Documentation

Start System Composer. Enter systemcomposer at the MATLAB command line.

In the Modeling tab, select Import and then from the drop-down, select Import .

Browse to the examples folder. <matlabroot>\toolbox\systemcomposer\examples.

Select simpleProfile.

From the toolstrip, click Import and select Edit to open the Profile Editor.

Open the Sensors component.

On the Modeling tab, select Apply Stereotypes.

In the Apply Stereotypes dialog box and from the Apply to list, select All elements. From the in list, select This layer.

In the list of available stereotypes, select simpleProfile.sysGeneral.

Click Apply and close the window to exit the dialog box.

Select the GPS component. Right-click and select Apply Stereotype. Check that simpleProfile.sysComponent is selected.

Navigate to top of the model. Check that the sysComponent stereotype is applied to the Sensors and Trajectory Planning components, and the top-level architecture model. Right-click each component or a space in the top-level, and select Apply Stereotype to ensure simpleProfile.sysComponent is selected.

Check that the sysConnector stereotype is applied to all connectors in the Sensors layer, the Trajectory Planning layer, and the top model layer. Press and hold Shift to select multiple connectors. Right-click the selection, click Apply Stereotype, and check that the stereotype is selected.

In the Sensors component, select the GPS component.

Open the Property Inspector. Click the drop-down in the Design section of the toolstrip and select Property Inspector.

Expand the sysComponent stereotype to see the properties.

Set unitPrice to 5 and press Enter.

Select the GPSData port connector. Check that length is set to 0.05 and unitPrice to 0.1.

Complete the model using the values in this table. If a property is not in the table, you can leave it blank as it has no effect on the analysis. Pin the Property Inspector to the editor to make it permanently visible during this operation.

Save the model as ex_RobotArch_props.slx.

On the Modeling tab and in the Views section, select Analysis Model, and then from the drop-down list select Analysis Model.

Add an analysis function. In the Analysis function box, enter the function name ex_RobotArch_analysis without an extension, and then click the button. A MATLAB function file is created and saved with the name ex_RobotArch_analysis.m.

The analysis function includes constructs that get properties from model elements, given as a template. Modify this template to add the cost of individual elements to obtain total cost for their parent architecture. This function computes the cost for one model element as a total of its own cost and the cost of all of its child components.

function ex_RobotArch_analysis(instance,varargin)

if instance.isComponent()
    sysComponent_unitPrice = instance.getValue("sysComponent.unitPrice");
    for child = instance.Components
        comp_price = child.getValue("sysComponent.unitPrice");
        sysComponent_unitPrice = sysComponent_unitPrice + comp_price;
    end
    for child = instance.Connectors
        if (child.hasValue('sysConnector.unitPrice'))
            unitPrice = child.getValue("sysConnector.unitPrice");
            length = child.getValue("sysConnector.length");
            sysComponent_unitPrice = unitPrice*length + sysComponent_unitPrice;
        end
    end
  instance.setValue("sysComponent.unitPrice",sysComponent_unitPrice)
end

Return to the Instantiate Architecture Model screen and click Instantiate. The Analysis Viewer shows the properties of each model element. The default values for the start of the Analysis are taken from the property values you entered when you attached the stereotype to the model and edited their values.

In the Analysis section, select BottomUp as the iteration method and click Analyze.

The cost of each element is added in a bottom-up manner to find the cost of the system. The result is written to the analysis instance and is visible in the Analysis Viewer.