一种空间无人平台的LPV鲁棒姿态控制方法  

A LPV Robust Attitude Control Method for Unmanned Space Platform

作　　者：蔡赫 冯笛恩 胡博 余威 饶永红[2] Cai He;Feng Di’en;Hu Bo;Yu Wei;Rao Yonghong(Aerospace Times Feihong Technology Company Limited,Beijing 100094,China;Equipment Support Group of the Armaments Department of PLA,Beijing 100072,China)

机构地区：[1]航天时代飞鸿技术有限公司,北京100094 [2]中国人民解放军陆军装备部装备保障大队,北京100072

出　　处：《动力学与控制学报》2024年第11期65-71,共7页Journal of Dynamics and Control

摘　　要：针对携带转动挠性太阳帆板的空间无人平台姿态控制问题,提出了一种基于输出反馈的线性变参数(LPV)鲁棒姿态控制方法.首先以太阳帆板转角作为调度参数,建立空间无人平台姿态动力学LPV模型.将二次型控制指标上限作为优化指标,考虑了实际工况中姿态控制信号输入受限、输入变化率受限以及挠性振动难以观测的情况,通过线性矩阵不等式(LMI)方法求解得到了随帆板转角调度的LPV输出反馈控制器.所求得的控制器无需挠性振动信息,以平台姿态角和姿态角速度作为反馈信号,能够在帆板转角大范围变化的情况下保持平台姿态的鲁棒稳定性,同时有效抑制帆板的挠性振动,具备较好的参数适应性和抗干扰能力.最后,用数值方法对所提出的空间无人平台LPV姿态控制方法进行了验证.A linear parameter-varying(LPV)robust attitude control method based on output feedback is proposed to solve the attitude control problem of space unmanned platform carrying rotating flexible solar panels.Firstly,the LPV model of attitude dynamics is established by taking solar panel angle as scheduling parameter.Taking the upper limit of the quadratic control index as the optimization index,the LPV output feedback controller is obtained by linear matrix inequality(LMI)method considering the limited input and change rate of the attitude control signal and the difficult observation of the flexible vibration in actual working conditions.Flexible vibration information is not needed by obtained controller.Platform attitude angles and attitude angular velocities are taken as feedback signals,which can maintain the robust stability of platform attitude and effectively suppress the flexible vibration of the windsurfing board under the condition that the windsurfing angle changes in a wide range,and has good parameter adaptability and anti-interference ability.Finally,the proposed LPV attitude control method for unmanned space platform is verified by numerical method.

关 键 词：空间无人平台 姿态控制 线性变参数 鲁棒控制 输入受限 

分 类 号：V412.4[航空宇航科学与技术—航空宇航推进理论与工程]