How can you find the poles of a steady state system using c2d and the sampling frequency ?

2 views (last 30 days)
Hi everyone,
I have the steady state model of a system which I want to discretise. I also have the sampling frequency. I have used c2d but I don´t know how I may I identify the poles of the system to assess its stability. Any help would be greatly appreciated.

Answers (1)

Jon on 13 Oct 2020
Edited: Jon on 13 Oct 2020
Suppose you have a continuous plant model g and you discretize it with the sampling period ts
% discretize
gd = c2d(g,ts)
% find poles
p = pole(gd)
% check stability (poles must be inside of unit circle for discrete system stability)
isStable = all(abs(p) < 0)


Find more on Dynamic System Models in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by