Simulink Control Design™ - MathWorks

Bode Plot

Bode plot of linear system approximated from nonlinear Simulink model

Library

Simulink Control Design

Description

This block is the same as the Check Bode Characteristics block except for different

default parameter settings in the Bounds tab.

Compute a linear system from a nonlinear Simulink model and plot the linear system on a

Bode plot.

During simulation, the software linearizes the portion of the model between specified

linearization inputs and outputs, and plots the magnitude and phase of the linear system.

The Simulink model can be continuous- or discrete-time or multirate, and can have time

delays. The linear system can be Single-Input Single-Output (SISO) or Multi-Input Multi-

Output (MIMO). For MIMO systems, the plots for all input/output combinations are

displayed.

You can specify piecewise-linear frequency-dependent upper and lower magnitude bounds

and view them on the Bode plot. You can also check that the bounds are satisfied during

simulation:

• If all bounds are satisfied, the block does nothing.


• If a bound is not satisfied, the block asserts, and a warning message appears at the
  MATLAB prompt. You can also specify that the block:

16 Blocks — Alphabetical List