OpenModelica/C3/Component-oriented-modeling/English-timed - Revision history

Sandhya.np14 at 11:00, 21 August 2018

2018-08-21T11:00:58Z

Sandhya.np14 at 10:25, 21 August 2018

2018-08-21T10:25:05Z

Jyotisolanki: Created page with " {| border=1 ||''' Time ''' ||'''Narration''' |- ||00:01 || Welcome to the spoken tutorial on '''Component oriented modeling'''. |- ||00:06 || In this tutorial, we are going..."

2017-10-10T12:05:42Z

Created page with " {| border=1 ||''' Time ''' ||'''Narration''' |- ||00:01 || Welcome to the spoken tutorial on '''Component oriented modeling'''. |- ||00:06 || In this tutorial, we are going..."

New page

{| border=1
||''' Time '''
||'''Narration'''

|-
||00:01
|| Welcome to the spoken tutorial on '''Component oriented modeling'''.

|-
||00:06
|| In this tutorial, we are going to learn: How to instantiate a '''model'''.

|-
||00:12
||How to define '''connector class''' and How to develop model of a '''simple electric circuit''' using '''component models'''.

|-
|| 00:21
|| To record this tutorial, I am using: '''OpenModelica 1.9.2'''. '''Ubuntu Operating System version 14.04'''.
|-
|| 00:31
|| But this process is identical to any of the following operating systems.

|-
|| 00:39
|| To understand and practice this tutorial, you need to know how to define a class in '''Modelica'''.

|-
|| 00:45
|| you need to know how to define a '''package''' and '''Icon and Diagram Views'''.

|-
|| 00:51
|| Prerequisite tutorials are mentioned on our website. Please go through them.

|-
|| 00:57
|| Now let us learn more about '''Class Instantiation'''.

|-
|| 01:02
|| '''Modelica classes''' can be instantiated.

|-
|| 01:06
||For example, an individual can be considered an instance of human being '''class'''. '''Instance''' of a '''class''' has the same variables and equations as the '''class''' itself.

|-
|| 01:20
|| The syntax for '''Class Instantiation''' is as shown.

|-
|| 01:25
|| Now, let us understand this through an example. Please download and save all the files available on our website.

|-
|| 01:34
|| Let me switch to '''OMEdit'''. The following files are already open in '''OMEdit''': '''classInstantiationExample''' and '''simpleCircuit'''.

|-
|| 01:48
|| Double-click on '''classInstantiationExample'''. Let us discuss more about this '''class''' now.

|-
|| 01:56
|| Let me shift '''OMEdit''' window to the left for better visibility.

|-
|| 02:02
|| Here, I have instantiated the '''bouncingBall class''' to create two objects named '''object1''' and '''object2'''.
|-
|| 02:12
|| Note that each '''instance''' has different start values for the height variable '''h'''.

|-
|| 02:20
|| Please refer prerequisite tutorials for more information on the '''bouncingBall''' model.

|-
|| 02:27
|| Let us simulate this class now.

|-
|| 02:30
|| Click on '''Simulate''' button in the toolbar.

|-
|| 02:34
|| The class did not simulate and it threw up an error.

|-
|| 02:39
|| This is because '''bouncingBall class''' is not open in '''OMEdit'''.

|-
|| 02:45
|| Open '''bouncingBall class''' which you downloaded from the website.

|-
|| 02:50
|| Now, simulate this '''class''' once again. Close the pop up window.

|-
|| 02:56
|| Note that the '''class''' simulates successfully this time around.

|-
|| 03:01
|| This exercise demonstrates that a '''class''' should be open in '''OMEdit''' to be instantiated.

|-
|| 03:09
|| Expand '''object1''' variables in the '''variables browser'''.

|-
|| 03:14
|| Note that the variables listed here are declared in '''bouncingBall class'''.

|-
|| 03:20
|| These variables are also a part of '''object1''' and '''object2''' since the adjust instances of the '''bouncingBall class'''.

