Increasing the dynamic range of electrostatic accelerometers by adjusting the zero-position

Abstract Electrostatic accelerometers are highly suitable for space science experiments due to their high resolution. Current accelerometers face the challenge of balancing a large measurement range with high resolution. To address this, this paper proposes an adjustable zero-position control strategy that decouples feedback acceleration and stiffness acceleration, enabling frequency-division measurement. This approach achieves over four times expanded measurement range of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mrow> <mml:mo>±</mml:mo> <mml:mn>3</mml:mn> <mml:mo>×</mml:mo> <mml:mrow> <mml:msup> <mml:mn>10</mml:mn> <mml:mrow> <mml:mo>−</mml:mo> <mml:mn>4</mml:mn> </mml:mrow> </mml:msup> </mml:mrow> <mml:mrow> <mml:mtext>m</mml:mtext> </mml:mrow> <mml:mstyle scriptlevel="0"/> <mml:mrow> <mml:msup> <mml:mrow> <mml:mtext>s</mml:mtext> </mml:mrow> <mml:mrow> <mml:mo>−</mml:mo> <mml:mrow> <mml:mtext>2</mml:mtext> </mml:mrow> </mml:mrow> </mml:msup> </mml:mrow> </mml:mrow> </mml:math> (based on the normal range <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mrow> <mml:mo>±</mml:mo> <mml:mn>7</mml:mn> <mml:mo>×</mml:mo> <mml:mrow> <mml:msup> <mml:mn>10</mml:mn> <mml:mrow> <mml:mo>−</mml:mo> <mml:mn>5</mml:mn> </mml:mrow> </mml:msup> </mml:mrow> <mml:mrow> <mml:mtext>m</mml:mtext> </mml:mrow> <mml:mstyle scriptlevel="0"/> <mml:mrow> <mml:msup> <mml:mrow> <mml:mtext>s</mml:mtext> </mml:mrow> <mml:mrow> <mml:mo>−</mml:mo> <mml:mrow> <mml:mtext>2</mml:mtext> </mml:mrow> </mml:mrow> </mml:msup> </mml:mrow> </mml:mrow> </mml:math> of GRACE-FO) without compromising resolution. The method reduces the impact of quasi-DC input disturbances and extends the dynamic range of electrostatic accelerometers, making it applicable to next-generation gravity satellites.

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Publication Details

Journal
Measurement Science and Technology
Published
2025-06-18
DOI
https://doi.org/10.1088/1361-6501/ade5c3
Primary Topic
Inertial Sensor and Navigation
Type
article
Field-Weighted Citation Impact
0.00

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article

Increasing the dynamic range of electrostatic accelerometers by adjusting the zero-position

Ming Hu, Yanzheng Bai, Annan Zhou, Zebing Zhou et al.
Measurement Science and Technology
Inertial Sensor and Navigation
article

Increasing the dynamic range of electrostatic accelerometers by adjusting the zero-position

Ming Hu, Yanzheng Bai, Annan Zhou, Zebing Zhou, Junjie Zhou
article en

Abstract

Abstract Electrostatic accelerometers are highly suitable for space science experiments due to their high resolution. Current accelerometers face the challenge of balancing a large measurement range with high resolution. To address this, this paper proposes an adjustable zero-position control strategy that decouples feedback acceleration and stiffness acceleration, enabling frequency-division measurement. This approach achieves over four times expanded measurement range of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mrow> <mml:mo>±</mml:mo> <mml:mn>3</mml:mn> <mml:mo>×</mml:mo> <mml:mrow> <mml:msup> <mml:mn>10</mml:mn> <mml:mrow> <mml:mo>−</mml:mo> <mml:mn>4</mml:mn> </mml:mrow> </mml:msup> </mml:mrow> <mml:mrow> <mml:mtext>m</mml:mtext> </mml:mrow> <mml:mstyle scriptlevel="0"/> <mml:mrow> <mml:msup> <mml:mrow> <mml:mtext>s</mml:mtext> </mml:mrow> <mml:mrow> <mml:mo>−</mml:mo> <mml:mrow> <mml:mtext>2</mml:mtext> </mml:mrow> </mml:mrow> </mml:msup> </mml:mrow> </mml:mrow> </mml:math> (based on the normal range <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mrow> <mml:mo>±</mml:mo> <mml:mn>7</mml:mn> <mml:mo>×</mml:mo> <mml:mrow> <mml:msup> <mml:mn>10</mml:mn> <mml:mrow> <mml:mo>−</mml:mo> <mml:mn>5</mml:mn> </mml:mrow> </mml:msup> </mml:mrow> <mml:mrow> <mml:mtext>m</mml:mtext> </mml:mrow> <mml:mstyle scriptlevel="0"/> <mml:mrow> <mml:msup> <mml:mrow> <mml:mtext>s</mml:mtext> </mml:mrow> <mml:mrow> <mml:mo>−</mml:mo> <mml:mrow> <mml:mtext>2</mml:mtext> </mml:mrow> </mml:mrow> </mml:msup> </mml:mrow> </mml:mrow> </mml:math> of GRACE-FO) without compromising resolution. The method reduces the impact of quasi-DC input disturbances and extends the dynamic range of electrostatic accelerometers, making it applicable to next-generation gravity satellites.

Measurement Science and TechnologyVol. 36(7)
Huazhong Agricultural University (CN)
National Natural Science Foundation of China
Affordable and clean energy
Openalex Percentile: Top 82%
Inertial Sensor and Navigation
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