Persistence Excitation in Adaptive Control 

Subject of PE is not easy to find as a lecture material. Great and clear, very fundamental explanation, thank you.

Thanks for the video. It was really informative. So for the nonlinear systems, as you mentioned, we can not know the number of harmonics (oscillators) we need based on the number of the unknown parameters, is that right? I'm actually dealing with a nonlinear system with many parameters that I need to come up with a persistently exciting oscillator (wave) for it and trying to get a preview .