潜艇闭环消磁系统的关键在于外部磁场的推算精度，其决定了潜艇感应磁场和部分固定磁场的补偿效果。针对目前存在算法精度不高的问题，提出一种改进的内外映射法，不需要考虑潜艇内部磁传感器的安装姿态，且只需同时测量4组潜艇的内部磁场和外部磁场，就能得到两者的映射关系矩阵K，利用其来推算得到在不同地磁场作用下潜艇的外部感应磁场。开展了潜艇模型验证实验，将推算结果与测量结果进行比较，相对均方根误差最大仅为4.20%，满足了推算精度要求，证明了该方法的可行性。
The key of submarine’s closed-loop degaussing system is external magnetic field extrapolation, whose precision decides the compensation effect of submarine’s induced magnetic field and parts of permanent magnetic field. For solving the present problem of low precision in extrapolation, an improved internal and external reflection method was put forward. Without considering the installation posture of internal magnetic sensors in submarine model, the related matrix between internal and external magnetic field was solved by measuring only four different groups of magnetic field. Through the related matrix, the external induced magnetic fields were extrapolated under different geomagnetic effect. In a verification experiment, the extrapolated results were compared to the measured results.The biggest relative root mean square error is 4.20%, which shows the feasibility of this improved algorithm.
2020,42(6): 172-175 收稿日期：2018-10-11
DOI：10.3404/j.issn.1672-7649.2020.06.035
分类号：TM153.1
基金项目：国家自然科学基金资助项目(51377165)
作者简介：何保委(1995-),男,硕士研究生,主要研究方向为电磁环境与防护
参考文献：
[1] 刘大明, 刘胜道, 肖昌汉, 等. 舰艇闭环消磁技术国内外研究现状[J]. 船电技术, 2011, 31(10):6-9 LIU Daming, LIU Shengdao, XIAO Changhan, et al. Anlysis on ship's closed-loop degaussing technology in China and Abroad[J]. Marine Electric, 2011, 31(10):6-9
[2] XU X.B., ZENG L Degaussing of cylinders magnetized in earth's magnetic field-a two-dimentional model of degaussing of submarine[J]. Journal of Electromagnetic Waves and Applications, 1998, 12(8):1039-1051
[3] VARMA R. A. R. Design of degaussing system and demonstration of signature reduction on ship model through laboratory experiments[J]. Physics Procedia, 2014, 54:174-179
[4] ZHANG Yang, KANG Chong. The study of degaussing technology for underwater vehicle[C]//Proceedings of 2013 International Conference on Applied Mechanics, Materials, and Manufacturing. USA:Information Engineering ResearchInstitute, 2013:465-468.
[5] GUO Yuhao, WANG Chune, SUN Xiaoguang, et al. Design of degaussing system for magnetic shield in nuclear magnetic resonance gyroscope[C]//Proceedings of 2016 China International Conference on Inertial Technology and Navigation. China, 中国惯性技术学会, 2016:231-241.
[6] VUILLERUNET Y. Closed loop degaussing applied to double hull submarine magnetization identification from near magnetic fields measurements[D]. Grenoble, 2008:25-30.
[7] CARL S. Closed-loop multi-sensor control system and method[P]. US Patent:5189590, 1993-02-23.
[8] RICHARD M, ROVERT A. Ship degaussing system and algorithm[P]. US Patent:6965505 B1, 2005-11-15.
[9] 王鲸, 刘胜道, 苏广东. 一种潜艇内外磁场换算算法的验证实验[J]. 海军工程大学学报, 2010, 22(1):83-86 WANG Jing, LIU Sheng-dao, SU Guang-dong. An experi-mental verification of conversation of magnetic field inside and outside submarine[J]. Journal of Naval University of Engineering, 2010, 22(1):83-86
[10] 刘胜道, 肖昌汉, 周国华, 等. 潜艇闭环消磁中外部空间的磁场推算[J]. 海军工程大学学报, 2012, 24(1):31-34 LIU Shengdao, XIAO Changhan, ZHOU Guohua, et al. Extrapolation of magnetic field outside submarine in closed-loop degaussing system[J]. Journal of Naval University ofEngineering, 2012, 24(1):31-34
[11] 连丽婷, 杨明明. 基于径向基神经网络的舰艇磁场推算模型[J]. 舰船电子工程, 2013, 33(5):161-171 LIAN Liting, YANG Mingming. Model of Ship's Magnetic Field Extrapolation Based on Radical Basis Function Neutral Network[J]. Ship Electronic Engineering, 2013, 33(5):161-171
[12] 连丽婷, 肖昌汉, 刘胜道, 等. 基于微粒群算法薄钢板磁场推算中的位置优化[J]. 上海交通大学学报, 2010, 44(7):975-979 LIAN Liting, XIAO Changhan, LIU Sheng-dao, et al. The Measuremrnt positions optimization in the extrapolation of steel's magnetic field based on particle swarm optimizationalgorithm[J]. Journal of Shanghai Jiaotong University, 2010, 44(7):975-979
[13] 朱兴乐. 舰艇磁防护中三分量磁场测量关键技术研究[D]. 武汉:海军工程大学, 2014. ZHU Xingle. Study on key Techniques of three-component magnetic field's measurement in ship's magnetic defense[D]. Wuhan:Naval University of Engineering, 2014.
[14] 衣军, 张朝阳, 虞伟乔. 基于地磁模拟的潜艇感应磁场测[J]. 上海海事大学学报, 2015, 36(1):61-64 YI Jun, ZHANG Chaoyang, YU Weiqiao. Measurement of submarines' induced magnetic field based on geomagnetic simulation[J]. Journal of Shanghai Marine University, 2015, 36(1):61-64
[15] ZHANG Zhaoyang, YI Jun. Measuring the submarine's induced magnetic field by geomagnetic simulation method[J]. Advanced Materials Research, 2014, 3265(981):579-584
