Creating a Vehicle Rear Defogger System : Exercise 6 - System Decomposition

Exercise 6 - System Decomposition

In this exercise, you create three activity-charts that show the decomposition of the top-level activity-chart that was developed in Exercise 4 - Constructing an Activity-Chart. The same modeling techniques should be used in this exercise as in Exercise 4. The following three figures show the three activity-charts that need to be created.

Activity-chart REAR_DEFOG_FEATURES
Activity-chart CALC_REAR_DEFOG_STATE
Activity-Chart REAR_DEFOG_RELAY_MGMT
1.
Note:
During the following step, you need to create the relationship between the activity-charts that have been created within the exercises.
2.
Open the chart called 'REAR_DEFOG_SS' and modify the name of the activity called 'REAR_DEFOG_FEATURES' by adding a '@' symbol to the beginning of the name.
3.
4.
From within the activity-chart REAR_DEFOG_FEATURES, edit the names of the activities CALC_REAR_DEFOG_STATE and REAR_DEFOG_RELAY_MGMT by adding a '@' symbol to the beginning of their names.
Note:
5.
6.
Change the Type from Information Flow to Condition.
7.
Enter the following text in the Description field:

'Indicates that the rear defog is on or off.'
8.
Select Save.
9.
10.
Select View > Refresh from the main Rational Statemate window. You can see how the charts are now decomposed within the model.
11.
Select File > Save from the charts and then File > Exit.
Chart View of Static Structure