Experimental investigation into the effects of exciter motions on the primary calibration of single-ended accelerometer

Hirunyapruk, Chompoonoot; Rattanangkul, Pairoj; Thummawut, Benjawon; Plangsangmas, Virat

doi:10.1016/j.measurement.2011.09.029

Cited by 6 publications

(3 citation statements)

References 1 publication

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“…The parasitic angular motion may appear in other types of exciters and vibration test benches. We found similar descriptions in works devoted to accelerometers testing and accelerometers gyro PCB calibration, [3], [9], and [10]. But this problem was not analyzed in the publications about vibration and shock immunity of MEMS gyros [11], [12].…”

Section: Behaviour Of Tira Shaker Table With Different Fixturesmentioning

confidence: 71%

MEMS gyro vibration immunity and its measurement with TIRA shaker

Nekrasov

Pavlova

Моисеев

2015

2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings

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This paper presents test results on vibration and shock immunity of MEMS gyroscope conducted with shakers TIRAvib 5222 and TYRA TV57315/LS. Due to exciter angular vibrations at low frequencies working range for gyro vibration testing begins from 200Hz. To check the shaker work B&K accelerometers and vibration immunity gyro ADXRS450 were used. Such elements of accessories as adapter for shaker, holding jig for mounting printed circuit board (PCB) with gyro, the PCB thickness may strongly influence on the testing results. The best result has been obtained with the use of steel circle of a small diameter as adapter for shaker and 2mm aluminum base for PCB. The test confirms an absence of false signals at the vibration frequencies less than 2kHz in the new modification of gyro with increased suspension resonant frequency. The gyro quadrature cancellation electrode system behaviour under vibration conditions was analyzed with the use of quasi-electric field strength control.

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Section: Behaviour Of Tira Shaker Table With Different Fixturesmentioning

confidence: 71%

MEMS gyro vibration immunity and its measurement with TIRA shaker

Nekrasov

Pavlova

Моисеев

2015

2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings

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“…In order to account for parasitic rigid-body motion, one normally measures in a number of points distributed symmetrically around the sensitivity axis of the device under test (DUT). Repeating measurement in many points is time consuming and the procedure is usually restricted to up to six positions [2,[6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Primary accelerometer calibration by scanning laser Doppler vibrometry

Sprecher

Hof

2020

Meas. Sci. Technol.

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A primary calibration system for vibration transducers based on laser Doppler vibrometry was complemented by a commercial scan unit. The data acquisition and analysis were optimized for accuracy and a novel procedure to visualize and compensate parasitic rigid-body motion was developed. Additionally, effects related to drift during the calibration process were explicitly taken into account and compensated, thereby allowing an automated measurement of spatial sensitivity distributions at hundreds of measurement positions with the same accuracy as a single-point primary calibration. The system was applied to study the influence of rocking and deforming motion on the apparent sensitivity of back-to-back vibration transducers during the calibration process. New insights were gained by interpreting the measured spatial sensitivity distributions as operational deflection shapes.

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“…The importance of accelerometer modeling for calibration purposes has been discussed in few studies [13,14]. Link et al [15] proposed a model comprised of a linear, second-order di erential equation with unknown coe cients.…”

Section: Introductionmentioning

confidence: 99%

An investigation into the accelerometer mounting effects on signal transmissibility in modal measurements

2017

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Abstract. The purpose of this study is to de ne a simple model and discuss the main e ects of the use of the sensors with imperfect mounting in experimental measurements. This paper presents a theoretical and experimental investigation into the e ects of di erent mounting methods of accelerometers on signal transmissibility in modal testing. In the theoretical part, a 2-Degree-Of Freedom (2-DOF) model is used, where the rst DOF accounts for the accelerometer seismic mass and Piezo-crystal and the second DOF represents the mounting interface dynamics. An experimental modal analysis is conducted on a simple steel free-free beam using impact hammer excitation. The time domain signals and Frequency Response Functions (FRFs) are measured in the cases of magnet, wax, and stud mounting. It is found that the method of mounting has a signi cant e ect on damping rates of measured responses. Although natural frequencies undergo no important changes, the quality of measured FRFs is degraded considerably.

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Experimental investigation into the effects of exciter motions on the primary calibration of single-ended accelerometer

Cited by 6 publications

References 1 publication

MEMS gyro vibration immunity and its measurement with TIRA shaker

MEMS gyro vibration immunity and its measurement with TIRA shaker

Primary accelerometer calibration by scanning laser Doppler vibrometry

An investigation into the accelerometer mounting effects on signal transmissibility in modal measurements

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