OpenModelica/C3/Block-Component-Modeling/English-timed - Revision history

Sandhya.np14 at 14:53, 21 August 2018

2018-08-21T14:53:55Z

Sandhya.np14 at 14:52, 21 August 2018

2018-08-21T14:52:36Z

Sandhya.np14 at 12:05, 21 August 2018

2018-08-21T12:05:08Z

Priyacst at 10:12, 14 December 2017

2017-12-14T10:12:15Z

Jyotisolanki: Created page with "{| border=1 ||''' Time ''' ||'''Narration''' |- || 00:01 || Welcome to the spoken tutorial on '''Block component modeling'''. |- || 00:06 || In this tutorial, we are going t..."

2017-10-12T10:22:34Z

Created page with "{| border=1 ||''' Time ''' ||'''Narration''' |- || 00:01 || Welcome to the spoken tutorial on '''Block component modeling'''. |- || 00:06 || In this tutorial, we are going t..."

New page

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

|-
|| 00:01
|| Welcome to the spoken tutorial on '''Block component modeling'''.

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

|-
|| 00:12
||How to connect '''blocks'''.

|-
|| 00:15
||How to use blocks from '''Modelica Library'''.

|-
|| 00:19
|| To record this tutorial, I am using: '''OpenModelica version 1.9.2'''

|-
|| 00:26
||You may use any of the following operating systems.

|-
|| 00:30
|| To understand and practice this tutorial, you need Knowledge of '''component oriented modeling''' in '''Modelica'''.

|-
|| 00:38
|| Prerequisite tutorials are mentioned on our website. Please go through them.

|-
||00:44
|| Let us now learn more about '''blocks'''.

|-
||00:48
|| '''block''' is a specialized class in '''Modelica'''.

|-
||00:52
|| It is useful in control applications.

|-
||00:56
||For example, '''Modelica Library''' has blocks for '''PI''' and '''PID''' controllers which are frequently seen in chemical engineering control applications.

|-
||01:08
||variables of a block class must have fixed causality: either '''input''' or '''output'''.

|-
||01:15
|| '''blocks''' can be connected using '''connect''' statements.

|-
||01:19
||We have learnt about '''connect''' statements in previous tutorials.

|-
|| 01:24
|| '''Connectors''' acts as interface between '''blocks'''.

|-
||01:28
||They are used to model '''input''' and '''output''' signals.

|-
||01:33
||For example, this is declaration for a '''block connector''' that models '''real''' input signals.

|-
||01:41
|| Let us now try to understand '''block component modeling''' through an example.

|-
||01:47
||Let us write a class that uses blocks to perform the following operations: Take two time varying signals as '''input''' and '''output''' their sum.

|-
||01:59
||Take a time varying signal as input and amplify it by a constant.

|-
||02:05
||Let us define this problem statement in detail using schematics.

|-
|| 02:11
|| This figure shows a schematic for block that takes two signals as input and returns their sum.

|-
||02:19
||To make things simpler, let us choose signal '''1''' to be '''t''' which represents time.

|-
||02:26
||Let signal '''2''' be '''2 (times) t (squared)'''

|-
|| 02:31
|| This is schematic for amplification of a '''signal'''.

|-
||02:35
||It is similar to the previous case with two '''inputs''' and one '''output'''.

|-
||02:41
||Let us choose one '''input''' to be our '''signal'''.

|-
||02:46
||Let the other '''input''' i.e. '''signal 2''' be a constant '''K''' by which to amplify the signal.

|-
||02:54
||The product of these two '''inputs''' is the '''output''' required.

|-
||02:59
||We have chosen the '''signal 2''' i.e. '''K''' to be '''5''' units.

|-
|| 03:06
|| Notice that both the Sum of signals and amplification require a block with '''2''' inputs and '''1''' output.

|-
||03:16
||'''Modelica library''' already has a block named '''MISO''' that stands for '''Multiple Input Single Output'''.

|-
||03:24
||It is available in '''Modelica.Interfaces.Block''' package.

|-
||03:30
||The input to this block '''u''' is a vector since it can accept multiple signals as input.

|-
||03:38
||'''y''' is the output which is a '''scalar'''.

|-
|| 03:42
|| Let us now discuss how to solve our problem using '''OMEdit'''.

|-
||03:48
||Extend '''MISO''' block to create a block named '''Sum'''.

|-
||03:53
||We have learnt about extending a class in previous tutorials.

