Mechanical influences in sinusoidal force measurement

Schlegel, Christian; Kiekenap, Gabriela; Kahmann, Holger; Kumme, Rolf

doi:10.21014/acta_imeko.v4i2.206

Cited by 8 publications

(5 citation statements)

References 1 publication

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“…This has also been observed by other workers [15,18]. The error in the measured displacement arising from misalignment and angular motion is analyzed in Appendix A.…”

Section: Uncertainty Analysissupporting

confidence: 79%

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Traceable dynamic calibration of force transducers by primary means

Vlajic

Chijioke

2016

Metrologia

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We describe an apparatus for traceable, dynamic calibration of force transducers using harmonic excitation, and report calibration measurements of force transducers using this apparatus. In this system, the force applied to the transducer is produced by the acceleration of an attached mass, and is determined according to Newton’s second law, F = ma. The acceleration is measured by primary means, using laser interferometry. The capabilities of this system are demonstrated by performing dynamic calibrations of two shear-web-type force transducers up to a frequency of 2 kHz, with an expanded uncertainty below 1.2 %. We give an accounting of all significant sources of uncertainty, including a detailed consideration of the effects of dynamic tilting (rocking), which is a leading source of uncertainty in such harmonic force calibration systems.

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“…This has also been observed by other workers [15,18]. The error in the measured displacement arising from misalignment and angular motion is analyzed in Appendix A.…”

Section: Uncertainty Analysissupporting

confidence: 79%

“…This uncertainty is in general a function of frequency. This has also been observed by other workers [15,[17][18]. The error in the measured displacement arising from misalignment and angular motion is analyzed in appendix A (see the supplementary material (stacks.iop.org/MET/53/S136/mmedia)).…”

Section: 21supporting

confidence: 75%

Traceable dynamic calibration of force transducers by primary means

Vlajic

Chijioke

2016

Metrologia

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“…So far, research has tended to focus either on the modal analysis of the measurement setup with the assumption of a lumped mass shaker armature [5] or on the force transducer only without the shaker and the load mass [6]. To investigate the dynamic behaviour of the complete mechanical structure of a periodic force measurement setup, a Finite Element (FE) model has been developed and verified to carry out the modal and harmonic analyses.…”

Section: Introductionmentioning

confidence: 99%

Influences of shaker armature dynamics on periodic force measurement

Hassan¹,

Schlegel

Kumme

2019

ACTA IMEKO

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In this article, we investigate the influence of the shaker armature’s mechanical structure on periodic force measurement, with particular emphasis on measurement uncertainty. In order to perform modal and harmonic analyses of the measurement setup, a finite element model was iteratively developed. The model was validated by measurements with a scanning vibrometer. The results show that the dynamic behaviour of the shaker armature should be taken into consideration before carrying out a periodic force measurement.

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“…In the calibration of the force transducers using oscillation force [4][5][6][7], a mass is placed on the force transducer. The inertial force is generated by a shaker.…”

Section: Introductionmentioning

confidence: 99%

New technique for dynamic calibration of a force transducer using a drop ball tester

Satria

Takita

Nasbey

et al. 2018

Meas. Sci. Technol.

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A method to calibrate a force transducer under dynamic conditions has been developed. Calibration is achieved by a drop ball test based on the levitation mass method using an optical interferometer. From the conducted experiments, the output of the force transducer could be corrected, in line with the previous paper written by the authors. Moreover, the dynamic correction coefficient could be obtained by this method, even without an expensive air slider, which was used in our previous method. The calibration performed by the developed method proved to be very significant in correcting the dynamic force measurement error by the force transducer with a very small root mean square (RMS) error compared to the results of measurement in the absence of calibration and dynamic correction. The RMS error of measurement result by the force transducer with dynamic calibration and dynamic correction using the developed method is about 1.6 N. This error is equivalent to 1% of the maximum force applied to the force transducer, which is approximately 160 N.

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Mechanical influences in sinusoidal force measurement

Cited by 8 publications

References 1 publication

Traceable dynamic calibration of force transducers by primary means

Traceable dynamic calibration of force transducers by primary means

Influences of shaker armature dynamics on periodic force measurement

New technique for dynamic calibration of a force transducer using a drop ball tester

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