MATLAB MODEL PREDICTIVE CONTROL TOOLBOX - S Dokumentacja Pobierz pdf (Strona 153)

Design Controller in Simulink

5-13

Tip After you export the controller, you can examine it for design errors and stability

problems using the review function.

Verify Steady-State Operation for Plant-Controller Combination

To simulate the model at the desired operating point, export Operating Point to the

MATLAB workspace and initialize the model with it. In the Control and Estimation

Tools Manager, expand the Operating Points node and right-click Operating Point.

Select Export to Workspace. The Export to Workspace dialog box opens. Select the Use

the operating point to initialize model check box. Click OK.

Run the CSTR_ClosedLoop model.

The simulation plots show that the residual concentration reaches 2 kmol/m

and the

reactor temperature is approximately 373 K. Therefore, the controller is initialized at the

desired operating point.

Test Controller Robustness

For example, change the feed concentration, specified by the Feed Concentration block,

to 9.5 kmol/m

. Recall that the nominal feed concentration value used to design the

controller is 10 kmol/m

. Run the model.

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MATLAB MODEL PREDICTIVE CONTROL TOOLBOX - S Dokumentacja Strona 153