PDF(Pubmed)
Abstract：
The aim of this work is to create a new type of gravimeter that can function effectively in the challenging conditions of space, specifically on the surfaces of planets and moons. The proposed device, called a diamagnetically stabilized magnetically levitated gravimeter (DSMLG), uses magnetic forces to balance a test mass against the force of gravity, allowing for accurate measurements. A diamagnetically stabilized levitation structure comprises a floating magnet, diamagnetic material, and a lifting magnet. The floating magnet levitates between two diamagnetic plates without the need for external energy input due to the interaction between the magnetic forces of the floating magnet and the stabilizing force of the diamagnetic material. This structure allows for stable levitation of the floating magnet without requiring additional energy. The goal is to design a gravimeter that is lightweight, requires minimal power, can withstand extreme temperatures and shocks, and has a low data rate. The authors envision this gravimeter being used on various robotic spacecraft, such as landers and rovers, to study the interiors of rocky and icy celestial bodies. This paper reports on the results of a finite element model analysis of the DSMLG and the strength of the resulting diamagnetic spring. The findings contribute to the understanding of the levitation characteristics of diamagnetically stabilized structures and provide valuable insights for their practical applications, including in the development of the proposed DSMLG.
摘要：
这项工作的目的是创造一种新型的重力仪，可以在充满挑战的空间条件下有效地发挥作用，特别是在行星和卫星的表面。拟议的装置，称为抗磁稳定磁悬浮重力仪（DSMLG），使用磁力来平衡测试质量与重力的关系，允许准确的测量。抗磁稳定悬浮结构包括浮动磁体，抗磁性材料，和一个提升磁铁。由于浮动磁体的磁力与抗磁性材料的稳定力之间的相互作用,浮动磁体在两个抗磁板之间悬浮而不需要外部能量输入。该结构允许浮动磁体的稳定悬浮,而不需要额外的能量。我们的目标是设计一种轻巧的重力仪，需要最小的功率，可以承受极端温度和冲击，并且具有低数据速率。作者设想这种重力仪将用于各种机器人航天器，比如着陆器和流浪者，研究岩石和冰冷天体的内部。本文报告了DSMLG的有限元模型分析结果以及所得抗磁弹簧的强度。这些发现有助于理解抗磁稳定结构的悬浮特性，并为其实际应用提供有价值的见解，包括在拟议的DSMLG的开发中。
