During simulation, the block can also output a logical assertion signal:
- If all bounds are satisfied, the signal is true ( 1 ).
- If a bound is not satisfied, the signal is false ( 0 ).
For MIMO systems, the bounds apply to the Bode responses computed for all input/output
combinations.
You can add multiple Check Bode Characteristics blocks in your model to check upper
and lower Bode magnitude bounds on various portions of the model.
You can also plot the magnitude and phase on a Bode plot and graphically verify that the
magnitude satisfies the bounds.
This block and the other Model Verification blocks test that the linearized behavior of a
nonlinear Simulink model is within specified bounds during simulation.
- When a model does not violate any bound, you can disable the block by clearing the
assertion option. If you modify the model, you can re-enable assertion to ensure that
your changes do not cause the model to violate a bound. - When a model violates any bound, you can use Simulink Design Optimization software
to optimize the linear system to meet the specified requirements in this block.
You can save the linear system as a variable in the MATLAB workspace.
The block does not support code generation and can be used only in Normal simulation
mode.
Parameters
The following table summarizes the Check Bode Characteristics block parameters,
accessible via the block parameter dialog box. For more information, see “Parameters” on
page 16-3 in the Bode Plot block reference page.
Check Bode Characteristics