Help clearing up "Unrecognized function or variable 'dt'."
3 views (last 30 days)
Show older comments
%% Problem 2 Linear Actuator
t0=0;
tf=0.1;
ft=0.001;
tspan=[t0:dt:tf]; %This is where I'm getting the error "Error in ProgramName(line 49)tspan=[t0:dt:tf];Unrecognized function or variable 'dt'."
x0=0;
xdot0=0;
i0=0;
IC=[x0 xdot0 0];
[t,z]=ode45(@actuator_ode,tspan,IC,[]);
x=z(:,1);
curr=z(:,3);
subplot(2,1,1)
plot(t,curr)
subplot(2,1,2)
plot(t,x)
0 Comments
Answers (1)
Cris LaPierre
on 27 Feb 2021
Edited: Cris LaPierre
on 27 Feb 2021
Based on the code you've shared, and the error message you are getting, you have not defined the variable dt that you are using to create tspan. You need to either replace dt with a numeric value, or first define dt.
tspan=[t0:0.1:tf];
% or
dt = 0.1;
tspan=[t0:dt:tf];
1 Comment
Jan
on 27 Feb 2021
t0:dt:tf is a vector already. There is no need to include it in Matlab's operator [] for concatenating arrays.
See Also
Categories
Find more on Logical 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!