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Suitability of MEMS Accelerometers for Condition Monitoring: An experimental study

View Article: PubMed Central - PubMed

ABSTRACT

With increasing demands for wireless sensing nodes for assets control and condition monitoring; needs for alternatives to expensive conventional accelerometers in vibration measurements have been arisen. Micro-Electro Mechanical Systems (MEMS) accelerometer is one of the available options. The performances of three of the MEMS accelerometers from different manufacturers are investigated in this paper and compared to a well calibrated commercial accelerometer used as a reference for MEMS sensors performance evaluation. Tests were performed on a real CNC machine in a typical industrial environmental workshop and the achieved results are presented.

No MeSH data available.


Phase of the frequency response function for the MEMS accelerometers
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f16-sensors-08-00784: Phase of the frequency response function for the MEMS accelerometers

Mentions: To determine the linearity in the measurement over the frequency band of excitation and phase shift, the frequency response function (FRF- the transfer function in frequency domain) has also been calculated assuming the responses of the MEMS accelerometer as the output and the reference accelerometer responses as the input. Both the amplitude and phase FRF plots are shown in Figures 15 and 16. The response spectra shown in Figure 14; shows satisfactory performance for MEMS (B) and for MEMS (A) for frequencies over 150 Hz. MEMS (C) performed not very well and this is confirmed in the FRF and phase shift plots; shown in Figures 15 and 16.


Suitability of MEMS Accelerometers for Condition Monitoring: An experimental study
Phase of the frequency response function for the MEMS accelerometers
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3672998&req=5

f16-sensors-08-00784: Phase of the frequency response function for the MEMS accelerometers
Mentions: To determine the linearity in the measurement over the frequency band of excitation and phase shift, the frequency response function (FRF- the transfer function in frequency domain) has also been calculated assuming the responses of the MEMS accelerometer as the output and the reference accelerometer responses as the input. Both the amplitude and phase FRF plots are shown in Figures 15 and 16. The response spectra shown in Figure 14; shows satisfactory performance for MEMS (B) and for MEMS (A) for frequencies over 150 Hz. MEMS (C) performed not very well and this is confirmed in the FRF and phase shift plots; shown in Figures 15 and 16.

View Article: PubMed Central - PubMed

ABSTRACT

With increasing demands for wireless sensing nodes for assets control and condition monitoring; needs for alternatives to expensive conventional accelerometers in vibration measurements have been arisen. Micro-Electro Mechanical Systems (MEMS) accelerometer is one of the available options. The performances of three of the MEMS accelerometers from different manufacturers are investigated in this paper and compared to a well calibrated commercial accelerometer used as a reference for MEMS sensors performance evaluation. Tests were performed on a real CNC machine in a typical industrial environmental workshop and the achieved results are presented.

No MeSH data available.