Category Archives: Uncategorized

OpenWave #7 : Displacement measurement results – peak detect vs zero crossing

This post will detail an experiment in which the wave sensor was attached to a rotating arm at three different diameters. These diameters were 40cm, 60cm and 80cm. For each diameter, measurements were taken at two speeds to get an … Continue reading

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OpenWave #6 : Getting vertical displacement working

In post #5 I outlined the steps used to go from vertical acceleration to vertical displacement and how the results were completely off. I think I’ve figured out what was going wrong. The reason why each of the displacement graphs … Continue reading

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OpenWave #5 : The displacement calculation problem

In this post I will go into detail about the steps I’m currently using to go from vertical acceleration data from the IMU to vertical displacement and the issues I’m having. Step 1: Getting acceleration data The first step is … Continue reading

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OpenWave #4 : Observations on vertical displacement

Some observations on vertical displacement: The idea of the time series displacement graph is that you can double integrate acceleration to get displacement but also periodically reset the integration to prevent massive integral drift. At the moment, the python script … Continue reading

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