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...
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| Format: | Article |
| Language: | English |
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MDPI AG
2017-10-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/17/11/2471 |
| _version_ | 1798040853578514432 |
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| author | Xiangqing Huang Zhongguang Deng Yafei Xie Zhu Li Ji Fan Liangcheng Tu |
| author_facet | Xiangqing Huang Zhongguang Deng Yafei Xie Zhu Li Ji Fan Liangcheng Tu |
| author_sort | Xiangqing Huang |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-04-11T22:13:24Z |
| format | Article |
| id | doaj.art-2acda5f8eb71487985d64f59bf5715c3 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T22:13:24Z |
| publishDate | 2017-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-2acda5f8eb71487985d64f59bf5715c32022-12-22T04:00:29ZengMDPI 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 |
| 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 |
| title | 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_short | A New Scale Factor Adjustment Method for Magnetic Force Feedback Accelerometer |
| title_sort | new scale factor adjustment method for magnetic force feedback accelerometer |
| topic | accelerometer adjustment of scale factor magnetic force feedback gravity gradient instrument |
| url | https://www.mdpi.com/1424-8220/17/11/2471 |
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