|-
||03:30
||Now delete the result and go back to the slides.

|-
|| 03:37
|| '''Component orientation''' sets '''Modelica''' apart from other modeling and simulation softwares.

|-
|| 03:43
|| It is the single most important feature of '''Modelica'''.

|-
|| 03:48
|| '''component''' models represent single physical phenomenon.

|-
|| 03:53
|| They can be instantiated and connected to produce desired effect.

|-
|| 03:59
|| For example, an '''RLC circuit''' could be developed from '''resistor, inductor''' and '''capacitor''' models.

|-
|| 04:08
|| '''Acausal connectors''' serve as the interface between component instances.

|-
|| 04:15
|| They are defined using '''connector class'''. For example, '''pins''' can be used as '''connectors''' for electrical components.
|-
|| 04:24
|| We will learn more about this when we try to simulate the example for an electric circuit.

|-
|| 04:30
|| '''Connectors''' content across and flow variables and they cannot contain equations.

|-
|| 04:38
|| Now, let us simulate this '''Electric Circuit''' shown in the slide.

|-
|| 04:43
|| The voltage of battery is given by '''{VoSin(2pift)}''', where '''Vo''' is '''10''' Volts, '''f''' is '''1''' Hz and the resistance is '''5''' ohm.

|-
|| 04:59
|| Let us take a look at the '''Solution Methodology''' to model the '''electric circuit''' shown in previous slide: Note that any '''Resistor''' and '''Voltage Source''' have two pins: '''Positive''' and '''Negative'''.

|-
|| 05:14
|| Hence, define a '''connector''' named '''pin'''.

|-
|| 05:18
|| Define a '''class''' named '''Ground''' with one instance of '''pin connector'''.

|-
|| 05:24
|| Define a '''class''' named '''Resistor'''.

|-
|| 05:28
|| The '''Resistor class''' should have two instances of the '''pin connector''': '''Positive pin''' and the '''Negative pin'''.
|-
|| 05:36
|| Define a '''class''' named '''VoltageSource''' with two instances of '''pin connector''' as we have seen in the case of '''resistor class'''.

|-
|| 05:46
|| Define a '''class''' named '''simpleCircuit'''. '''simpleCircuit''' should have instances of '''Resistor''' and '''VoltageSource'''.

|-
|| 05:56
|| Connect the respective '''pins''' of '''Resistor''', '''ground''' and the '''VoltageSource'''.

|-
|| 06:02
|| The component models required have already been programmed.

|-
|| 06:07
|| Hence, I shall demonstrate only the last two steps of '''Solution Methodology'''.

|-
|| 06:13
|| Let me switch to '''OMEdit'''. Go back to the '''Modeling perspective'''.

|-
|| 06:19
|| Let me shift '''OMEdit''' window to the right.

|-
|| 06:23
|| Expand '''simpleElectricCircuit'''package in the '''Libraries Browser'''.

|-
|| 06:29
|| Note that this package has five '''classes''' named: '''pin''', '''Ground''', '''Resistor''', '''Voltage Source''' and '''circuit'''.

|-
|| 06:40
||Double-click on '''simpleElectricCircuit'''. Close '''ClassinstantiationExample'''.

|-
|| 06:48
||Let me shift '''OMEdit''' window to the left once again for better visibility.

|-
|| 06:54
|| '''Modelica.SIunits''' package has been imported in the package '''simpleElectricCircuit'''.

|-
|| 07:02
||Hence, '''type''' definitions in that package, can be used without reference to their full names.

|-
|| 07:10
|| Let us try to understand '''pin connector'''. Scroll down a little bit.

|-
|| 07:17
|| '''Pin''' is defined using '''connector class'''.

|-
|| 07:21
|| '''Voltage''' and '''current''' are the variables that a '''pin''' exchanges with its surroundings.

|-
|| 07:27
|| '''Potential''' at the '''pin''' is defined by '''v'''. '''Voltage''' and '''Current''' are '''types''' defined in '''SIunits''' package of '''Modelica library'''.

