基于等效电路的舰船轴频电流建模与实验分析

Modeling and Experimental Analysis of Ship Shaft Frequency Current Based on Equivalent Circuit

摘要:

针对舰船轴频电场信号源的发生机理和应用研究的问题，以实验室轴电流模拟装置为平台， 建立了一种基于等效电路的舰船轴频电流的模型，研究了轴电流模拟装置的大轴振动情况，对大轴电流进行了建模仿真，得到了不同转速下大轴轴电流波形图及其频谱，使用轴电流模拟装置进行了轴电流实验。 通过仿真结果与轴电流实验数据对比，计算得到该建模方法轴电流平均误差在 8% 以内，验证了该建模方法在理论上的可行性。

关键词:舰船;轴频电流;等效电路;建模仿真

Abstract:

Aiming at the problem of occurrence mechanism and application research of ship shaft frequency electric field signal source， a model of ship shaft frequency current based on equivalent circuit is established，using the laboratory axial current simulation device as the platform． The large shaft vibration of shaft current simulator is studied． Modeling and simulation of large shaft current is carried out． The large shaft current waveform diagram and its frequency spectrum at different rotational speeds are obtained． The shaft current experiment is carried out using the shaft current simulator． Comparing the simulation results with the experimental data of shaft current， the average error of the modeling method is within 8%． The feasibility of the modeling method verified to be feasible theoretically．

Key words:warship; shaft frequency current; equivalent circuit; modeling and simulation