三磁偶极子磁体舰船磁场仿真

Simulation of Warship Magnetic Field Based on Three Magnetic Dipole Magnetic Bodies

针对磁偶极子阵列对舰船磁场建模需要磁偶极子数量较多,排列复杂,在工程较难实现的问题,首次提出用三个磁偶极子对舰船磁场进行建模。建模过程首先选定磁偶极子位置,然后用最小二乘法计算磁矩,计算并仿真舰船磁场,最后分析仿真磁场与水雷动作参数之间关系,结果表明用三个磁偶极子建模得到的磁场在幅度上有一定的精度,而且磁场梯度较高,可以在低航速下模拟相对高速的舰船磁场通过特性。由于磁偶极子数较少,排列规则,在工程上有广阔的应用前景。

Simulation of a warship magnetic field using magnetic dipoles array method needs large quantities of magnetic dipoles and complex arrangement, so it is difficult to carry out in project, herein the warship magnetic field simulation using three magnetic dipoles is proposed in the paper . Firstly, the position of three magnetic dipoles is given, and then the magnetic moment is calculated using least square, the magnetic field is calculated and simulated. Finally the relationship between simulated magnetic field and the mine ＇ s action parameter is analyzed. The results show that the models have acceptable precision and high magnetic field gradient, can simulate the passing characteristic of high speed warship using low speed. Because the method uses a few magnetic dipoles and regular array, it has widespread application in projects.