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I am measuring the acceleration of an oscillating body with a triaxial accelerometer. I want to derive some kind of vector average of the 3 channel output. Someone suggested using

x= √(a squared + b squared + c squared)

... where x is the vector average and a, b and c are the accelerometry readings for each channel. Someone else told me that this isn't ideal but I don't really understand why not. Please help - is it better to just take the mean of all 3... or even just to choose the largest amplitude channel and use that?

Thanks

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# How to derive an average output from a triaxial accelerometer

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