Simulink Control Design™ - MathWorks

If the response plots or model equations of the linearized system do not capture the
expected dynamics of your system, check the:

• Operating point at which you linearized the model. For more information, see “Check
  Operating Point” on page 4-6.


• Analysis point placement in your model. For more information, see “Check Analysis
  Point Placement” on page 4-7.

Once you verify that the model operating point and analysis points are correct, if your
model still does not linearize as expected, you can troubleshoot the linearization results
using the Linearization Advisor. The Linearization Advisor is a troubleshooting tool that
allows you to identify blocks in your model that are potentially problematic for
linearization. For more information, see “Identify and Fix Common Linearization Issues”
on page 4-9.

Once you have identified potentially problematic blocks, you can then troubleshoot the
linearizations of the individual blocks using the Linearization Advisor. For more
information, see “Block Linearization Troubleshooting” on page 4-62.

Troubleshoot Linearizations of Models with Special

Characteristics

Some Simulink models and blocks do not linearize well or require special considerations
during linearization.

Model

Characteristic

Linearization Considerations More Information

Large models For some large complex models, you

can systematically linearize specific

model components. You can then check

if these components linearize as

expected.

“Specify Portion of

Model to Linearize” on

page 2-13

Linearization Troubleshooting Overview