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摘要:
在轨服务是未来卫星主要发展趋势之一，在轨软件重构和硬件重构技术是其主要核心技术。基于此，首先创新移植电磁原理和"笔帽式"锁紧原理，提出了一种适用于立方体纳卫星的1U微型电磁对接硬件重构设计方案。然后，基于所设计的电磁对接机构，通过电磁力和力矩精确模型和远场模型的比较分析，明确了远场模型适用范围为对接距离大于0.1 m。最后，利用数值仿真方法，分析得到单个线圈和含铁芯的通电螺线管比值约在10-8~10-4量级，为远场模型的修正提供参考。
Abstract:On-orbit service is one of the main developing trends of future satellites, where on-orbit software reconfiguration and hardware assembly are the key technologies. In this paper, combined with the electromagnetic technology and "pen cap" docking mechanism, an autonomous rendezvous and docking control mechanism with 1U dimension was designed to be used in the cubesat field. And based on the designed electromagnetic docking mechanism, the comparison between precise model and distant field model of electromagnetic force and moment was conducted, and the application range for distant field model with docking distance more than 0.1 m was gained. Using simulation analysis method, it is found that the ratio of without iron core and with iron core is in the range of 10-8~10-4, which provides reference for distant field model correction.
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Key words:
- nanosatellite /
- on-orbit reconfiguration /
- electromagnetic docking /
- solenoid coil /
- nonlinear
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图 1 螺线管电磁铁设计参数获取过程
Figure 1. Gaining process of solenoid electromagnet design parameters
图 8 通电螺线管与单个线圈轴线上磁场比值
Figure 8. Magnetic field ratio between electrified solenoid and single coil axis
图 9 电磁对接机构空间位置示意图
Figure 9. Schematic diagram of spatial position for electromagnetic docking mechanism
图 10 电磁力强度误差与距离及角度的关系
Figure 10. Change of strength error of electromagnetic force with distance and angle
图 11 电磁力角度误差与距离及角度的关系
Figure 11. Change of angle error of electromagnetic force with distance and angle
图 12 电磁力矩强度误差与距离及角度的关系
Figure 12. Change of strength error of electromagnetic moment with distance and angle
图 13 电磁力矩角度误差与距离及角度的关系
Figure 13. Change of angle error of electromagnetic moment with distance and angle
图 15 单一螺线管和含铁芯螺线管轴线上磁感应强度分布
Figure 15. Magnetic induction intensity distribution in axial direction for electrified solenoid with single solenoid and iron core
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