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||03:59
||Extend '''MISO''' to create a block named '''Product'''.

|-
||04:04
||Create a class named '''main'''.

|-
||04:08
||Create instances of '''Sum''' and '''Product''' blocks in the '''main''' class.

|-
||04:14
||Lastly, program the necessary equations related to '''input''' and '''output''' variables.

|-
||04:22
||Note that '''Sum''' corresponds to the Sum of signals whereas '''Product''' corresponds to the '''amplification of signal'''.

|-
|| 04:32
|| I have already created the necessary '''blocks '''and packaged them into a file named '''arithmeticOperationsUsingBlocks'''.

|-
||04:42
||You may locate this file on our website and download it.

|-
|| 04:46
|| Let me now switch to '''OMEdit'''.

|-
||04:49
||I shall first demonstrate the package '''arithmeticOperationsUsingBlocks''' and then demonstrate the syntax of '''MISO''' block.

|-
|| 04:59
|| I have already opened the package '''arithmeticOperationsUsingBlocks''' in '''OMEdit'''.

|-
||05:06
||Let me expand it in the '''Libraries Browser'''.

|-
||05:10
||Note that the package has blocks named '''Sum''', '''Product''' and a '''main''' class.

|-
|| 05:18
|| Double-click on all three of them.

|-
||05:24
||Let me also open '''MISO''' block from '''Modelica Library'''.

|-
|| 05:29
|| Expand '''Modelica library'''.

|-
||05:32
||Go to '''Blocks → Interfaces'''. Scroll down a bit.

|-
||05:39
||Double Click on '''MISO'''.

|-
||05:43
||Interfaces package also has several other blocks which are similar to '''MISO''' in functionality.

|-
|| 05:51
|| Now let me shift '''OMEdit''' window to the left for better visibility.

|-
||05:57
||Let us first look into '''Sum''' block.

|-
|| 06:01
|| Switch to '''Text View''' if it opens in '''Diagram View'''.

|-
|| 06:05
|| This is the syntax for declaring a '''block'''.

|-
|| 06:10
|| This statement is used to inherit '''MISO block''' from its location in '''Modelica library'''.

|-
||06:16
||We have learnt about '''Class inheritance''' or '''Class extension''' in previous tutorials.

|-
|| 06:23
|| Let me now take a step back for a moment and demonstrate '''MISO block'''.

|-
||06:29
||Go to '''MISO tab'''. Switch to '''Text View'''.

|-
|| 06:35
|| '''MISO''' is a partial block which means that it can only be inherited but not instantiated.

|-
|| 06:43
|| It inherits '''Block class'''.

|-
||06:46
||You may locate this in '''Modelica library''' using the path shown.

|-
||06:51
||This class is used here only for the sake of its '''Diagram View''' and hence need not be discussed.

|-
||06:58
|| '''nin''' represents the number of inputs.

|-
||07:02
|| This parameter may be changed when the block is inherited.

|-
|| 07:08
|| '''RealInput''' is a connector which evidently represents a '''real''' input signal.

|-
||07:14
||In this case, the input is a vector '''u''' as we already discussed.

|-
|| 07:20
|| Similarly, '''RealOutput''' is a connector which represents a '''real''' output signal.

|-
||07:27
||Here, '''y''' is the real-valued output signal.

|-
|| 07:31
|| '''RealInput''' and '''RealOutput''' are present in the same package of '''Modelica Library''' as '''MISO'''.

|-
||07:38
||Please look into them.

|-
|| 07:41
|| Now, let me show you how the '''Diagram View''' of '''MISO block''' looks like.

|-
|| 07:46
|| Let us now go back to '''Sum''' block and continue from where we left off.

|-
|| 07:52
|| Variables '''y''' and '''u''' are a part of this block since it inherits '''MISO'''.

|-
||07:59
||As we have learnt in previous tutorials, '''Sum''' is an '''array''' function.

|-
||08:05
||It takes an '''array''' as input and returns the sum of its elements.

|-
|| 08:11
|| Let me switch to '''Product''' block. Switch to '''Text View'''.

|-
|| 08:17
|| This block inherits '''MISO''' as well.

|-
|| 08:21
|| As we have seen in previous tutorials, '''Product''' is an array function that takes an array as '''input'''.

|-
||08:29
||It returns the product of its elements.

|-
|| 08:33
|| Let me now switch to '''main''' class.

|-
||08:37
||Switch to '''Text View'''.

|-
||08:39
|| These statements indicate the instantiation of '''Sum''' and '''Product''' blocks.

|-
||08:44
||These instances can also be created using the drag and drop functionality of '''OMEdit'''.

|-
||08:51
||We discussed this feature in previous tutorials.

|-
|| 08:56
|| '''nin''' is a parameter for dimension of '''input''' vector '''u''' in '''MISO'''.

|-
||09:03
||We assign a value of '''2''' to this parameter.

|-
||09:07
|| This equation indicates the values of '''signal 1''' and '''signal 2''' for '''Sum''' of signals which we discussed in slides.

