Integrating Accelerometer Time History Signals

The scripts in integrate_th.zip integrate an acceleration time history to a velocity time history and/or a velocity time history to a displacement time history.

The main script is: integrate_th.m

The remaining scripts are supporting functions.

Integrating acceleration to velocity typically causes a spurious offset in the velocity signal, which in turn causes a “ski slope” effect in the resulting displacement signal.

So options are included for fading, trend removal, and mean filtering.  These options must be used with “engineering judgment.”

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Here is a script for differentiating a time history  differ.m

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These scripts in acceleration_correction.zip correct an acceleration time history so that its corresponding velocity and displacement time histories each oscillate
about the zero baseline.

The main script is: acceleration_correction.m

The remaining scripts are supporting functions.

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– Tom Irvine

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