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MEMS Inertial Sensors

Q&A ADXL350 static acceleration

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karu on Apr 1, 2020

Hi

I am using ADXL350 to detect the angle of rotation for certaim range. Eg. 0 to 60deg, but sometime data is over-range. may be because the data include dynamic acceleration (due to vibration). Is it possible to measure only static acceleration?

0 John.Tuazon

on Apr 2, 2020 2:32 PM
Hi karu,

Thank you for your use of ADXL350. The data being over range is due to vibration rectification effects. It could be maybe that your chosen g-range isn't sufficient enough to fully capture the gravity+vibration accelerations. Here is an article that explains more of VRE (https://www.analog.com/media/en/technical-documentation/tech-articles/vibration-rectification-in-mems-accelerometers.pdf )

Also you can limit the effects of VRE by choosing an appropriate bandwidth for you to reject high frequency vibrations. Hope this helps.

Best Regards,
John
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