Residual analysis & Low Pass Butterworth filter

Question

Cristian Mesquida 2019-3-2

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/447835-residual-analysis-low-pass-butterworth-filter

回答： André Ivaniski Mello 2019-11-11

Force data.xlsx

Hi, I am a PhD student in swimming biomechanics.

For my first PhD study I will be using force-time curve data and I am interested in how to smooth it. I would like to know how to apply a Butterworth low pass filter and define the cut-off frequency by residual analysis by in MATLAB. The sampling frequency is 333Hz. Find attached the a file with the force data.

I would appreciate whether you could tell me how to define the cut-off frequency by residual analysis and how to apply a Butterworth low pass filter with the selected cut-off frequency.

Thanks in advance