Simulink Control Design™ - MathWorks

mdl = 'scdcascade';

open_system(mdl);

Create an slLinearizer interface for the model.

sllin = slLinearizer(mdl);

Vary the proportional (Kp2) and integral gain (Ki2) of the C2 controller in the 10% range.

Kp2_range = linspace(0.9*Kp2,1.1*Kp2,3);

Ki2_range = linspace(0.9*Ki2,1.1*Ki2,5);

[Kp2_grid,Ki2_grid]=ndgrid(Kp2_range,Ki2_range);

params(1).Name = 'Kp2';

params(1).Value = Kp2_grid;

params(2).Name = 'Ki2';

params(2).Value = Ki2_grid;

sllin.Parameters = params;

To calculate the complementary sensitivity of the inner loop, use the y2 signal as the

analysis point. To eliminate the effects of the outer loop, break the outer loop at y1m. Add

both these points to sllin.

addPoint(sllin,{'y2','y1m'})

Determine the index for the maximum values of Ki2 and Kp2.

15 Alphabetical List