大型空间可展开天线结构的主动振动控制  

Active vibration control for large-space deployable antennas

作　　者：张家应[1] 孟雷[1] 王军[1] 

机构地区：[1]北京航空航天大学航空科学与工程学院,北京100191

出　　处：《飞机设计》2015年第6期15-17,共3页Aircraft Design

摘　　要：利用内置压电元件的主动构件作为作动器,对大型空间可展开天线结构进行了振动主动控制的研究。分析了含压电单元的空间天线结构的振动主动控制的原理和方法,采用独立模态控制法对可展开天线结构实施主动控制。并且基于作动器的模态影响矩阵对作动器进行了优化布置,使其效能达到最大。最后采用LQR方法对结构进行控制,应用Matlab软件对该压电结构进行仿真实验控制。仿真的结果表明,通过振动主动控制明显增加了可展开天线结构的结构阻尼,取得了十分有效的振动抑制效果。Built piezoelectric elements as actuators active member of the large space deployable antenna structure of active vibration control. Analysis the active vibration control principles and methods about a space antenna structure containing the piezoelectric element. Use of independent modal control method for deployable antenna structure implemented active control. Based on actuator modal effect matrix,the location of actuator were optimized to achieve maximum performance. Then using the LQR method to control structure,application software Matlab was used of the piezoelectric structure control. The simulation results show that the active control by the vibration can be expanded significantly increases the structural damping of the antenna structure,to obtain a perfect effective vibration suppression effect.

关 键 词：空间结构 主动振动控制 压电作动器 LQR 

分 类 号：V443.4[航空宇航科学与技术—飞行器设计] TB535[理学—物理]