宇航学报 ›› 2017, Vol. 38 ›› Issue (7): 766-771.doi: 10.3873/j.issn.1000-1328.2017.07.013

• 环境试验与器件 • 上一篇    下一篇

立方星带芯磁力矩器多目标优化设计与实现

白博,周军,王圣允   

  1. 西北工业大学精确制导与控制研究所,西安 710072
  • 收稿日期:2017-04-13 修回日期:2017-05-04 出版日期:2017-07-15 发布日期:2017-07-25
  • 基金资助:

    航天支撑技术基金(2015HTXGD);西北工业大学基础研究基金(JC201205)

Multi Objective Optimization Design and Implementation of a Magnetorquer with Magnetic Core for Cubesat

BAI Bo, ZHOU Jun, WANG Sheng yun   

  1. Institute of Precision Guidance and Control, Northwestern Polytechnical University, Xi’an 710072, China
  • Received:2017-04-13 Revised:2017-05-04 Online:2017-07-15 Published:2017-07-25

摘要:

针对立方星体积与功耗存在限制的情况下,如何得到磁矩大而体积小、重量轻、功耗低的带芯磁力矩器这一问题,采用多目标优化的方法进行磁力矩器的设计。首先,按照圆柱型磁芯上缠绕多层漆包线的结构,分别推导了磁矩、功耗与磁芯尺寸、漆包线直径以及绕线匝数之间的数学模型。其次,根据磁矩与功耗的数学模型,在质量与体积均存在约束的情况下,采用遗传算法对磁力矩器进行多目标优化设计。再次,根据带芯磁力矩器的磁感应强度与磁矩之间的关系,设计了磁矩的测试方法。最终,将所设计的参数进行了具体实现。对磁力矩器的测试结果可以看出,所设计的磁力矩器不仅输出磁矩线性度高、剩磁小,而且满足立方星标准的要求。所设计的磁力矩器在多颗立方星上的成功应用表明了该设计方案的有效性。

关键词: 立方星, 磁力矩器, 多目标优化

Abstract:

To solve the problem that how to design a large-magnetic moment, small-size, light-weight, low-power consumption magnetorquer with magnetic core under the constraint of the limited volume and power in a cubesat, a multi-objective optimization design method is used. Firstly, based on the structure of the cylindrical magnetic core with multiple layers of the enamel wires, the magnetic moment model and power consumption model are deduced from the magnetic core size, enamel wire diameter and turn number, respectively. Secondly, according to the model of the magnetic moment and power consumption, the multi-objective optimization design of the magnetorquer with genetic algorithm (GA) is used under the constraint of the limited mass and volume. Thirdly, based on the relation between the magnetic moment and the magnetic induction intensity, the measurement method of the magnetic moment is designed. Finally, the designed parameters are implemented. The test results show that the designed magnetorquer has the features of high linearity and low remanence, and it will satisfy the requirements of the CubeSat standards. The successful application of the designed magnetorquer in several CubeSats indicates the effectiveness of this design scheme.

Key words: Cubesat, Magnetorquer, Multi objective optimization

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