Affiliations: [a] School of Computer and Information Engineering, Yibin
University, Yibin, Sichuan, China | [b] Graduate School of Southwest Petroleum University,
Xindu, Sichuan, China | [c] Shenzhen Institute of Advanced Integration Technology,
Chinese Academy of Sciences/The Chinese University of Hong Kong, Shenzhen
Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen,
Guangdong, China
Abstract: magnetic flux intensity of the rectangular magnet is the function of
its location and orientation. With the measured magnetic flux intensities at
two points around the rectangular magnet by 3-axis magnetic sensors, a
non-linear equation group is established, and the location and orientation of
the rectangular magnet can be determined by seeking the solution of the
equation group by using general Levenberg-Marquardt (L-M) algorithm. However,
the time occupied by general L-M algorithm is too long to realize real-time
tracking for the rectangular magnet. We propose an improved method which
computes Jacobin Matrix in L-M algorithm in parallel. Making use of the Open
Multi-Processing (OpenMP) model, the parallel operation is implemented on the
dual-core personal computer. As a result, the real-time tracking for the
rectangular magnet is realized, and the tracking curve is smooth.
