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How precise is a modern accelerometer? Are there any scientific articles discussing how precise they measure acceleration, free fall, vibration and so on.
Thank you
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Ha, so are you working on a master's project or something :D? Anyway, quick google scholar search for "analysis of measurement errors in MEMS accelerometers" lead to the following paper:
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"Experimental Evaluation and Comparative Analysis of Commercial variable-capacitance MEMS accelerometers". Acar, C. and Shkel, A. M. Journal of Micromechanics and Microengineering, 13 (2003), pp. 634-645.
Abstract:
This paper reports the experimental analysis of commercially available variable-capacitance MEMS accelerometers, characterized under standardized tests. Capacitive MEMS sensors of the same low-level input acceleration range with various mechanical sensing element designs, materials, fabrication technologies and price ranges were selected for evaluation. The selected sensors were characterized using ANSI and NIST certified testing equipment and under the same testing conditions; and their sensitivity, resolution, linearity, frequency response, transverse sensitivity, temperature response, noise level and long-term stability were tested and compared. The experimental results are then interpreted to provide an insight to advantages and disadvantages for using a particular mechanical design, fabrication technology, sensor material and the techniques for electronics integration and packaging of each specific sensor design.
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You were inquiring about the ADXL345 on the nano? This paper studies the ADXL210A (and other accelerometers). It has also been cited by 33 other papers, so maybe you can do another google scholar search to find more recent papers.
Let me know via PM if you are interested in the above paper and I will send you a copy (can't post it online for obvious copyright reasons).
Bharath
Honored Contributor
