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A two-stage torsion pendulum to test AC control actuator of space inertial sensor for Tianqin.

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Title: A two-stage torsion pendulum to test AC control actuator of space inertial sensor for Tianqin.
Authors: Jiang, Yiyan1 (AUTHOR), Lu, Jinfeng1 (AUTHOR), Ouyang, Chaoli1 (AUTHOR), Zhou, Hongtao1 (AUTHOR), Hu, Ming1 (AUTHOR), Liu, Li1 (AUTHOR), Wu, Shuchao1 (AUTHOR) scwu@hust.edu.cn, Zhou, Zebing1 (AUTHOR) zhouzb@hust.edu.cn
Source: Measurement Science & Technology. Jan2026, Vol. 37 Issue 4, p1-11. 11p.
Subjects: Electrostatic actuators, Inertial navigation systems, Pendulums, Sensitivity analysis, Multi-degree of freedom, Gravitational wave detectors
Abstract: To realize the free falling test mass (TM) in gravitational wave detection in space, an alternative current (AC) electrostatic control strategy is proposed and developed. It is significant to test and verify the AC control actuation scheme on the ground. In this paper, a two-stage torsion pendulum is used to test the performance of the AC control actuator of inertial sensor for Tianqin project. First, the pendulum facility combined with a TM, a capacitive position sensor and an AC control actuator is constructed. Experimental results show that the sensitivities of the pendulum achieve 4.2 × 10−11 N Hz−1/2 at 6 mHz and 1.6 × 10−13 Nm Hz−1/2 at 15 mHz, respectively, and the pendulum provides a chance to realize the performance test of two degree-of-freedom sensitivities of the actuator, experimental verification of AC control strategy and so on, which is first reported to test performance of the AC control actuator of a space inertial sensor on the ground. [ABSTRACT FROM AUTHOR]
Copyright of Measurement Science & Technology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 190858038
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  Label: Title
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  Data: A two-stage torsion pendulum to test AC control actuator of space inertial sensor for Tianqin.
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  Data: <searchLink fieldCode="AR" term="%22Jiang%2C+Yiyan%22">Jiang, Yiyan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lu%2C+Jinfeng%22">Lu, Jinfeng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ouyang%2C+Chaoli%22">Ouyang, Chaoli</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhou%2C+Hongtao%22">Zhou, Hongtao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hu%2C+Ming%22">Hu, Ming</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Li%22">Liu, Li</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Shuchao%22">Wu, Shuchao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> scwu@hust.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhou%2C+Zebing%22">Zhou, Zebing</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zhouzb@hust.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Measurement+Science+%26+Technology%22">Measurement Science & Technology</searchLink>. Jan2026, Vol. 37 Issue 4, p1-11. 11p.
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  Data: <searchLink fieldCode="DE" term="%22Electrostatic+actuators%22">Electrostatic actuators</searchLink><br /><searchLink fieldCode="DE" term="%22Inertial+navigation+systems%22">Inertial navigation systems</searchLink><br /><searchLink fieldCode="DE" term="%22Pendulums%22">Pendulums</searchLink><br /><searchLink fieldCode="DE" term="%22Sensitivity+analysis%22">Sensitivity analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Multi-degree+of+freedom%22">Multi-degree of freedom</searchLink><br /><searchLink fieldCode="DE" term="%22Gravitational+wave+detectors%22">Gravitational wave detectors</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: To realize the free falling test mass (TM) in gravitational wave detection in space, an alternative current (AC) electrostatic control strategy is proposed and developed. It is significant to test and verify the AC control actuation scheme on the ground. In this paper, a two-stage torsion pendulum is used to test the performance of the AC control actuator of inertial sensor for Tianqin project. First, the pendulum facility combined with a TM, a capacitive position sensor and an AC control actuator is constructed. Experimental results show that the sensitivities of the pendulum achieve 4.2 × 10−11 N Hz−1/2 at 6 mHz and 1.6 × 10−13 Nm Hz−1/2 at 15 mHz, respectively, and the pendulum provides a chance to realize the performance test of two degree-of-freedom sensitivities of the actuator, experimental verification of AC control strategy and so on, which is first reported to test performance of the AC control actuator of a space inertial sensor on the ground. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Measurement Science & Technology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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        Value: 10.1088/1361-6501/ae2b29
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      – Code: eng
        Text: English
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        PageCount: 11
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    Subjects:
      – SubjectFull: Electrostatic actuators
        Type: general
      – SubjectFull: Inertial navigation systems
        Type: general
      – SubjectFull: Pendulums
        Type: general
      – SubjectFull: Sensitivity analysis
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      – SubjectFull: Multi-degree of freedom
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      – SubjectFull: Gravitational wave detectors
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      – TitleFull: A two-stage torsion pendulum to test AC control actuator of space inertial sensor for Tianqin.
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            NameFull: Jiang, Yiyan
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              M: 01
              Text: Jan2026
              Type: published
              Y: 2026
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