由磁矩计算磁场强度的公式在航天器磁矩测量中的应用

Application of the formula for magnetic field intensity based on magnetic moment in spacecraft magnetic moment measurement

基于由磁矩计算磁场强度的反立方公式及其一般工程应用,文章提出将反立方公式与球面作图法结合,形成新球面作图法;并重点给出该方法在航天器磁试验磁矩测量中的应用,即在数据采集时应用球面作图法思路,数据处理时应用反立方公式由磁场强度测量值求磁矩。应用该方法对卫星内部有3个点磁矩情况下的总磁矩进行了仿真计算,结果表明,在测量点数≥30时,相对误差≤4%。

By using the inverse cube formula for calculating the magnetic field strength based on the magnetic moment,a new spherical drawing method is proposed by combining the inverse cube formula with the spherical drawing method.The focus is on the application of this method in the measurement of the magnetic moment of spacecraft in the magnetic test,that is,using the spherical mapping method in the data collection,to calculate the magnetic moment of the satellite body with the inverse cubic formula from a number of measured values of the magnetic field strength along the sphere of the measurement.The total magnetic moment of the satellite from the magnetic moments at three known points is simulated by using this method for validation.It is shown that this method can achieve a relative error of not more than 4%when the number of measurement points is more than or equal to thirty.