7. Verifying Controllers

Complete the following steps to use the Time Domain Analysis step to verify the controller for the model.

1. Click the Add Step button to open the Add Step menu.
2. Select Control Design»Model Analysis»Time Domain Analysis to add a Time Domain Analysis step to the Project View.
3. On the Input Data tab of the Step Setup tab, select Closed Loop Model from the Model pull-down menu to analyze the Closed Loop Model input from the PID Synthesis step.
4. On the Configuration tab, verify that Step is the type of analysis in the Time Analysis pull-down menu.
   
   The Step Response graph displays the same response data as the Step Response graph in the Step Setup tab of the PID Synthesis step.
5. Click the Parametric Data tab to view the parametric data.
   
   The settling time and the rise time are lower for this closed-loop model than for the previous open-loop model in the first Time Domain Analysis step. These lower settling and rise times indicate that the system stabilizes faster.
6. Click the Data View tab to view the Data View.
7. In the Project View, right-click the Signal0 output in the Project View and select Rename from the shortcut menu. Change the name of this output to Controlled Response.
8. Click the Controlled Response output of the Time Domain Analysis step and drag it from the Project View to the Step Response graph in the Data View to display the analysis data on the same graph as the Step Response output.
   
   Notice that the Controlled Response output shows faster settling and rise times than the Step Response output.