Simulink Control Design™ - MathWorks

Response Plotted System (1-

DOF)

Plotted System (2-

DOF)

Description

Output disturbance

rejection

1

1+GC

(from d 2 to y)

1

1 −GCy

(from d 2 to y)

Closed-loop system

response to a step

disturbance at plant

output. Use when you

want to analyze

sensitivity to modeling

errors.

Compare Tuned Response to Block Response

By default, PID Tuner plots system responses using both:

• The PID coefficient values in the controller block in the Simulink model (Block
  response).


• The PID coefficient values of the current PID Tuner design (Tuned response).

As you adjust the current PID Tuner design, such as by moving the sliders, the Tuned

response plots change, while the Block response plots do not.

7 PID Controller Tuning