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文章提出了一种新的航天器磁矩测量方法——动态环路法。首先,利用高斯电势级数公式建立了航天器的磁性偶极-四极模型。然后,针对模型中的8个磁矩分量,基于动态环路法的基本测量原理,设计了5组磁通感应线圈;根据8个磁矩分量的磁感应强度分布以及5组线圈的具体形状和位置,给出了各磁矩分量的磁通量表达式和利用积分法计算各个磁矩分量的公式。最后,对在推导过程中由于简化带来的近似误差和利用积分法计算公式理论计算误差进行了初步分析。当线圈间隔L为半径r的5%时,近似误差和积分法理论计算误差分别不超过2%和0.17%。结果表明,该方法不但能够获得航天器的磁矩大小并计算出其磁心坐标,而且还具有测量过程简单、测量速度较快以及测量精度高的优点。
The paper presents a new method of magnetic moment measurement of spacecraft - dynamic loop method. First, the magnetic dipole-quadrupole model of the spacecraft is established using the Gaussian potential series formula. Then, based on the basic measuring principle of dynamic loop method, five flux induction coils are designed for the eight magnetic moment components in the model. According to the distribution of magnetic flux density of the eight magnetic moment components and the specific shapes and positions of the five coils, , The expressions of the magnetic fluxes of each magnetic moment component and the formula for calculating each magnetic moment component by the integral method are given. Finally, a preliminary analysis is made of the approximate error caused by simplification and the calculation error of the formula using integral method in the derivation process. When the coil spacing L is 5% of the radius r, the theoretical error of the approximation error and integral method do not exceed 2% and 0.17% respectively. The results show that this method not only can obtain the magnetic moment of the spacecraft and calculate its magnetic core coordinates, but also has the advantages of simple measuring process, fast measuring speed and high measuring accuracy.