基于重复自抗扰控制的索网天线振动抑制  

Vibration suppression of cable net antenna based on repetitive active disturbance rejection control

作　　者：董雨桐 王文豪 马小飞[3] 刘磊[1,2] DONG Yutong;WANG Wenhao;MA Xiaofei;LIU Lei(School of Astronautics,Northwestern Polytechnical University,Xi'an 710072,China;Shaanxi Aerospace Flight Vehicle Design Key Laboratory,Xi'an 710072,China;Xi'an Institute of Space Radio Technology,Xi'an 710000,China)

机构地区：[1]西北工业大学航天学院,西安710072 [2]陕西省空天飞行器设计实验室,西安710072 [3]西安空间无线电技术研究所,西安710000

出　　处：《中国空间科学技术》2023年第1期109-118,共10页Chinese Space Science and Technology

基　　金：国家自然科学基金(52075446,51675430)。

摘　　要：为解决索网天线在轨运行过程中的振动抑制问题,提出一种基于重复自抗扰复合控制器的主动振动控制方法。首先,使用有限元法建立天线型面的振动动力学模型,基于模态截断的方法对动力学模型进行降阶并转化为状态空间方程的形式。然后,基于能量最小化准则,使用遗传算法对传感器/作动器的位置进行优化。最后,设计了基于线性自抗扰控制的天线型面振动主动抑制算法,并在此基础上设计前馈重复控制算法,通过对反馈控制周期性误差的学习,提高控制器抑制周期性扰动的能力。仿真结果表明,相比无控状态时,所提出的控制方法可将型面扰动降低97.0%,振动抑制效果优于PID控制器。所设计的控制方法为天线型面的振动控制提供了一种新的技术手段。In order to solve the problem of vibration suppression of cable net space antenna,an active vibration control method based on active disturbance rejection repetitive compound controller was proposed.At first,the vibration dynamic model of antenna surface was established by using finite element method.The model order was reduced based on modal truncation method.Then,based on the energy minimization criterion,the position of sensor/actuator was optimized by using genetic algorithm.Finally,the active suppression algorithm of antenna surface vibration based on linear active disturbance rejection control was designed,and the feedforward repetitive control algorithm was designed to improve the ability of the controller to suppress periodic disturbance by learning the periodic error of feedback control.The simulation results show that the proposed control method can reduce the profile disturbance by 97.0%,and the control effect is better than PID controller.The designed control method provides a new technical approach for the vibration control of antenna mesh surface.

关 键 词：天线型面 遗传算法 线性自抗扰控制(LADRC) 重复控制 主动振动抑制 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]