旋转目标的多星协同近距离姿轨耦合控制  被引量:2

ATTITUDE-ORBIT COUPLING METHOD FOR MULTISATELLITE COLLABORATIVE PROXIMITY CONTROL OF ROTATING TARGET

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作  者:徐影 张进[1] Xu Ying;Zhang Jin(College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410073,China)

机构地区:[1]国防科技大学空天科学学院,长沙410073

出  处:《动力学与控制学报》2021年第2期22-31,共10页Journal of Dynamics and Control

基  金:国家自然科学基金资助项目(11572345)。

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.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 sat⁃ellites,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 fly⁃ing-around and approaching adsorption in any direction of space.The expected attitude of an obseravtion satellite is de⁃signed 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 con⁃trolled 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 satel⁃lites can safely approach and adsorb to the pre-set position of the target surface at the same time.The actual attitude of ob⁃servation 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.

关 键 词:多星协同 近距离操作 快速绕飞 逼近 碰撞规避 姿轨耦合控制 

分 类 号:V448.2[航空宇航科学与技术—飞行器设计]

 

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