- I would like to point out the fact that the derivative block has its limitation. Please refer to the documentation page here.
- Note from the documentation that, all it does is calculate change in input over change in time. You can do that using a combination of Memory and Clock blocks. Screenshot and code below.
function [y,ydot] = fcn(q,qdel,t,tdel)
y = q; %First output is the input signal itself
delT = t - tdel; % Calculate time interval
delU = q - qdel; % Calculate signal change
if delT > 0 % Check if it is not the first time step
ydot = delU/delT; % Calculate change in input over change in time
else
ydot = 0; % Arbitrarily set derivative to 0 if it is the first time step
end
end
