Simulink Control Design™ - MathWorks

Validate Design in Simulink Model

When you tune a Simulink model, the software evaluates tuning goals for a linearization

of the model. Similarly, analysis commands such as getIOTransfer extract linearized

system responses. Therefore, you must validate the tuned controller parameters by

simulating the full nonlinear model with the tuned controller parameters, even if the

tuned linear system meets all your design requirements. To do so, write the tuned

parameter values to the model.

TipIf you tune the Simulink model at an operating point other than the model initial

condition, initialize the model at the same operating point before validating the tuned

controller parameters. See “Simulate Simulink Model at Specific Operating Point” on

page 1-119.

Write Parameters at the Command Line

To write tuned block values from a tuned slTuner interface to the corresponding

Simulink model, use the writeBlockValue command. For example, suppose ST1 is the

tuned slTuner interface returned by systune. The following command writes the tuned

parameters from ST1 to the associated Simulink model.

writeBlockValue(ST1)

Simulate the Simulink model to evaluate system performance with the tuned parameter

values.

Write Parameters in Control System Tuner

To write tuned block parameters to a Simulink model, in the Control System tab, click

Update Blocks.

10 Control System Tuning