|-
|| 07:40
|| '''Voltage''' across a component causes a current to flow through it.

|-
|| 07:44
||Hence, '''current''' is a '''flow''' variable and is defined using '''flow keyword'''.

|-
|| 07:50
|| '''pin connector''' also has an '''Icon view''' specified by '''annotations''' as shown.

|-
|| 07:57
|| Now let us discuss a little about '''Resistor class.''' Scroll down a little more.

|-
|| 08:04
|| As discussed in the '''Solution Methodology''', '''Resistor class''' has two instances of '''pin connector'''.

|-
|| 08:12
||'''p''' stands for '''positive pin''' and '''n''' stands for '''negative pin'''.

|-
|| 08:18
|| Now, let me show you how to instantiate a '''class''' using the '''drag and drop''' functionality of '''OMEdit'''.

|-
|| 08:26
|| To demonstrate that, let me open a new '''class''' using '''Ctrl + N'''.

|-
|| 08:32
|| Name this '''class example1''' and press '''Ok'''. Shift '''OMEdit''' window to the right.

|-
|| 08:41
|| Go to '''Diagram View''' if the class opens in '''Text View'''.

|-
|| 08:46
|| Now let me instantiate '''pin class'''.

|-
|| 08:51
||Left-click on '''pin''' icon in '''Libraries Browser'''.

|-
|| 08:55
||Hold and drag the icon to the '''diagram''' layer. Drop it at any location on the canvas.

|-
||09:04
||We have now created an '''instance''' of '''pin class'''.

|-
|| 09:09
||You may also change the dimensions and location after dropping it, as shown.

|-
|| 09:16
|| Now let us see how this '''class''' is instantiated in '''Text View'''. Go to '''Text View'''.

|-
|| 09:22
|| Notice the command for instantiation of '''class pin''' and an '''annotation''' based on its placement in '''Diagram View'''.

|-
|| 09:33
||Hence, creating an '''instance''' of a '''class''' in '''Diagram View''' automatically reflects in the '''Text View'''. Now let me close '''example1''' tab.

|-
|| 09:45
||Let us learn how to model '''electric circuit''' that we saw in the slides.

|-
|| 09:51
|| Double-click on '''Circuit''' icon which is also a part of '''simpleElectricCircuit''' package.

|-
|| 09:58
||This '''class''' already has our circuit of interest assembled, as can be seen in its '''Diagram View'''. It is ready to be simulated.

|-
|| 10:09
|| But let us build the same '''circuit''' in a new file.

|-
|| 10:14
||We shall use '''drag and drop''' functionality that we have just learnt about.

|-
||10:19
|| Press '''Ctrl + N'''. Name this file '''circuit(underscore)construction'''. Press '''OK'''.

|-
|| 10:28
|| Switch to '''Diagram View''', if it opens in '''Text View'''.

|-
|| 10:32
|| Select, drag and drop the '''VoltageSource''' icon from '''Libraries Browser'''. You may change its dimensions as you wish.

|-
|| 10:43
|| Similarly, select, drag and drop the '''Resistor''' icon from '''Libraries Browser'''.

|-
|| 10:50
|| Do the same with '''Ground class'''.

|-
|| 10:54
|| Now, we need to connect the respective '''pins''' of each component.

|-
|| 11:00
|| Let us first connect the '''positive pin''' of '''Voltage Source''' to the '''positive pin''' of '''Resistor'''.

|-
|| 11:07
||Hover over the left pin of '''Voltage Source'''.

|-
|| 11:11
||The text that appears indicates that, this is the '''positive pin p'''.

|-
|| 11:17
|| Left click on this '''pin''' and drag the cursor closer to the left '''pin''' of '''Resistor'''.

|-
|| 11:24
||Leave the mouse when the appearance of cursor changes to cross from an arrow.

|-
|| 11:30
|| Similarly, connect the '''negative pin''' of '''resistor''' to the '''negative pin''' of '''voltage source'''.

