Measurement Method of Magnetic Field for the Wire Suspended Micro-Pendulum Accelerometer
Force producer is one of the core components of a Wire Suspended Micro-Pendulum Accelerometer; and the stability of permanent magnet in the force producer determines the consistency of the acceleration sensor’s scale factor. For an assembled accelerometer; direct measurement of magnetic field stren...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2015-04-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/15/4/8527 |
| _version_ | 1798041878561554432 |
|---|---|
| author | Yongle Lu Leilei Li Ning Hu Yingjun Pan Chunhua Ren |
| author_facet | Yongle Lu Leilei Li Ning Hu Yingjun Pan Chunhua Ren |
| author_sort | Yongle Lu |
| collection | DOAJ |
| description | Force producer is one of the core components of a Wire Suspended Micro-Pendulum Accelerometer; and the stability of permanent magnet in the force producer determines the consistency of the acceleration sensor’s scale factor. For an assembled accelerometer; direct measurement of magnetic field strength is not a feasible option; as the magnetometer probe cannot be laid inside the micro-space of the sensor. This paper proposed an indirect measurement method of the remnant magnetization of Micro-Pendulum Accelerometer. The measurement is based on the working principle of the accelerometer; using the current output at several different scenarios to resolve the remnant magnetization of the permanent magnet. Iterative Least Squares algorithm was used for the adjustment of the data due to nonlinearity of this problem. The calculated remnant magnetization was 1.035 T. Compared to the true value; the error was less than 0.001 T. The proposed method provides an effective theoretical guidance for measuring the magnetic field of the Wire Suspended Micro-Pendulum Accelerometer; correcting the scale factor and temperature influence coefficients; etc. |
| first_indexed | 2024-04-11T22:27:42Z |
| format | Article |
| id | doaj.art-a6d8e7604d974360bba2e211deab6d41 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T22:27:42Z |
| publishDate | 2015-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-a6d8e7604d974360bba2e211deab6d412022-12-22T03:59:37ZengMDPI AGSensors1424-82202015-04-011548527853910.3390/s150408527s150408527Measurement Method of Magnetic Field for the Wire Suspended Micro-Pendulum AccelerometerYongle Lu0Leilei Li1Ning Hu2Yingjun Pan3Chunhua Ren4Key Lab. of Opto-Electronic Technology & System, Ministry of Education, Chongqing University, Chongqing 400044, ChinaState Key Lab. of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, ChinaCollege of Aerospace Engineering, Chongqing University, Chongqing 400044, ChinaKey Lab. of Opto-Electronic Technology & System, Ministry of Education, Chongqing University, Chongqing 400044, ChinaKey Lab. of Opto-Electronic Technology & System, Ministry of Education, Chongqing University, Chongqing 400044, ChinaForce producer is one of the core components of a Wire Suspended Micro-Pendulum Accelerometer; and the stability of permanent magnet in the force producer determines the consistency of the acceleration sensor’s scale factor. For an assembled accelerometer; direct measurement of magnetic field strength is not a feasible option; as the magnetometer probe cannot be laid inside the micro-space of the sensor. This paper proposed an indirect measurement method of the remnant magnetization of Micro-Pendulum Accelerometer. The measurement is based on the working principle of the accelerometer; using the current output at several different scenarios to resolve the remnant magnetization of the permanent magnet. Iterative Least Squares algorithm was used for the adjustment of the data due to nonlinearity of this problem. The calculated remnant magnetization was 1.035 T. Compared to the true value; the error was less than 0.001 T. The proposed method provides an effective theoretical guidance for measuring the magnetic field of the Wire Suspended Micro-Pendulum Accelerometer; correcting the scale factor and temperature influence coefficients; etc.http://www.mdpi.com/1424-8220/15/4/8527Wire Suspended Micro-Pendulum Accelerometermagnetic field strengthpermanent magnetiterative least squares |
| spellingShingle | Yongle Lu Leilei Li Ning Hu Yingjun Pan Chunhua Ren Measurement Method of Magnetic Field for the Wire Suspended Micro-Pendulum Accelerometer Sensors Wire Suspended Micro-Pendulum Accelerometer magnetic field strength permanent magnet iterative least squares |
| title | Measurement Method of Magnetic Field for the Wire Suspended Micro-Pendulum Accelerometer |
| title_full | Measurement Method of Magnetic Field for the Wire Suspended Micro-Pendulum Accelerometer |
| title_fullStr | Measurement Method of Magnetic Field for the Wire Suspended Micro-Pendulum Accelerometer |
| title_full_unstemmed | Measurement Method of Magnetic Field for the Wire Suspended Micro-Pendulum Accelerometer |
| title_short | Measurement Method of Magnetic Field for the Wire Suspended Micro-Pendulum Accelerometer |
| title_sort | measurement method of magnetic field for the wire suspended micro pendulum accelerometer |
| topic | Wire Suspended Micro-Pendulum Accelerometer magnetic field strength permanent magnet iterative least squares |
| url | http://www.mdpi.com/1424-8220/15/4/8527 |
| work_keys_str_mv | AT yonglelu measurementmethodofmagneticfieldforthewiresuspendedmicropendulumaccelerometer AT leileili measurementmethodofmagneticfieldforthewiresuspendedmicropendulumaccelerometer AT ninghu measurementmethodofmagneticfieldforthewiresuspendedmicropendulumaccelerometer AT yingjunpan measurementmethodofmagneticfieldforthewiresuspendedmicropendulumaccelerometer AT chunhuaren measurementmethodofmagneticfieldforthewiresuspendedmicropendulumaccelerometer |