Simulink Control Design™ - MathWorks

Model

Characteristic

Linearization Considerations More Information

Models with delays The method with which you represent

time delays in your model can affect

linearization results. For example, if a

Bode plot shows insufficient lag in

phase, the cause can be the Padé

approximation of the model time

delays.

• “Models with Time
  Delays” on page 2-
  178


• “Linearization of
  Models with Delays”
  on page 2-104

Multirate models Incorrect sample time and rate

conversion methods can cause poor

linearization results in multirate

models.

“Linearize Multirate

Models” on page 2-180

Models with PWM

signals

Models with pulse width modulation

signals do not linearize well due to

their discontinuities and high-

frequency switching components.

Consider specifying a custom

linearization for such blocks.

“Configure Models with

Pulse Width Modulation

(PWM) Signals” on page

2-202

Models with Model

Reference blocks

Linearization is not fully compatible

with model reference blocks running in

accelerator simulation mode. Configure

these subsystems to run in normal

mode during linearization.

“Linearization of Models

with Model References”

on page 2-111

Simscape networks Simscape networks commonly linearize

to zero when a set of the system

equation Jacobians are zero at a given

operating condition.

“Linearize Simscape

Networks” on page 2-

204

See Also

Apps

Linear Analysis Tool

4 Troubleshooting Linearization Results