|-
|| 11:38
|| We have not mentioned the connections with '''Ground''' in the circuit diagram.

|-
|| 11:44
||But, we need to connect the '''negative pins''' of '''Resistor''' and '''Voltage Source''' to '''Ground''' individually.

|-
|| 11:51
||This ensures a reference point for '''potential''' in the '''circuit'''.

|-
|| 11:57
|| Now, this '''class''' is complete. Save the '''class''' by pressing '''Ctrl + S'''.

|-
|| 12:04
|| Click on '''Simulate''' button. Close the pop up window.

|-
||12:10
||The '''class''' has simulated successfully.

|-
|| 12:14
||Let me shift '''OMEdit''' window to the left for better visibility of '''Variables browser'''.

|-
|| 12:20
|| Expand '''Resistor''' column in the '''Variables Browser''' and select '''Ir'''.

|-
|| 12:28
||Note that the profile is '''sinusoidal''' as expected.

|-
|| 12:33
||Since the '''Voltage Source''' is an '''AC''' source instead of '''DC'''.

|-
|| 12:38
|| Hence, we have created a model from its component parts and simulated it.

|-
|| 12:44
||We shall learn more about the '''Resistor''' and '''Voltage Source classes''' that we used here in the next tutorial.

|-
|| 12:52
|| Let me switch to the slides.

|-
|| 12:55
||This brings us to the end of this tutorial.

|-
|| 12:59
|| As an assignment, construct an '''electric circuit''' with two '''resistors''' in '''series''', with one '''Voltage Source'''.

|-
|| 13:07
||Use the component models for '''Voltage source''' and '''Resistor''' provided in '''simple electric circuit''' package.

|-
|| 13:15
|| Watch the video available at the following link: [http://spoken-tutorial.org/ org] /What\_is\_a\_Spoken\_Tutorial It summarises '''Spoken Tutorial project'''.

|-
|| 13:21
|| We conduct workshops using spoken tutorials. Please contact us.

|-
|| 13:26
|| If you have questions from this tutorial, please visit the website mentioned below.

|-
|| 13:32
|| We coordinate coding of solved examples of popular books. Please visit our website.

|-
||13:38
|| We help migrate commercial simulator labs to '''OpenModelica'''. Please visit the following website for more information.

|-
|| 13:47
|| '''Spoken Tutorial Project''' is funded by '''NMEICT, MHRD''' Government of India.

|-
|| 13:54
|| We thank the development team of '''OpenModelica''' for their support. Thank you.

