A New Scale Factor Adjustment Method for Magnetic Force Feedback Accelerometer

A new and simple method to adjust the scale factor of a magnetic force feedback accelerometer is presented, which could be used in developing a rotating accelerometer gravity gradient instrument (GGI). Adjusting and matching the acceleration-to-current transfer function of the four accelerometers au...

Full description

Bibliographic Details
Main Authors: Xiangqing Huang, Zhongguang Deng, Yafei Xie, Zhu Li, Ji Fan, Liangcheng Tu
Format: Article
Language:English
Published: MDPI AG 2017-10-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/17/11/2471
id doaj-2acda5f8eb71487985d64f59bf5715c3
record_format Article
spelling doaj-2acda5f8eb71487985d64f59bf5715c32020-11-25T00:29:48ZengMDPI AGSensors1424-82202017-10-011711247110.3390/s17112471s17112471A New Scale Factor Adjustment Method for Magnetic Force Feedback AccelerometerXiangqing Huang0Zhongguang Deng1Yafei Xie2Zhu Li3Ji Fan4Liangcheng Tu5MOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, School of Physics, Huazhong University of Science and Technology, Wuhan 430074, ChinaMOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, School of Physics, Huazhong University of Science and Technology, Wuhan 430074, ChinaMOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, School of Physics, Huazhong University of Science and Technology, Wuhan 430074, ChinaSchool of Physics and Astronomy, Sun Yat-sen University, Guangzhou 510275, ChinaMOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, School of Physics, Huazhong University of Science and Technology, Wuhan 430074, ChinaMOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, School of Physics, Huazhong University of Science and Technology, Wuhan 430074, ChinaA new and simple method to adjust the scale factor of a magnetic force feedback accelerometer is presented, which could be used in developing a rotating accelerometer gravity gradient instrument (GGI). Adjusting and matching the acceleration-to-current transfer function of the four accelerometers automatically is one of the basic and necessary technologies for rejecting the common mode accelerations in the development of GGI. In order to adjust the scale factor of the magnetic force rebalance accelerometer, an external current is injected and combined with the normal feedback current; they are then applied together to the torque coil of the magnetic actuator. The injected current could be varied proportionally according to the external adjustment needs, and the change in the acceleration-to-current transfer function then realized dynamically. The new adjustment method has the advantages of no extra assembly and ease of operation. Changes in the scale factors range from 33% smaller to 100% larger are verified experimentally by adjusting the different external coefficients. The static noise of the used accelerometer is compared under conditions with and without the injecting current, and the experimental results find no change at the current noise level, which further confirms the validity of the presented method.https://www.mdpi.com/1424-8220/17/11/2471accelerometeradjustment of scale factormagnetic force feedbackgravity gradient instrument
collection DOAJ
language English
format Article
sources DOAJ
author Xiangqing Huang
Zhongguang Deng
Yafei Xie
Zhu Li
Ji Fan
Liangcheng Tu
spellingShingle Xiangqing Huang
Zhongguang Deng
Yafei Xie
Zhu Li
Ji Fan
Liangcheng Tu
A New Scale Factor Adjustment Method for Magnetic Force Feedback Accelerometer
Sensors
accelerometer
adjustment of scale factor
magnetic force feedback
gravity gradient instrument
author_facet Xiangqing Huang
Zhongguang Deng
Yafei Xie
Zhu Li
Ji Fan
Liangcheng Tu
author_sort Xiangqing Huang
title A New Scale Factor Adjustment Method for Magnetic Force Feedback Accelerometer
title_short A New Scale Factor Adjustment Method for Magnetic Force Feedback Accelerometer
title_full A New Scale Factor Adjustment Method for Magnetic Force Feedback Accelerometer
title_fullStr A New Scale Factor Adjustment Method for Magnetic Force Feedback Accelerometer
title_full_unstemmed A New Scale Factor Adjustment Method for Magnetic Force Feedback Accelerometer
title_sort new scale factor adjustment method for magnetic force feedback accelerometer
publisher MDPI AG
series Sensors
issn 1424-8220
publishDate 2017-10-01
description A new and simple method to adjust the scale factor of a magnetic force feedback accelerometer is presented, which could be used in developing a rotating accelerometer gravity gradient instrument (GGI). Adjusting and matching the acceleration-to-current transfer function of the four accelerometers automatically is one of the basic and necessary technologies for rejecting the common mode accelerations in the development of GGI. In order to adjust the scale factor of the magnetic force rebalance accelerometer, an external current is injected and combined with the normal feedback current; they are then applied together to the torque coil of the magnetic actuator. The injected current could be varied proportionally according to the external adjustment needs, and the change in the acceleration-to-current transfer function then realized dynamically. The new adjustment method has the advantages of no extra assembly and ease of operation. Changes in the scale factors range from 33% smaller to 100% larger are verified experimentally by adjusting the different external coefficients. The static noise of the used accelerometer is compared under conditions with and without the injecting current, and the experimental results find no change at the current noise level, which further confirms the validity of the presented method.
topic accelerometer
adjustment of scale factor
magnetic force feedback
gravity gradient instrument
url https://www.mdpi.com/1424-8220/17/11/2471
work_keys_str_mv AT xiangqinghuang anewscalefactoradjustmentmethodformagneticforcefeedbackaccelerometer
AT zhongguangdeng anewscalefactoradjustmentmethodformagneticforcefeedbackaccelerometer
AT yafeixie anewscalefactoradjustmentmethodformagneticforcefeedbackaccelerometer
AT zhuli anewscalefactoradjustmentmethodformagneticforcefeedbackaccelerometer
AT jifan anewscalefactoradjustmentmethodformagneticforcefeedbackaccelerometer
AT liangchengtu anewscalefactoradjustmentmethodformagneticforcefeedbackaccelerometer
AT xiangqinghuang newscalefactoradjustmentmethodformagneticforcefeedbackaccelerometer
AT zhongguangdeng newscalefactoradjustmentmethodformagneticforcefeedbackaccelerometer
AT yafeixie newscalefactoradjustmentmethodformagneticforcefeedbackaccelerometer
AT zhuli newscalefactoradjustmentmethodformagneticforcefeedbackaccelerometer
AT jifan newscalefactoradjustmentmethodformagneticforcefeedbackaccelerometer
AT liangchengtu newscalefactoradjustmentmethodformagneticforcefeedbackaccelerometer
_version_ 1725329895488225280