MATLAB Answers

How to step through a discrete model simulation one step at a time

2 views (last 30 days)
Bill Tubbs
Bill Tubbs on 29 Mar 2020
Commented: Bill Tubbs on 4 Apr 2020
I have a discrete-time ARX model that I want to use to represent the plant in a simulation:
Ts = 1;
sigma = 0.01;
d = 3;
sys = idpoly([1 -2.4 1.9 -0.5],[0.01 0.001 -0.007],[],[],[],sigma^2,Ts,'IOdelay',d);
How do I simulate this system one timestep at a time in a for loop with my control algorithm?
N = 10;
u = zeros(N,1);
y = zeros(N,1);
for k=1:N
u[k] = rand()*2 - 1;
y[k] = sys ...?
(I know how to simulate a whole trajectory):
u = rand(N,1)*2 -1;
y = sim(sys,u);

Accepted Answer

Navya Seelam
Navya Seelam on 3 Apr 2020
sim function doesn't support onetime step simulation as of now. I have brought this issue to the concerned people and it might be considered in any future release.
  1 Comment
Bill Tubbs
Bill Tubbs on 4 Apr 2020
That would be nice. Especially for those working with adaptive control schemes.

Sign in to comment.

More Answers (0)




Community Treasure Hunt

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

Start Hunting!