4 ms·
FYI, if you're a visual learner, check out my YouTube channel: https://www.youtube.com/channel/UC923b-omXUs0dnWOTDD7FhA https://www.youtube.com/channel/UC923b-o
by TimWescott 7y ago
FYI, if you're a visual learner, check out my YouTube channel: https://www.youtube.com/channel/UC923b-omXUs0dnWOTDD7FhA https://www.youtube.com/channel/UC923b-omXUs0dnWOTDD7FhA, but be warned there's not as much there as I'd like.
I do have all the material from "PID Without a PhD" in there -- just watch the three videos with "PID" in the title.
I also recommend Brian Douglas's channel: https://www.youtube.com/user/ControlLectures https://www.youtube.com/user/ControlLectures if for no other reason than because I haven't posted a new video for three years -- but then, he's been posting on some Matlab channel, so you'll want to start with his and then move to that one.
- michaelt 7y agoThose look great! What would you recommend if the feedback is noisy enough that a derivative term would be mostly noise, but using a simple FIR filter to remove the noise introduces a delay which makes the system less responsive?
- TimWescott 7y agoFIR filters are the last thing you want in closed loop -- for the amount of filtering they do, they have way excessive phase delay. I'd use a derivative term with bandlimiting, and I'd accept that if I couldn't get the response I needed using feedback in that case then I'd either investigate using feedforward, or I'd work on changing the sensors on the plant so that they're less noisy.