Active vibration control method of a novel on-orbit assembled large-scale two-dimensional planar phased array antenna

IF 2.3 3区工程技术 Q2 MECHANICS

Acta Mechanica Pub Date : 2024-10-17 DOI:10.1007/s00707-024-04120-9

Chaochen Jin, Xiang Liu, Heng Yu, Guoping Cai, Jun Sun, Dongfang Zhu

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引用次数: 0

Abstract

Planar phased array antennas have significant applications in fields such as space communication, electronic reconnaissance, navigation, remote sensing and deep space exploration. This study focuses on the active vibration control of a novel on-orbit assembled large-scale two-dimensional planar phased array antenna. The novel structure and assembly method of the antenna are introduced. Using the finite element method, we develop the dynamic model of antenna structure. Due to the low and dense natural frequency characteristics of the structure, the distributed cable actuators are used to suppress the vibration. Considering the unilateral and saturated constraints of the cable force, the control law is designed by combining the linear quadratic regulator with the Bang–Bang regulator. The controllability criterion and particle swarm optimization algorithm are adopted to optimize the actuator distribution. We validate established dynamic model and control method by numerically simulating. The simulation results indicate that the dynamic model can describe the dynamic behavior as accurately as ABAQUS; the controller can effectively suppress the vibration of the antenna structure.

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新型在轨组装大型二维平面相控阵天线的主动振动控制方法

平面相控阵天线在空间通信、电子侦察、导航、遥感和深空探测等领域有着重要的应用。本研究的重点是新型在轨组装大型二维平面相控阵天线的主动振动控制。介绍了天线的新型结构和组装方法。利用有限元方法，我们建立了天线结构的动态模型。由于该结构的固有频率较低且密集，因此采用了分布式缆索激励器来抑制振动。考虑到缆索力的单边约束和饱和约束，设计了线性二次调节器与 Bang-Bang 调节器相结合的控制法则。采用可控性准则和粒子群优化算法来优化致动器分布。我们通过数值模拟验证了所建立的动态模型和控制方法。仿真结果表明，动态模型能够像 ABAQUS 一样准确地描述动态行为；控制器能够有效地抑制天线结构的振动。

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来源期刊

Acta Mechanica 物理-力学

CiteScore

4.30

自引率

14.80%

发文量

292

审稿时长

6.9 months

期刊介绍： Since 1965, the international journal Acta Mechanica has been among the leading journals in the field of theoretical and applied mechanics. In addition to the classical fields such as elasticity, plasticity, vibrations, rigid body dynamics, hydrodynamics, and gasdynamics, it also gives special attention to recently developed areas such as non-Newtonian fluid dynamics, micro/nano mechanics, smart materials and structures, and issues at the interface of mechanics and materials. The journal further publishes papers in such related fields as rheology, thermodynamics, and electromagnetic interactions with fluids and solids. In addition, articles in applied mathematics dealing with significant mechanics problems are also welcome.