FOSSEE OS on ARM . |
| 00:47 | To practice this tutorial, you need to know about OMEdit. The Prerequisite tutorials are mentioned on our website. |
| 00:57 | RLC_Circuit file used in the tutorial is provided as a code file on our site. |
| 01:04 | Download the files from Code Files link. |
| 01:09 | I have already opened the OMEdit window. |
| 01:13 | Now we will discuss how to create a new model. |
| 01:18 | First we will create a new class. So go to the File menu and select New Modelica Class. |
| 01:27 | Create New Modelica Class window appears. |
| 01:31 | In the Name field, enter the name of the class which we want to create. |
| 01:37 | I will enter the name as Sample. |
| 01:41 | In the Specialization field, select the type of class you wish to create. I will choose Class. |
| 01:50 | Then click on OK. |
| 01:53 | A new class will be created with the given name. |
| 01:57 | We will learn more about classes in the upcoming tutorials. |
| 02:02 | Now we will save this class. |
| 02:05 | For this, right-click on Sample class and click on Save. |
| 02:11 | Choose an appropriate location to save this file. |
| 02:15 | Let's close the Sample file. Right-click on Sample and select Unload. |
| 02:22 | Click Yes in the confirmation dialog box that appears. |
| 02:27 | Now we shall learn how to open an existing class. |
| 02:32 | To open a class, go to the File menu. Then click on Open Model/Library File. |
| 02:40 | Select the desired file you wish to open. |
| 02:44 | I will choose RLC_Circuit.mo file downloaded earlier from Code files. |
| 02:52 | Click on the Open button. |
| 02:55 | Now we will learn about Connectors. |
| 02:59 | A Connector is a way for one model to exchange information with another model. |
| 03:07 | Use of Connectors: |
| 03:09 | Connectors are used in: Connections , Communication ,Coupling between component and outside world. |
| 03:17 | Next, we will learn to connect classes. |
| 03:20 | For this, I will use RLC_Circuit file which we opened earlier. |
| 03:28 | RLC_Circuit is a Modelica package containing different classes. |
| 03:34 | Let’s expand the package. |
| 03:37 | Here we can see various classes,' namely, Ground, VoltageSource , Resistor , Capacitor and Inductor |
| 03:49 | and also a connector named Pin |
| 03:53 | We will learn more about classes and connectors in upcoming tutorials in this series. |
| 04:00 | This package also contains a circuit class. |
| 04:05 | Double-click on the circuit file and go to the Text view. |
| 04:11 | Here we can see that the class does not contain any code. |
| 04:17 | Now go to Diagram View. |
| 04:20 | Let us place all the blocks/components in the grid area.Then we will connect them. |
| 04:29 | Click on Resistor and drag and drop it into the grid space. |
| 04:35 | We get a message, Enter Component Name. |
| 04:38 | In the Name field, enter the component name as R and click OK. |
| 04:47 | Click on Inductor Drag and drop it into the grid space and place it next to the Resistor |
| 04:56 | Enter the component name as L and click OK. |
| 05:02 | Click on Capacitor Drag and drop it into the grid space and place it next to the Inductor |
| 05:10 | Enter the component name as C and click OK. |
| 05:15 | Next, click on VoltageSource and drag and drop it into the grid space. |
| 05:22 | Place it above the R, L and C which are placed in series. |
| 05:28 | Enter the component name as ACVoltage. |
| 05:32 | Note that, please do not put any space in the component name field. |
| 05:38 | It will give translation error at the time of simulation. Now click OK. |
| 05:45 | Next, click on Ground and drag and drop it into the grid space. |
| 05:52 | Place it below the R, L and C components in series. |
| 05:57 | Enter the component name as G and click OK. |
| 06:02 | Now we have all the required components to construct the RLC Circuit in series. |
| 06:09 | Let's connect these components. |
| 06:12 | Hover the mouse to the left part of component. |
| 06:16 | A pop up RLC underscore Circuit dot pin p appears. |
| 06:22 | This represents positive pin. |
| 06:25 | Similarly, the right part of component shows a pop up as RLC underscore Circuit dot pin n. |
| 06:34 | This represents negative pin. |
| 06:37 | Place the cursor over the negative pin of the Resistor. |
| 06:42 | We can see a '+' sign when the cursor is placed over n pin. |
| 06:48 | Click on the pin. |
| 06:49 | Hold and drag it to the p pin of the Inductor. |
| 06:54 | Click on Inductor's p pin and then release the cursor. |
| 07:01 | Next, we will connect n pin of the Inductor with the p pin of the Capacitor. |
| 07:08 | Click on the n pin of the Inductor. |
| 07:11 | Hold and drag it to the p pin of the Capacitor. |
| 07:15 | Click on the p pin of the Capacitor. |
| 07:20 | Now we have connected the Resistor, Inductor and Capacitor in series. |
| 07:28 | Next step is to provide the VoltageSource. |
| 07:32 | Click on the p pin of the Resistor. |
| 07:36 | Hold and drag it to the p pin of the VoltageSource. |
| 07:42 | Similarly, we will connect the n pin of the Capacitor with the n pin of the VoltageSource. |
| 07:50 | Click on the n pin of the Capacitor. |
| 07:53 | Hold and drag it to the n pin of the VoltageSource. |
| 07:58 | Click on the n pin and release the cursor. |
| 08:03 | Next step is to Ground the circuit. |
| 08:07 | Click on the n pin of the VoltageSource. |
| 08:11 | Hold and drag it to the Ground. |
| 08:14 | Note that Ground has got only one pin which is the p pin. |
| 08:20 | Click on it and release the cursor. Now the circuit is complete. |
| 08:25 | Pause the tutorial and check that your circuit looks like mine. |
| 08:33 | Press CTRL S to save the class. |
| 08:37 | Now we will check for the correctness of the class. |
| 08:41 | Click on Check All Models button. |
| 08:45 | Observe the Messages Browser. |
| 08:49 | It shows the number of equations and the number of variables. |
| 08:53 | Model will be ready to simulate if both of them are equal. |
| 08:58 | Click on the Simulate button. A new window appears. |
| 09:03 | This output window displays the success message. |
| 09:09 | Expand R and click on Ir to get the plot between Ir and time. |
| 09:18 | We will learn about Equations and Variables in the upcoming tutorials. |
| 09:24 | That's all for this tutorial. Let's summarize. |
| 09:28 | In this tutorial, we have learnt to, Create a new class , Open an existing class , Connect different classes , Build a Model and Simulate the Model . |
| 09:43 | As an assignment- Construct a RLC Circuit where: Resistor, Inductor and Capacitor are in parallel connection. |
| 09:53 | Use the same classes and connector available in the RLC_Circuit package. |
| 10:01 | This is the diagram of the circuit which needs to be constructed. |
| 10:07 | Watch the video available at the following link.http://spoken-tutorial.org/It summarizes the Spoken Tutorial project. |
| 10:15 | The Spoken Tutorial Project Team Conducts workshops using spoken tutorials ,Gives certificates to those who pass an online test. For more details, please write to us. |
| 10:31 | Please post your times queries in this forum. |
| 10:34 | The FOSSEE team coordinates coding of solved examples of popular books. We give honorarium and certificates for those who do this. For more details, please visit this site. |
| 10:49 | The FOSSEE team helps migrate commercial simulator labs to OpenModelica.We give honorarium and certificates for those who do this. For more details, please visit this site. |
| 11:06 | Spoken Tutorial and FOSSEE projects are funded by NMEICT, MHRD, Government of India. |
| 11:15 | This tutorial is contributed by Kaushik Datta and Priyam Nayak.
Thanks you for joining. |
