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How to integrate data points?

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Mahmoud
Mahmoud 2015-3-13
评论： NUR AINA NAJIHA ABD MANAN 2020-6-22
Hello guys, I have a set of 1220 points for acceleration vs time and I want to plot velocity vs time and displacement vs time. As you all know I should integrate acceleration in order to get the velocity, I was thinking about using the Trapezoidal rule however it will give me the total velocity but what I want is the velocity vs time (like point by point). Any idea how I can do that using Matlab? I don't want a Matlab ready function to do that. Like while or for loop are fine.
Thanks in advance
  2 个评论
Abhishek Madan
Abhishek Madan 2020-6-10
Hi ,
Can u please share the script which u used to solve this?
Thanks
NUR AINA NAJIHA ABD MANAN
NUR AINA NAJIHA ABD MANAN 2020-6-22
yes .. please help me also, to convert accelerometer data to displacement

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采纳的回答

Star Strider
Star Strider 2015-3-13
Use the cumtrapz function.
For example:
a = acceleration_vector_from_file;
t = time_vector_from_file;
v = cumtrapz(t, a); % Velocity
c = cumtrapz(t, v); % Displacement

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