@@ Line 190: / Line 190: @@
 |-
 || 05:28
-||  The '''Resistor class''' should have two instances of the '''pin connector''': '''Positive pin''' and the '''Negative pin'''.
+||  The '''Resistor''' class should have two instances of the '''pin connector''': '''Positive pin''' and the '''Negative pin'''.
 |-
 || 05:36
@@ Line 233: / Line 233: @@
 |-
 || 06:48
-||Let me shift '''OMEdit''' window to the left once again for better visibility.
+||Let me shift '''OMEdit''' window to the left once again, for better visibility.
 |-
 || 06:54
-|| '''Modelica.SIunits''' package has been imported in the package '''simpleElectricCircuit'''.
+|| '''Modelica.SIunits''' package has been '''import'''ed in the package '''simpleElectricCircuit'''.
 |-
 || 07:02
-||Hence, '''type''' definitions in that package, can be used without reference to their full names.
+||Hence, '''type''' definitions in that package can be used without reference to their full names.
 |-
 || 07:10
-|| Let us try to understand '''pin connector'''.  Scroll down a little bit.
+|| Let us try to understand '''pin connector'''.  Scroll-down a little bit.
 |-
@@ Line 265: / Line 265: @@
 |-
 || 07:44
-||Hence, '''current''' is a '''flow''' variable and is defined using '''flow keyword'''.
+||Hence, '''current''' is a '''flow''' variable and is defined using '''flow''' keyword.
 |-
@@ Line 273: / Line 273: @@
 |-
 || 07:57
-|| Now let us discuss a little about '''Resistor class.'''  Scroll down a little more.
+|| Now, let us discuss a little about '''Resistor class.'''  Scroll down a little more.
 |-
@@ Line 301: / Line 301: @@
 |-
 || 08:46
-|| Now let me instantiate '''pin class'''.
+|| Now, let me instantiate '''pin''' class.
 |-
@@ Line 321: / Line 321: @@
 |-
 || 09:16
-|| Now let us see how this '''class''' is instantiated in '''Text View'''. Go to '''Text View'''.
+|| Now, let us see how this '''class''' is instantiated in '''Text View'''. Go to '''Text View'''.
 |-
 || 09:22
-|| Notice the command for instantiation of '''class pin''' and an '''annotation''' based on its placement in '''Diagram View'''.
+|| Notice the '''command''' for instantiation of '''class pin''' and an '''annotation''' based on its placement in '''Diagram View'''.
 |-
 || 09:33
-||Hence, creating an '''instance''' of a '''class''' in '''Diagram View''' automatically reflects in the '''Text View'''. Now let me close '''example1''' tab.
+||Hence, creating an '''instance''' of a '''class''' in '''Diagram View''' automatically reflects in the '''Text View'''. Now, let me close '''example1''' tab.
 |-
@@ Line 385: / Line 385: @@
 |-
 || 11:11
-||The text that appears indicates that, this is the '''positive pin p'''.
+||The text that appears indicates that this is the '''positive pin p'''.
 |-
 || 11:17
-|| Left click on this '''pin''' and drag the cursor closer to the left '''pin''' of '''Resistor'''.
+|| Left click on this '''pin''' and drag the '''cursor''' closer to the left '''pin''' of '''Resistor'''.
 |-
 || 11:24
-||Leave the mouse when the appearance of cursor changes to cross from an arrow.
+||Leave the '''mouse''' when the appearance of cursor changes to '''cross''' from an arrow.
 |-
@@ Line 413: / Line 413: @@
 |-
 || 11:57
-|| Now, this '''class''' is complete.  Save the '''class''' by pressing '''Ctrl + S'''.
+|| Now, this '''class''' is complete.  '''Save''' the '''class''' by pressing '''Ctrl + S'''.
 |-
 || 12:04
-|| Click on '''Simulate''' button.  Close the pop up window.
+|| Click on '''Simulate''' button.  Close the pop -up window.
 |-
@@ Line 425: / Line 425: @@
 |-
 || 12:14
-||Let me shift '''OMEdit''' window to the left for better visibility of '''Variables browser'''.
+||Let me shift '''OMEdit''' window to the left, for better visibility of '''Variables browser'''.
 |-
@@ Line 433: / Line 433: @@
 |-
 || 12:28
-||Note that the profile is '''sinusoidal''' as expected.
+||Note that the profile is '''sinusoidal''' as expected
 |-
 || 12:33
-||Since the '''Voltage Source''' is an '''AC''' source instead of '''DC'''.
+||since the '''Voltage Source''' is an '''AC''' source instead of '''DC'''.
 |-
@@ Line 457: / Line 457: @@
 |-
 || 12:59
-|| As an assignment, construct an '''electric circuit''' with two '''resistors''' in '''series''', with one '''Voltage Source'''.
+|| As an assignment, construct an '''electric circuit''' with two '''resistors''' in '''series'''  with one '''Voltage Source'''.
 |-
@@ Line 465: / Line 465: @@
 |-
 || 13:15
-|| Watch the video available at the following link: [http://spoken-tutorial.org/ org] /What\_is\_a\_Spoken\_Tutorial It summarises '''Spoken Tutorial project'''.
+|| Watch the video available at the following link. It summarizes '''Spoken Tutorial project'''.
 |-
 || 13:21
-|| We conduct workshops using spoken tutorials. Please contact us.
+|| We conduct workshops using '''spoken tutorials'''. Please contact us.
 |-

