Tuesday, June 21, 2016

Noisy Signal


Illustration of a noisy signal vs.a smooth signal below:






We have to keep in mind this warning wrt using derivative action in regulation/control in such noisy systems:

The big problem with D control is that if you have noise on your signal (which looks like a bunch of spikes with steep sides) this confuses the hell out of the algorithm.

I would add as our deltaT approaches the period of the noise.



1 comment:

Bob said...

Not noisy if you're using frequency modulation.