|-
|| 09:17
|| Similarly, this indicates the values of '''Signal 1''' and '''Signal 2''' for amplification of signal as we already discussed.

|-
|| 09:29
|| Let me now simulate this class. Click on '''Simulate''' button.

|-
||09:33
||Close the pop up window.

|-
|| 09:36
|| Expand '''mySum''' in '''Libraries Browser'''. Select '''y'''.

|-
||09:43
||Note that this generates a plot that is in accordance with the values of signal provided.

|-
|| 09:51
|| This brings us to the end of this tutorial.

|-
|| 09:54
|| As an assignment, look into the codes for '''RealInput, RealOutput, SI, SO''' and '''MO''' blocks.

|-
||10:04
||You can find them in '''Modelica.Blocks.Interfaces''' package.

|-
||10:10
||'''RealInput'''and '''RealOutput''' are connectors which are used quite frequently.

|-
||10:17
||Hence it is necessary to understand them.

|-
|| 10:21
|| Watch the video available at the following link: http://spoken-tutorial.org/What\_is\_a\_Spoken\_Tutorial .It summarises the '''Spoken Tutorial''' project.

|-
|| 10:27
|| We conducts workshops using '''spoken tutorials'''. Give certificates. Please contact us.

|-
|| 10:33
|| If you have questions in this spoken tutorial, please visit the webpage mentioned.

|-
|| 10:40
|| We coordinate coding of solved examples from popular books. We give honorarium to contributors. Please visit our website.

|-
|| 10:50
|| We help migrate labs from commercial simulators to '''OpenModelica'''.

|-
|| 10:56
|| '''Spoken Tutorial Project''' is supported by '''NMEICT, MHRD''', Government of India.

|-
|| 11:03
|| We thank the development team of '''OpenModelica''' for their support.

|-
|| 11:09
|| I would like to thank you for joining me in this tutorial. Good bye.

@@ Line 425: / Line 425: @@
 || Watch the video available at the following link:
 http://spoken-tutorial.org/What_is_a_Spoken_Tutorial
 It summarizes the '''Spoken Tutorial''' project.

@@ Line 70: / Line 70: @@
 |-
 ||01:28
-||They are used to model '''input''' and '''output signal'''s.
+||They are used to model input and output signals.
 |-
@@ Line 83: / Line 83: @@
 ||01:47
 ||Let us write a class that uses '''block'''s to perform the following operations:
-Take two time varying signals as '''input''' and '''output''' their sum.
+Take two time varying signals as input and output their sum.
 |-
@@ Line 103: / Line 103: @@
 |-
 ||02:26
-||Let signal '''2''' be '''2 times t squared'''.
+||Let signal 2 be '''2 times t squared'''.
 |-
@@ Line 111: / Line 111: @@
 |-
 ||02:35
-||It is similar to the previous case with two '''inputs''' and one '''output'''.
+||It is similar to the previous case with two inputs and one output.
 |-
 ||02:41
-||Let us choose one '''input''' to be our '''signal'''.
+||Let us choose one input to be our '''signal'''.
 |-
 ||02:46
-||Let the other '''input''' i.e. '''signal 2''' be a constant '''K''' by which to amplify the signal.
+||Let the other input i.e. '''signal 2''' be a constant '''K''' by which to amplify the signal.
 |-
 ||02:54
-||The product of these two '''inputs''' is the '''output''' required.
+||The product of these two inputs is the output required.
 |-
@@ Line 131: / Line 131: @@
 |-
 || 03:06
-|| Notice that both the Sum of signals and amplification require a block with '''2''' inputs and '''1''' output.
+|| Notice that both the sum of signals and amplification require a block with '''2''' inputs and '''1''' output.
 |-
@@ Line 171: / Line 171: @@
 |-
 ||04:08
-||Create instances of '''Sum''' and '''Product''' blocks in the '''main''' class.
+||Create '''instance'''s of '''Sum''' and '''Product''' blocks in the '''main''' class.
 |-
 ||04:14
-||Lastly, program the necessary equations related to '''input''' and '''output''' variables.
+||Lastly, program the necessary equations related to input and output variables.
 |-
@@ Line 226: / Line 226: @@
 |-
-||05:39
+||C5:39
-||Double Click on '''MISO'''.
+||Double click on '''MISO'''.
 |-
 ||05:43
-||Interfaces package also has several other blocks which are similar to '''MISO''' in functionality.
+||'''Interfaces''' package also has several other '''block'''s which are similar to '''MISO''' in functionality.
 |-
 || 05:51
-|| Now let me shift '''OMEdit''' window to the left for better visibility.
+|| Now, let me shift '''OMEdit''' window to the left for better visibility.
 |-
@@ Line 271: / Line 271: @@
 |-
 || 06:43
-|| It inherits '''Block class'''.
+|| It '''inherit'''s '''Block class'''.
 |-
 ||06:46
-||You may locate this in '''Modelica library''' using the path shown.
+||You may locate this in '''Modelica library''' using the '''path''' shown.
 |-
@@ Line 291: / Line 291: @@
 |-
 || 07:08
-|| '''RealInput''' is a connector which evidently represents a '''real''' input signal.
+|| '''RealInput''' is a '''connector''' which evidently represents a '''real''' input signal.
 |-
@@ Line 299: / Line 299: @@
 |-
 || 07:20
-|| Similarly, '''RealOutput''' is a connector which represents a '''real''' output signal.
+|| Similarly, '''RealOutput''' is a '''connector''' which represents a '''real''' output signal.
 |-
@@ Line 323: / Line 323: @@
 |-
 || 07:52
-|| Variables '''y''' and '''u''' are a part of this block since it inherits '''MISO'''.
+|| Variables '''y''' and '''u''' are a part of this block since it '''inherit'''s '''MISO'''.
 |-
@@ Line 359: / Line 359: @@
 |-
 ||08:39
-|| These statements indicate the instantiation of '''Sum''' and '''Product''' blocks.
+|| These statements indicate the '''instantiation''' of '''Sum''' and '''Product''' blocks.
 |-
@@ Line 391: / Line 391: @@
 |-
 ||09:33
-||Close the pop up window.
+||Close the pop-up window.
 |-
@@ Line 399: / Line 399: @@
 |-
 ||09:43
-||Note that this generates a plot that is in accordance with the values of signal provided.
+||Note that this generates a '''plot''' that is in accordance with the values of signal provided.
 |-
@@ Line 423: / Line 423: @@
 |-
 || 10:21
-|| Watch the video available at the following link: http://spoken-tutorial.org/What\_is\_a\_Spoken\_Tutorial .It summarises the '''Spoken Tutorial''' project.
+|| Watch the video available at the following link:
 |-
 || 10:27
-|| We conducts workshops using '''spoken tutorials'''. Give certificates. Please contact us.
+|| We conduct workshops using '''spoken tutorials''', give certificates. Please contact us.
 |-

