Simulink Control Design™ - MathWorks

• When the experiment is running (start/stop positive), the block injects test signals
  into the plant at this port. If you have any saturation or rate limit protecting the plant,
  feed the signal from u+Δu into it.


• When the experiment is not running (start/stop zero or negative), the block passes
  signals unchanged from u to u+Δu.

Dependencies

To enable this port, in Output Signal Configuration, select control + perturbation.

Data Types: single | double

Δu — Plant input perturbation

scalar

The block generates a perturbation signal at this port. Typically, you inject the

perturbation from this port via a sum block, as shown in the following diagram.

• When the experiment is running (start/stop positive), the block generates
  perturbation signals at this port.


• When the experiment is not running (start/stop zero or negative), the signal at this
  port is zero. In this state, the block has no effect on the plant.

16 Blocks — Alphabetical List