I've been reading up on discretised control the past couple days and it seems most SIMULINK examples rely on Z-transform blocks for such modelling.
(i) Is this the only way to model a discrete PI/PID controller in MATLAB?
(ii) I've worked out a couple versions of velocity algorithms, and could essentially have it run via a m-file; is this my only recourse?
I guess I might as well look at the Laplace, poles (stability) analysis and Routh H. Criterion while I'm at it, since I've already modelled the plant in question (a motor).
Thanks in advance for any advice and assistance. Cheers, Mike.


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