Next Article in Journal
A Label-Free Immunosensor for Ultrasensitive Detection of Ketamine Based on Quartz Crystal Microbalance
Previous Article in Journal
Development and Beam-Shape Analysis of an Integrated Fiber-Optic Confocal Probe for High-Precision Central Thickness Measurement of Small-Radius Lenses
Article Menu

Export Article

Open AccessArticle
Sensors 2015, 15(4), 8527-8539; doi:10.3390/s150408527

Measurement Method of Magnetic Field for the Wire Suspended Micro-Pendulum Accelerometer

1
Key Lab. of Opto-Electronic Technology & System, Ministry of Education, Chongqing University, Chongqing 400044, China
2
State Key Lab. of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China
3
College of Aerospace Engineering, Chongqing University, Chongqing 400044, China
*
Author to whom correspondence should be addressed.
Academic Editor: Vittorio M.N. Passaro
Received: 4 February 2015 / Revised: 19 March 2015 / Accepted: 7 April 2015 / Published: 13 April 2015
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [1968 KB, uploaded 13 April 2015]   |  

Abstract

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. View Full-Text
Keywords: Wire Suspended Micro-Pendulum Accelerometer; magnetic field strength; permanent magnet; iterative least squares Wire Suspended Micro-Pendulum Accelerometer; magnetic field strength; permanent magnet; iterative least squares
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Lu, Y.; Li, L.; Hu, N.; Pan, Y.; Ren, C. Measurement Method of Magnetic Field for the Wire Suspended Micro-Pendulum Accelerometer. Sensors 2015, 15, 8527-8539.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top