Single-rotor integrating gyroscopic gravimeter

Ткачук, Андрій Геннадійович; Безвесільна, Олена Миколаївна; Dobrzhansky, Oleksandr; Остапчук, Анна Анатоліївна

doi:10.1088/1742-6596/1840/1/012023

Cited by 7 publications

(3 citation statements)

References 5 publications

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“…The article "Single-rotor integrating gyroscopic gravimeter" [58] of Andrii Tkachuk et al describes the gravity acceleration sensor (GAS) design, the technical characteristics of which provide an increase in the static transfer constant of the GAS, the ability to determine the current static transfer constant of the GAS, reducing the level of noise effects in the output signal of GAS. The acceleration vector components from the side of a moving vehicle add a noise to the gravity vector components.…”

Section: Computer Science and Computer Science Educationmentioning

confidence: 99%

XII International Conference on Mathematics, Science and Technology Education: conference report

2021

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This article represents the proceedings of the XII International Conference on Mathematics, Science and Technology Education (ICon-MaSTEd 2020) held at the Kryvyi Rih State Pedagogical University, Ukraine, 15–17 October 2020. Background information and the organizational structure of the meeting, a summary of the papers, and acknowledgements of the contributions of the many people who made the conference a success are presented.

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Section: Computer Science and Computer Science Educationmentioning

confidence: 99%

XII International Conference on Mathematics, Science and Technology Education: conference report

2021

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“…The error coefficients of the bias and the scale factor of the PIGA are generally calibrated by applying inputs of ±1

(

is the acceleration of gravity) on the PIGA through the positive and negative rollover tests under the conditions of a gravity field using an indexing table or a three-axis turntable [ 16 , 17 , 18 ]. In the past few decades, the focus of studies on PIGAs has been on the accuracy improvement of the bias and scale factor, and great results have been achieved as the bias stability of the PIGA can reach 0.1 µg and the scale factor stability is better than 0.1 ppm [ 19 , 20 ]. At present, the nonlinear error is the most critical factor restricting the measurement accuracy of the PIGA.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Suppression of Nonlinear Error of Pendulous Integrating Gyroscopic Accelerometer at Instrument Level

Zhou

Yang

Niu

et al. 2023

Sensors

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The error coefficients of the pendulous integrating gyroscopic accelerometer (PIGA) mainly include the bias, scale factor, and nonlinear error. Previous works have fully studied and suppressed the bias and scale factor of PIGAs. At present, the nonlinear error is the most critical factor restricting the measurement accuracy of PIGAs. To address this barrier, a study on the analysis and suppression of the nonlinear error of PIGAs at the instrument level was carried out. Firstly, the error model of a PIGA is established by kinematics and dynamics analyses. Then, nonlinear error is analyzed based on the established model. Finally, a suppression method for the nonlinear error is proposed based on the analysis results. The nonlinear error analysis found that (1) the nonlinear error includes a quadratic term error caused by unequal inertia and the inertia product, cross-coupling error is caused by lateral accelerations, and error is caused by unequal stiffness; (2) unequal inertia and the inertia product were the most critical factors resulting in nonlinear error. Based on the results in the nonlinear error analysis, the suppression method for error focuses on unequal inertia and the inertia product. The proposed method of analysis and suppression was validated experimentally as the quadratic term coefficient was reduced by an order of magnitude from 1.9 × 10−6/g0 to 1.91 × 10−7/g0.

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“…The measurement error of PIGA is mainly caused by bias, scale factor and nonlinear error [ 14 , 15 ]. In the past few decades, the error coefficients of the bias and scale factor of PIGA have been fully studied and effectively reduced [ 16 , 17 , 18 ]; and satisfactory results have been achieved as the bias stability of PIGA can now be reduced to 0.1 µg and scale factor stability is better than 0.1 ppm [ 19 , 20 ]. Thus, nonlinear error has become the most critical factor restricting the measurement accuracy of PIGA with its improvement [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Precise Measurement and Compensation of the Micro Product of Inertia for Float Assembly in Pendulous Integrating Gyroscopic Accelerometers

Zhou

Yang

Niu

et al. 2023

Sensors

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Nonlinear error has become the most critical factor restricting the measurement accuracy of pendulous integrating gyroscopic accelerometers (PIGA) during their improvement. The key to nonlinear error suppression for PIGA is the precise measurement and compensation of the micro product of inertia (MPOI) of the float assembly. However, the existing equipment and procedure for product of inertia (POI) measurement and compensation do not meet the accuracy requirements for MPOI. To solve this problem, novel equipment and procedures are proposed for the measurement and compensation of MPOI. The principle of the proposed measurement method is to simulate the error produced by MPOI in PIGA by using a single-axis turntable to rotate the float assembly along the eccentric axis to generate a centrifugal moment due to MPOI. The principle of the proposed compensation method is to remove the asymmetric mass to reduce the MPOI to zero. Through experimental validation, it is concluded that: (1) the measurement and compensation accuracy of the proposed method are better than 1 × 10−10 kg·m2 and 3 × 10−10 kg·m2, respectively; (2) the proposed method is validated as the MPOI is reduced from 7.3 × 10−9 kg·m2 to 3 × 10−10 kg·m2 for a real float assembly in PIGA, and the quadratic error of PIGA is reduced from 10−5/g0 to 3 × 10−7/g0.

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Single-rotor integrating gyroscopic gravimeter

Cited by 7 publications

References 5 publications

XII International Conference on Mathematics, Science and Technology Education: conference report

XII International Conference on Mathematics, Science and Technology Education: conference report

Analysis and Suppression of Nonlinear Error of Pendulous Integrating Gyroscopic Accelerometer at Instrument Level

Precise Measurement and Compensation of the Micro Product of Inertia for Float Assembly in Pendulous Integrating Gyroscopic Accelerometers

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