Simulink Control Design™ - MathWorks

Batch Linearize Model at Multiple Operating Points

Using linearize Command

This example shows how to use the linearize command to batch linearize a model at

varying operating points.

Obtain the plant transfer function, modeled by the Water-Tank System block, for the

watertank model. You can analyze the batch linearization results to study the operating

point effects on the model behavior.

Open the model.

open_system('watertank')

Specify the linearization I/Os.

ios(1) = linio('watertank/PID Controller',1,'input');

ios(2) = linio('watertank/Water-Tank System',1,'openoutput');

ios(2) specifies an open-loop output point; the loop opening eliminates the effects of

feedback.

You can linearize the model using trimmed operating points, the model initial condition,

or simulation snapshot times. For this example, linearize the model at specified simulation

snapshot times.

ops_tsnapshot = [1,20];

3 Batch Linearization