Simulink Control Design™ - MathWorks

To use the algorithm, you do not need an initial PID controller design. However, you must

have some way to get the plant to a nominal operating point for the frequency-response

estimation experiment. If you have an initial controller design, you can use the Closed-

Loop PID Autotuner. For a comparison of closed-loop and open-loop PID autotuning, see

“When to Use PID Autotuning” on page 8-2.

The block supports code generation with Simulink Coder, Embedded Coder, and Simulink

PLC Coder. It does not support code generation with HDL Coder.

For more information about using the Open-Loop PID Autotuner block, see:

• “PID Autotuning for a Plant Modeled in Simulink” on page 8-9


• “PID Autotuning in Real Time” on page 8-17

For more general information about PID autotuning and a comparison of the closed-loop

and open-loop approaches, see “When to Use PID Autotuning” on page 8-2.

Ports

Input

u — Signal from controller

scalar

Insert the block into your system such that this port accepts a control signal from a

source. Typically, this port accepts the signal from the PID controller in your system.

Data Types: single | double

y — Plant output

scalar

Connect this port to the plant output.

Data Types: single | double

start/stop — Start and stop the autotuning experiment

scalar

To start and stop the autotuning process, provide a signal at the start/stop port. When

the value of the signal changes from:

16 Blocks — Alphabetical List