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Roll Angle Measurement of High-spinning Projectile Based on Magnetic Sensors Unit


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Roll Angle Measurement of High-spinning Projectile Based on Magnetic Sensors Unit
LI Ding1ZHAO Cheng-gang2BU Xiong-zhu1
1.School of Mechanical Engineering,NUST,Nanjing 210094,China;2.Mechanical Engineering Department,Anyang Institute of Technology,Anyang 455000,China
sensors magnetic materials projectiles magnetic sensors unit high-spinning projectiles roll angles spin rates
In allusion to the problem that the harmful acceleration consisting of a three-axis magnetic sensor and accelerometers on projectile to measure attitude angles is difficult to remove or compensate,a new scheme comprising magnetic sensors installed in a particular way is designed.Two novel calculation methods called zero crossing method and the ratio of extremum method are adopted based on the configuration of sensors,make the scheme be applicable for the carrier which has linear acceleration.The mathematical expressions of the magnetic field along the sensitive axis of sensors are deduced,the two novel methods are demonstrated and a numerical simulation is worked out.The comparison of the two methods and the error analysis are given based on the simulation.The result indicates that the roll angle and the axial angular rate can be solved by the two methods.Compared with the zero crossing method,the ratio of extremum method is better,because more information and single value of attitude angles can be obtained,the calculated attitude angles are more accurate,and the errors of the angles are decayed faster.


[ 1] 周百令, 黄胜华, 王寿荣, 等. 一种新型的单陀螺多加速度计捷联惯导系统[ J]. 中国惯性技术学报, 2002, 10( 1) : 6- 9.
[ 2] 晏登洋, 任建新, 宋永军. 惯性/地磁组合导航技术研究[ J]. 机械与电子, 2007( 1): 19- 22.
[ 3] 杜振宇, 石庚辰. 弹体飞行姿态测量方法探讨[ J]. 探测与控制学报, 2002, 24( 1): 53- 56.
[ 4] 孙磊. 火箭弹引信二维弹道修正原理与关键技术研究[ D] . 南京: 南京理工大学机械工程学院, 2005. 62- 73.
[ 5] 饶高敏. 磁探测在弹道修正弹中的应用[ D] . 南京: 南京理工大学机械工程学院, 2007. 7- 21.
[ 6] H epner D, H ark ins T. De term ining inertial or ientation o f a spinn ing body w ith body-fixed sensors[ R]. ARLTR- 2313, 2001. 7- 11.
[ 7] Thompson A A. A procedure fo r ca librating m agne tic sensors[ R]. ARL-MR-524, 2002. 1- 2.
[ 8] H arkins T J, H epner D J. M agsonde ( paten t pending) : A dev ice for m aking angu la r m easu rem ents on spinn ing pro jectiles using m agne tic sensors[ A ]. Proceed ings of SPIE in Acquisition, Track ing, and Po in-t ing XIV [ C] . O rlando, FL, USA: SPIE Dig ital L-i brary, 2000. 60- 67.


Last Update: 2012-11-19