用于低磁钢舰艇闭环消磁的船外磁场推算研究  

Research on Extrapolation of Magnetic Field outside the Low Magnetic Steel Ship for Closed-loop Degaussing System

作　　者：赵文春[1] 刘胜道[1] 肖昌汉[1] 周国华[1] 王昭[1] 

机构地区：[1]海军工程大学电气与信息工程学院,武汉430033

出　　处：《船电技术》2011年第11期6-8,共3页Marine Electric & Electronic Engineering

基　　金：总装预研项目(51310040501)

摘　　要：利用实时测量的舰艇内部磁场值推算出外部目标磁场值,然后用外部目标磁场值来决策消磁绕组电流就是所谓的闭环消磁。本文推导了用于低磁钢舰艇闭环消磁的船外磁场推算的表达式,利用具有解析解的均匀磁化实心铁质球体的感应磁场进行了仿真实验。实验结果表明推算数据与理论值几乎完全吻合。在仿真数据中加入高斯白噪声后,推算数据与理论值依然吻合的相当好,表明该推算方法精度高且具有很强的鲁棒性。Closed-loop degaussing （CLDG） technology is a degaussing method of using the real-time magnetic field measured inside the ship to calculate the target magnetic field outside the ship and to determine the compensatory current of degaussing coils. An expression is derived for closed-loop degaussing system of the low magnetic steel ship to extrapolate the magnetic field outside the ship. The induced magnetic field of a homogeneous magnetized solid steel sphere that has analytic expression is used for simulation. The simulation result shows that the extrapolated values are identical to the theoretical values. Then adding the Gauss white noise to the simulated data, the extrapolated values still agree with the theoretical values very well. It shows that the extrapolation method is high accurate and strong robust.

关 键 词：磁场推算 闭环消磁 舰艇磁场 

分 类 号：TM153.1[电气工程—电工理论与新技术]