中国科技核心期刊

中文核心期刊

CSCD来源期刊

空间控制技术与应用 ›› 2013, Vol. 39 ›› Issue (2): 10-16.doi: 10.3969/j.issn.1674-1579.2013.02.003

• 学术研究 • 上一篇    下一篇

基于Tersoff-Brenner势的航天器群图形编队研究

  

  1. 1.西北工业大学航天学院,西安710072; 2.航天飞行动力学技术重点实验室,西安710072
  • 出版日期:2013-04-24 发布日期:2013-04-26
  • 作者简介:曾志峰(1983—),男,博士研究生,研究方向为太阳帆航天器动力学与控制、航天器群体控制研究;汤一华(1978—),男,博士后,研究方向为飞行器动力学与控制;陈士橹(1920—),男,中国工程院院士,研究方向为飞行器动力学与控制;徐敏(1956—),女,教授,研究方向为飞行器动力学与控制和流固耦合研究.
  • 基金资助:

    航天飞行动力学技术重点实验室开放基金资助项目(2012afd1023).

On Pattern Formation of Swarming Spacecrafts based on Tersoff-Brenner Potential Field

  1. (1.School of Astronautics, Northwestern Polytechnical University, Xi’an 710072, China;
     2.Science and Technology on Aerospace Flight Dynamics Laboratory, Xi’an 710072, China)
  • Online:2013-04-24 Published:2013-04-26

摘要: 从分子动力学模拟角度提出了一种分布式航天器群导航控制方法,可使行星中心开普勒轨道上的航天器群在有限的感知信息条件下自发实现图形编队.该法基于人工势场技术,主要分为两个部分:改造自C-W方程的外围全局汇聚势场和基于Tersoff-Brenner势的局部塑形势场.前者将各航天器导引至预设汇聚点附近,后者进一步使各航天器自我调整彼此相对位置,最终编成期望构型.此外,引入一速度依赖型耗散项以确保任意初始分布条件下图形编队均收敛.通过地球同步轨道上航天器群正四面体构型(含中心,即金刚石结构单元)编队仿真,验证了所提方法的有效性和优越性.将编队脚本简单修改,该法还可方便用于其它类碳元素同素异形体构型的塑造,如石墨晶体结构单元正六边形等.

关键词: 群控制, 编队, TersoffBrenner, 人工势场, 正四面体晶格, 自组织

Abstract: From the perspective of molecular dynamics simulation, we present a distributed control strategy that lets a swarm of spacecraft autonomously form a lattice in orbits around a planet, just making use of limited local sensory information. The strategy is based on the artificial potential field approach, which divides the artificial field into two parts: a global artificial potential field mainly based on the famous C-W equations that gathers the spacecraft around a predefined meeting point, and a local term exploiting the well-known Tersoff-Brenner potential that allows a spacecraft to place itself in the correct position relative to its closest neighbors. Moreover, in order to ensure convergence for all initial distributions of the spacecrafts, a dissipation term depending on the velocity of the agent is introduced. The new methodology is demonstrated in the problem of forming a regular tetrahedron lattice (include the center), i.e., the structure unit of diamond. By slightly changing the scenario, our method can be easily applied to shape other configurations similar to the structures of allotropes of carbon, e.g., a regular hexagon(i.e., the structure unit of graphite) etc.

Key words: swarm control, formation, TersoffBrenner, artificial potential field, regular tetrahedron lattice, selforganizing

中图分类号: 

  • V529.1