Confusion using cumtrapz for acceleration

1 次查看（过去 30 天）
Bran
Bran 2014-9-16
评论： A Jenkins 2014-9-17
I have data for a person swinging their leg back and forth, I have this data in the form of acceleration. I have tried using cumtrapz to turn this data into displacement.
ie Vel = vel0 + cumtrapz(t,Acc)
Pos = pos0 + cumtrapz(t,Vel)
however I get a graph that is increasing only, no osccilations, I am confused, is cumtrapz dealing with the negative accelerations accurately?
any ideas about how to tackle this problem?
  1 个评论
A Jenkins
A Jenkins 2014-9-17
If you would provide some sample data it would help people reproduce your problem.
I made up my own data but your code seems to work just fine:
t=0:0.1:10;
Acc=sin(t);
vel0=-1;
pos0=0;
Vel = vel0 + cumtrapz(t,Acc)
Pos = pos0 + cumtrapz(t,Vel)
plot(t,Acc,t,Vel,t,Pos)
legend('Acc','Vel','Pos')

请先登录，再进行评论。

请先登录，再回答此问题。

回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 2-D and 3-D Plots 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by