中文摘要：

为研究船舶磁性螺旋桨旋转产生的感应电场，将其等效为磁偶极子，采用法拉第电磁感应定律，利用环路积分推导出了匀速旋转磁偶极子感应电场的数学模型，仿真分析了旋转磁体感应电场的特性，通过实验证明了计算方法的正确性。实验结果表明：旋转磁体感应电场强度与磁体旋转速度、磁矩的大小呈正比；该电场的频率等于磁体旋转频率，三轴分量相位差分别为π／2rad和π rad，均与理论分析一致；船舶磁性螺旋桨旋转产生的感应电场是船舶轴频电场的组成部分。完善了轴频电场的产生机理，为船舶轴频电场的检测和控制提供了理论参考。

英文摘要：

In order to study the electric field induced by rotating magnetic propeller, a mathematical model is proposed to calculate the electromagnetic signals induced by a rotating magnetic dipole based on the Faraday＇ s law of electromagnetic induction. An experiment is done in the laboratory pool to test the analytical method. The results show that the signal＇ s order of magnitude is proportional to the rotational frequency and magnetic moment, its frequency is consistent with the rotational frequency, and the phase differences of three axis are π/2 and π, respectively. The research proves that the electric field is a part of shaft-rate electric field of ship, which complements the mechanism of production of the shaft-rate elec- tric field, and provides a theoretical basis for the detection or control of ship＇ s shaft-rate electric field.