摘要
轴频电场是由于螺旋桨转动时因主轴和轴承之间的接触阻抗不恒定而导致流经主轴的腐蚀或防腐电流受到周期性调制而产生,是海船的一个重要目标特征信号.文中利用时谐电流元,从理论上推导了海船轴频电场的数学建模方法,采用该方法只需有限的测量数据即可建立海船轴频电场的数学模型,拟合海船产生的轴频电场分布.
Shaft-rate electric field is produced by shaft current surges caused by impedance changes between shaft and hull,modulated by shaft rotation.Shaft-rate electric field is one of the important target characteristic signatures of sea going vessels.The modelling algorithm of shaft-rate electric field is developed by using time-harmonic electric current elements in this paper.By employing this time-harmonic electric current elements model,the shaft-rate signature of a sea going vessel can be modelled.
出处
《武汉理工大学学报（交通科学与工程版）》
2012年第1期168-170,共3页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
中国博士后科学基金项目资助(批准号:20070410048)
关键词
海船
轴频电场
建模
时谐电流元
sea going vessel
shaft-rate electric field
modeling
time-harmonic electric current element
