Reduction of calibration uncertainty due to mounting of three-axis accelerometers using the intrinsic properties model

Gaitan, Michael; Bautista, Iris Mariela López; Geist, Jon

doi:10.1088/1681-7575/abeccf

Cited by 21 publications

(23 citation statements)

References 6 publications

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“…Some references take uncertainty as an index to evaluate proposed methods, such as [35,36]. As a consequence, the repeatability and uncertainty of method M2 is analyzed.…”

Section: Experiments and Discussionmentioning

confidence: 99%

A method for improving the performance of centering rod surveying based on two-position correction

Dai¹,

Pan²,

Yang³

et al. 2022

Meas. Sci. Technol.

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Aiming at the problem that accelerometer’s bias and scale factor error decrease the measurement accuracy of centering rod surveying, a performance improving method for pitch measurement is proposed. The error model of centering rod surveying is built so that the relationship between pitch measurement error and accelerometer’s bias and scale factor error are clear. Numerical simulations are conduced out and the error variation is revealed. A two-position correction method is come up and twelve verification experiments are carried out. After correction, the measurement error is reduced from a few centimeters to submillimeter scale. Experimental results illustrate that the accuracy of pitch measurement is improved effectively, which meets the requirements for use. Three repeated experiments are carried out, the calculated uncertainties are 0.053 %, 0.035 % and 0.027 % separately, which indicates the feasibility and effectiveness of the proposed method in practical applications. It can provide some guidance for improving the performance of centering rod surveying.

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“…Some references take uncertainty as an index to evaluate proposed methods, such as [35,36]. As a consequence, the repeatability and uncertainty of method M2 is analyzed.…”

Section: Experiments and Discussionmentioning

confidence: 99%

A method for improving the performance of centering rod surveying based on two-position correction

Dai¹,

Pan²,

Yang³

et al. 2022

Meas. Sci. Technol.

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“…This means that systematic effects due to possible misalignments among sensing elements and differences among the proper sensitivities were negligible, at less than 1 dB. The complete description of the method to be applied for calculation can be found in [ 51 ]; in this application the misalignment was assessed in dynamic conditions in the gravity field instead of in static conditions.…”

Section: Methodsmentioning

confidence: 99%

Highly Reliable Multicomponent MEMS Sensor for Predictive Maintenance Management of Rolling Bearings

et al. 2023

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In the field of vibration monitoring and control, the use of low-cost multicomponent MEMS-based accelerometer sensors is nowadays increasingly widespread. Such sensors allow implementing lightweight monitoring systems with low management costs, low power consumption and a small size. However, for the monitoring systems to provide trustworthy and meaningful data, the high accuracy and reliability of sensors are essential requirements. Consequently, a metrological approach to the calibration of multi-component accelerometer sensors, including appropriate uncertainty evaluations, are necessary to guarantee traceability and reliability in the frequency domain of data provided, which nowadays is not fully available. In addition, recently developed metrological characterizations at the microscale level allow to provide detailed and accurate quantification of the enhanced technical performance and the responsiveness of these sensors. In this paper, a dynamic calibration procedure is applied to provide the sensitivity parameters of a low-cost, multicomponent MEMS sensor accelerometer prototype (MDUT), designed, developed and realized at the University of Siena, conceived for rolling bearings vibration monitoring in a broad frequency domain (from 10 Hz up to 25 kHz). The calibration and the metrological characterization of the MDUT are carried out by comparison to a reference standard transducer, at the Primary Vibration Laboratory of the National Institute of Metrological Research (INRiM).

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“…In this way, it is possible to correct reference theoretical accelerations along MEMS axes in equations ( 1)-( 3), into a x , a y , a z of equations ( 5)- (7), where a x',syst , a y',syst , a z',syst and φ x',syst , φ y',syst , φ z',syst are, respectively, the amplitudes and the phase differences, with respect to the reference signal a ref , of the spurious components along x'-, y'-and z'-axis. The amplitude of spurious components is, as average, around 10% of the reference acceleration.…”

Section: Evaluation Of Systematic Effects and Correction Of The Refer...mentioning

confidence: 99%

“…In the particular case of digital MEMS accelerometers, the sensitivity is generally provided by the manufacturer without traceable methods and is obtained in static conditions, whereas dynamic response, as a function of frequency, is often barely known or completely disregarded. On the other hand, traceable calibration methods for digital sensors, including sensitivity parameter and an appropriate uncertainty evaluation are necessary [1,6] in order to consider digital MEMS accelerometers as actual measurement devices in the frequency domain, in analogy to inertial 3-axis accelerometers, calibrated in the local gravitational field [7,8].…”

Section: Introductionmentioning

confidence: 99%

Traceability of digital 3-axis MEMS accelerometer: simultaneous determination of main and transverse sensitivities in the frequency domain

Prato¹,

Mazzoleni²,

Schiavi³

2020

Metrologia

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Traceability of digital sensors is a metrological challenge, as well as a present priority, as stated within the emerging metrology requirements for the future in the Strategy 2017 to 2027 document of the Consultative Committee for Acoustics, Ultrasound, and Vibration of BIPM. From this perspective, in this paper, a calibration system for 3-axis digital MEMS accelerometers is described, in order to simultaneously evaluate the main and transverse sensitivities in the frequency domain (from 5 Hz up to 3 kHz) and in static conditions, together with a proper sensitivity parameter for digital outputs, thus providing the required metrological traceability. The procedure, based on the comparison to a reference transducer, involves a single-axis excitation of inclined planes. Experimental results are expressed in terms of exploitation and sensitivities matrices. Overall expanded uncertainties of the main terms are in the order of 2%, in dynamic conditions, and 1%-2% in static conditions. The feasibility of this system can be exploited for the development of manufacturers' in-line control systems and for the investigation of large-scale calibration procedures.

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Reduction of calibration uncertainty due to mounting of three-axis accelerometers using the intrinsic properties model

Cited by 21 publications

References 6 publications

A method for improving the performance of centering rod surveying based on two-position correction

A method for improving the performance of centering rod surveying based on two-position correction

Highly Reliable Multicomponent MEMS Sensor for Predictive Maintenance Management of Rolling Bearings

Traceability of digital 3-axis MEMS accelerometer: simultaneous determination of main and transverse sensitivities in the frequency domain

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