### Chirp Signal in Control Theory

In control systems engineering, a chirp signal (a signal whose frequency increases or decreases with time) is sometimes used for system identification and tuning. This involves injecting a known signal into the system and analyzing the response to identify characteristics and optimize controller parameters.

- https://github.com/betaflight/betaflight/pull/13105
- https://github.com/pichim/bf_controller_tuning