摘要
为抑制空间可展开索网天线在服役阶段因外部激励引起的结构振动,提出一种自适应复合控制方法对天线结构振动进行高增益精准控制。首先,采用多根并联主动拉索作为执行器建立索网天线动力学模型。然后,综合比例积分微分(proportional-integral-differential,PID)控制和滤波-x最小均方控制设计自适应复合控制器,基于天线结构主振频率通过多个独立窄带自适应子控制器提供高控制增益,改善PID控制针对频率振动控制增益不足的问题。最后,以天线结构径向振动主动控制为目标进行仿真试验验证研究。仿真和试验结果表明自适应复合控制方法具有良好的控制性能,验证了自适应复合控制方法对天线结构振动的高效控制能力。所设计控制方法为天线结构振动主动控制提供了一种有效的技术手段。
To suppress the structural vibration caused by external excitations during the service period of a space deployable cable-net antenna,an adaptive composite control method was proposed to accurately control the antenna structural vibration with high gain.First,a dynamic model of the cable-network antenna was established using multiple parallel active cables as actuators.Then,an adaptive composite controller was designed by integrating the proportional-integral-differential(PID)control and filtered-x least mean square control.High control gain was provided through multiple independent narrowband adaptive sub-controllers based on the main vibration frequency of the antenna structure,improving the problem of insufficient gain of the PID control for frequency vibration control.Finally,the simulation test verification was carried out with the goal of active radial vibration control of antenna structures.The simulation and experimental results show that the adaptive composite control method has good control performance,and verify the efficient control ability of the adaptive composite control method against the antenna structure vibration.The designed control method provides an effective technical mean for the active vibration control of antenna structures.
作者
宿鹏
刘磊
杨政霖
李青
王辉
SU Peng;LIU Lei;YANG Zhenglin;LI Qing;WANG Hui(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)
出处
《振动与冲击》
北大核心
2025年第14期220-228,共9页
Journal of Vibration and Shock
基金
国家自然科学基金(52305117,52075446)。
关键词
索网天线
振动主动控制
复合控制
自适应控制
拉索作动器
cable-net antenna
active vibration control
composite control
adaptive control
cable actuator
