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论文:2015,Vol:33,Issue(6):887-891 |
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引用本文： |
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朱战霞, 马家瑨, 樊瑞山. 航天器相对运动姿轨耦合特性研究[J]. 西北工业大学学报 |
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Zhu Zhanxia, Ma Jiajin, Fan Ruishan. Coupling Analysis on Relative Motion of Spacecraft Attitude and Orbit Model Based on Dual Quaternion[J]. Northwestern polytechnical university |
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| 航天器相对运动姿轨耦合特性研究 |
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| 朱战霞1,2, 马家瑨1,2, 樊瑞山1,2 |
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1. 西北工业大学 航天学院, 陕西 西安 710072;
2. 航天飞行动力学技术国家级重点实验室, 陕西 西安 710072 |
| 摘要: |
| 近距离复杂操作过程中航天器相对运动姿轨之间存在耦合,准确分析耦合特性是精准控制系统设计的前提。利用基于对偶四元数得到的航天器相对运动一体化模型,采用参数分析法研究了姿轨耦合特性。首先分析了模型中的耦合项,明确了耦合产生的物理成因,确定了关键耦合参数;之后逐次改变各个参数,联合一体化动力学模型进行求解,获得耦合对航天器相对运动的定量影响。结果表明,推力偏心所产生的附加力矩和重力梯度力矩是产生相对姿轨耦合的主要成因,绝对姿态运动比相对姿态运动对相对轨道的影响更加明显,形成的姿轨耦合特性更为复杂。研究结果可为相对姿轨协同控制系统设计提供参考。 |
| 关键词:
相对运动
姿轨耦合
对偶四元数
参数分析法
耦合性分析
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| Coupling Analysis on Relative Motion of Spacecraft Attitude and Orbit Model Based on Dual Quaternion |
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| Zhu Zhanxia1,2, Ma Jiajin1,2, Fan Ruishan1,2 |
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1. College of Astronautics, Northwestern Polytechnical University, Xi'an 710072, China;
2. National Key Laboratory of Aerospace Flight Dynamics, Xi'an 710072, China |
| Abstract: |
| Coupling effect between the spacecraft attitude and orbit influences relative motion of the spacecraft a lot, also influences control. Thus the couple characteristics should be studied before controller design. In this paper, we used relative motion model which is built based on dual quaternion, to analysis coupling effect. We proposed a new method-parameters analysis method, that is, the parameters in the coupling term were changed successively, solved the above dynamics equation, get the curves and the laws of the relative motion parameters generated by coupling terms. Based above, we designed control law to prove the coupling impact on control effect. Simulations have been done with the coupling model and the classic model of the relative motion respectively. The results show that coupling effect seriously affects the attitude and orbit of relative motion, especially the attitude influences the orbit motion a lot. In order to make the orbit and attitude control simultaneously, we must consider the coupling effect and coordinated characteristic during the controller design. |
| Key words:
acceleration
angular velocity
attitude control
computer simulation
control
controllers
design
dynamics
mathematical models
matrix algebra
orbits
parameterization
spacecraft
velocity
attitude and orbit coupling
coupling analysis
dual quaternion
parameter analysis
relative motion
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| 收稿日期: 2015-04-24
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金(11472213)资助 |
| 通讯作者:
Email： |
| 作者简介: 朱战霞(1973—),女,西北工业大学教授、博士,主要从事飞行动力学与控制研究。
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