I have the value of acceleration in all 3-axis ax,ay,az in unit g. I need the magnitude of total acceleration, so that I used the formula, max_acc= sqrt(ax^2+ ay^2 + az^2) My question is, is my approach correct or not? If it is not correct, your any kind of suggestion will be a great help. Thanks in advance!
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Your formula correctly calculates the magnitude of total acceleration for a sample from the accelerometer. It seems a bit unclear what you mean by 'maximum'. – Sami Sallinen Feb 07 '16 at 19:19
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@sallinen, actually I meant 'maximum acceleration in a certain time period'. Thank you for clarifying. – Sefat Noor Orni Feb 07 '16 at 19:43
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Your approach is correct.
If you just want to have translational acceleration without gravity, you have to subtract the gravity first.
If your accelerometer for example is positioned in a way, that gravity is aligned with ay you have to calculate: acc = sqrt(ax^2 + (ay-g)^2 + az^2)
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