@@ Line 6: / Line 6: @@
 |-
 ||00:01
-|| Welcome to the spoken tutorial on '''Component oriented modeling'''.
+|| Welcome to the '''spoken tutorial''' on '''Component oriented modeling'''.
 |-
 ||00:06
-|| In this tutorial, we are going to learn: How to instantiate a '''model'''.
+|| In this tutorial, we are going to learn:
 |-
 ||00:12
-||How to define '''connector class''' and   How to develop model of a '''simple electric circuit''' using '''component models'''.
+||how to define '''connector class''' and
 |-
 || 00:21
-|| To record this tutorial, I am using:  '''OpenModelica 1.9.2'''.  '''Ubuntu Operating System version 14.04'''.
+|| To record this tutorial, I am using:  '''OpenModelica 1.9.2''',  '''Ubuntu Operating System version 14.04'''.
 |-
 || 00:31
-|| But this process is identical to any of the following operating systems.
+|| But this process is identical to any of the following '''operating system'''s.
 |-
@@ Line 29: / Line 31: @@
 |-
 || 00:45
-|| you need to know how to define a '''package''' and '''Icon and Diagram Views'''.
+|| You need to know how to define a '''package''' and '''Icon and Diagram Views'''.
 |-
@@ Line 45: / Line 47: @@
 |-
 || 01:06
-||For example, an individual can be considered an instance of human being '''class'''. '''Instance''' of a '''class''' has the same variables and equations as the '''class''' itself.
+||For example, an individual can be considered as an instance of '''human being''' '''class'''. '''Instance''' of a '''class''' has the same variables and equations as the '''class''' itself.
 |-
@@ Line 53: / Line 55: @@
 |-
 || 01:25
-|| Now, let us understand this through an example.  Please download and save all the files available on our website.
+|| Now, let us understand this through an example.  Please download and '''save''' all the files available on our website.
 |-
@@ Line 69: / Line 71: @@
 |-
 || 02:02
-|| Here, I have instantiated the '''bouncingBall class''' to create two objects named   '''object1''' and '''object2'''.
+|| Here, I have instantiated the '''bouncingBall class''' to create two '''object'''s named   '''object1''' and '''object2'''.
 |-
 || 02:12
@@ Line 88: / Line 90: @@
 |-
 || 02:34
-|| The class did not simulate and it threw up an error.
+|| The class did not simulate and it threw up an '''error'''.
 |-
@@ Line 100: / Line 102: @@
 |-
 || 02:50
-|| Now, simulate this '''class''' once again.  Close the pop up window.
+|| Now, simulate this '''class''' once again.  Close the pop-up window.
 |-
@@ Line 120: / Line 122: @@
 |-
 || 03:20
-|| These variables are also a part of '''object1''' and '''object2''' since the adjust instances of the '''bouncingBall class'''.
+|| These variables are also a part of '''object1''' and '''object2''' since they are just instances of the '''bouncingBall class'''.
 |-
 ||03:30
-||Now delete the result and go back to the slides.
+||Now, delete the result and go back to the slides.
 |-
@@ Line 159: / Line 161: @@
 |-
 || 04:30
-|| '''Connectors''' content across and flow variables and they cannot contain equations.
+|| '''Connectors''' contain across and flow variables and they cannot contain equations.
 |-
 || 04:38
-|| Now, let us simulate this '''Electric Circuit''' shown in the slide.
+|| Now, let us simulate this '''Electric Circuit''' shown in the '''slide'''.
 |-
@@ Line 171: / Line 173: @@
 |-
 || 04:59
-|| Let us take a look at the '''Solution Methodology''' to model the '''electric circuit''' shown in previous slide: Note that any '''Resistor''' and '''Voltage Source''' have two pins: '''Positive''' and '''Negative'''.
+|| Let us take a look at the '''Solution Methodology''' to model the '''electric circuit''' shown in previous slide.
 |-