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《Journal of Naval University of Engineering》 2017-02
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A protection method of ship magnetic field information

TIAN Dong;ZHUANG Jin-wu;LIU Sheng-dao;ZHAO Wen-chun;LI Zhi-xin;College of Electrical Engineering,Naval Univ.of Engineering;  
To deal with the problem that ship magnetic field information is easily measured when they go through foreign ports and main channels,a ship magnetic field information protection method is proposed by adjusting degaussing coils currents to control the amplitude of magnetic field and the magnetic moments.Firstly,the amplitude of ship magnetic field and the magnetic moments are calculated when the degaussing system operates optimally(to minimize the amplitude of magnetic field)or is off.A mathematical model is built with the coils currents as the optimized parameters for the purpose of both controlling amplitude of magnetic field to a certain level and reducing the relativity of the magnetic moments.Then,the particle swarm optimization(PSO)is used to calculate the coils currents.Lastly,the effectiveness of the method is verified by a ship model example.The results show that the method can protect the ship magnetic field information amplitude,the magnetic moments and the passing curve features.
【Fund】: 海军工程大学自然科学基金资助项目(20150466)
【CateGory Index】: U674.703.3
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Chinese Journal Full-text Database 7 Hits
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