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  1. sanchezb

    Acceleration to Displacement - Filtering Issue

    I'll try a bandpass
  2. sanchezb

    Filtering Issue

    this is not for school, the green line is a completely different instrument... advice is welcome...
  3. sanchezb

    Filtering Issue

    the green line is the correct representation of the motion
  4. sanchezb

    Filtering Issue

    Here is most of the code clear clc home load ACCfilter load ElapsedTime %definitions Fs = 32; t = ElapsedTime; % sampling range yno = ACCfilter; [B,A] = butter(5,0.5/(Fs/2),'high'); y = filter(B,A,yno); %plot in time domain subplot(2, 1, 1); % plot(t, y,'r'); grid on % plot with grid...
  5. sanchezb

    Acceleration to Displacement - Filtering Issue

    Here is the code clear clc home load ACCfilter load ElapsedTime %definitions Fs = 32; t = ElapsedTime; % sampling range yno = ACCfilter; [B,A] = butter(5,0.5/(Fs/2),'high'); y = filter(B,A,yno); %plot in time domain subplot(2, 1, 1); % plot(t, y,'r'); grid on % plot with grid...
  6. sanchezb

    Filtering Issue

    Here is a more high res photohttp://i.imgur.com/YtK0X.png
  7. sanchezb

    Acceleration to Displacement - Filtering Issue

    I am using fast fourier transforms to convert raw acceleration to displacement. I am able to get extremely close to expected results; however, I am having issues at the beginning of the dataset. I believe there may be an issue with the filter I am using. Here is the code for the butterworth...
  8. sanchezb

    Filtering Issue

    I am using fast fourier transforms to convert raw acceleration to displacement. I am able to get extremely close to expected results; however, I am having issues at the beginning of the dataset. I believe there may be an issue with the filter I am using. Here is the code for the butterworth...
  9. sanchezb

    Matlab Accelerometer Data to Velocity V2.0

    Thanks for the help guys, but the input is just a regular sin wave that I'm making noisier and nosier. I've called it acceleration for now before I actually start putting in data from the source. I don't think a high pass filter would help in this situation because after the FFT the results (ie...
  10. sanchezb

    Matlab Accelerometer Data to Velocity V2.0

    thread384-296403 The aforementioned thread presents a code that deals with a normal sin wave quite well; however, I introduced noise into the code by adding a 2.5hz sin wave, 5hz sin wave and 25hz sin wave, which produced some unexpected results. See the attached graph for further details, the...

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