People,
I am doing my undergraduate thesis about a electronic throttle control, and i am trying to tunning this using a PID controller and the second method.
The books always says we must keep increasing the gain until the system output oscilllate. But if i keep increasing the gain without change my reference in my system it just doesn't oscillate.
if i change the reference like square wave and than keep incresing the gain, this will start to oscillate and than i can measure the periode and the gain critical.
Do you know if that's all right? because the books does't say o have to change the reference or you can change the reference.
Thank you, Maur=EDcio Mendes