@@ Line 5: / Line 5: @@
 |-
 || 00:01
-|| Welcome to the spoken tutorial on '''Block component modeling'''.
+|| Welcome to the '''spoken tutorial''' on '''Block component modeling'''.
 |-
 || 00:06
-|| In this tutorial, we are going to learn: How to define a '''block'''.
+|| In this tutorial, we are going to learn:
 |-
 || 00:12
-||How to connect '''blocks'''.
+||how to connect '''blocks''',
 |-
 || 00:15
-||How to use blocks from '''Modelica Library'''.
+||how to use blocks from '''Modelica Library'''.
 |-
 || 00:19
-|| To record this tutorial, I am using:  '''OpenModelica version 1.9.2'''
+|| To record this tutorial, I am using: '''OpenModelica version 1.9.2'''
 |-
@@ Line 29: / Line 30: @@
 |-
 || 00:30
-|| To understand and practice this tutorial, you need Knowledge of '''component oriented modeling''' in '''Modelica'''.
+|| To understand and practice this tutorial, you need knowledge of '''component oriented modeling''' in '''Modelica'''.
 |-
@@ Line 45: / Line 46: @@
 |-
 ||00:52
-|| It is useful in control applications.
+|| It is useful in '''control application'''s.
 |-
@@ Line 53: / Line 54: @@
 |-
 ||01:08
-||variables of a block class must have fixed causality: either '''input''' or '''output'''.
+||Variables of a block class must have fixed causality, either '''input''' or '''output'''.
 |-
@@ Line 69: / Line 70: @@
 |-
 ||01:28
-||They are used to model '''input''' and '''output''' signals.
+||They are used to model '''input''' and '''output signal'''s.
 |-
@@ Line 81: / Line 82: @@
 |-
 ||01:47
-||Let us write a class that uses blocks to perform the following operations: Take two time varying signals as '''input''' and '''output''' their sum.
+||Let us write a class that uses '''block'''s to perform the following operations:
 |-
@@ Line 101: / Line 103: @@
 |-
 ||02:26
-||Let signal '''2''' be '''2 (times) t (squared)'''
+||Let signal '''2''' be '''2 times t squared'''.
 |-

@@ Line 405: / Line 405: @@
 |-
 || 09:54
-|| As an assignment, look into the codes for '''RealInput, RealOutput, SI, SO''' and '''MO''' blocks.
+|| As an assignment, look into the codes for '''RealInput, RealOutput, SI, SO''' and '''MIMO''' blocks.
 |-