Steady state from data
54 views (last 30 days)
Show older comments
Matthew Speijer
on 2 Feb 2021
Commented: Matthew Speijer
on 2 Feb 2021
Wondering if its possible to find the steady state of a data set through a matlab function. Attached is what I'm working with and the plot is of time and theta_dot. Thanks
0 Comments
Accepted Answer
Mathieu NOE
on 2 Feb 2021
hello Matthew
see below :
%Import data
load('DCMotor_OL_Data_4.5V_A02.mat')
% smoothin a bit the derivative
theta_dot_smoo = sgolayfilt(theta_dot,1,21);
figure(1);
plot(time,theta_dot,'b',time,theta_dot_smoo,'r');
ylabel('theta dot');
xlabel('Time (s)');
legend('raw','sgolay filtered');
title('theta dot')
% compute steady state values based on smoothed data
threshold = 0.98*theta_dot_smoo(end); % select only values that are above 98% of the last data y amplitude (smoothed)
ind = find(theta_dot_smoo> threshold);
theta_dot_steady_sate = mean(theta_dot(ind));
More Answers (0)
See Also
Categories
Find more on Assembly 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!