旋转目标的多星协同近距离姿轨耦合控制
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国防科技大学 空天科学学院,长沙 410073

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E-mail: zhangjin@nudt.edu.cn

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基金项目:

国家自然科学基金资助项目(11572345)


ATTITUDE-ORBIT COUPLING METHOD FOR MULTI-SATELLITE COLLABORATIVE PROXIMITY CONTROL OF ROTATING TARGET
Author:
Affiliation:

College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410073,China

Fund Project:

The project supported by the National Natural Science Foundation of China(11572345)

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    摘要:

    针对多星快速绕飞与同步逼近吸附旋转目标的近距离协同操作任务,首先,考虑旋转目标、观测星和逼近星的大小及形状,基于相对轨道和相对姿态动力学模型,分析设计了适用于空间任意方位的期望绕飞平面和期望姿态指向:观测星期望姿态保持观测设备始终指向旋转目标,逼近星期望姿态保持与目标星姿态同步;然后,考虑碰撞规避,推导了基于误差四元数和误差角速度反馈的比例-微分控制律以及一种基于人工势场法的近距离安全制导控制方法,通过二者相结合对相对姿态及相对轨道进行控制;最后,通过3星观测、2星逼近的近距离操作问题对提出的方法进行测试.仿真结果表明,3颗观测星均能够成功躲避其它卫星碰撞,并沿着期望的轨道运行,2颗逼近星能够同时安全逼近,并吸附到目标表面设定位置,观测星和逼近星实际姿态均能快速收敛到期望值,验证了提出控制方法的有效性.

    Abstract:

    The proximity operation mission of multi-satellite flying around and approaching to adsorb a rotating target is established. Considering the sizes and shapes of the rotating target, the flying-around observation, and approaching satellites, also based on the relative orbit and relative attitude dynamics model of satellites, the expected trajectories and attitudes of each observation satellite and approaching satellite are analyzed and designed,which are suitable for fast flying-around and approaching adsorption in any direction of space. The expected attitude of an obseravtion satellite is designed so that its observation device always points to the target, and the expected attitude of the approaching satellite is designed to be the same with the state of the absorbing point. Considering collision avoidance, a proportional-differential control law is proposed based on error quaternion and error angular velocity feedback, and a proximity safety guidance control method based on artificial potential field method is also derived. The relative attitude and relative orbit are controlled by combination of the above two control methods. The proposed method is tested by the proximity operation problem of 3-satellite observation and 2-satellite approaching. The simulation results show that all the three observation satellites can successfully avoid the collision with other satellites and operate along the desired orbit, and the two approaching satellites can safely approach and adsorb to the pre-set position of the target surface at the same time. The actual attitude of observation satellite and approaching satellite can converge quickly to the expected value and keep the observation equipment pointing to the rotating target all the time, which confirms the effectiveness of the proposed control method.

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徐影,张进.旋转目标的多星协同近距离姿轨耦合控制[J].动力学与控制学报,2021,19(2):22~31; Xu Ying, Zhang Jin. ATTITUDE-ORBIT COUPLING METHOD FOR MULTI-SATELLITE COLLABORATIVE PROXIMITY CONTROL OF ROTATING TARGET[J]. Journal of Dynamics and Control,2021,19(2):22-31.

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历史
  • 收稿日期:2019-11-07
  • 最后修改日期:2020-06-30
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  • 在线发布日期: 2021-04-28
  • 出版日期: 2021-04-20

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