Active vibration control of large spatial planar phased array antenna

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Journal of Vibration and Shock ›› 2025, Vol. 44 ›› Issue (11) : 12-18.

AERONAUTICS AND ASTRONAUTICS

Active vibration control of large spatial planar phased array antenna

SHI Jiang, CAI Guoping*

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Abstract

Large spatial planar phased array antennas have important application backgrounds in aerospace engineering fields of earth observation and space-based early warning. However, due to their large size, high flexibility and low damping, they are prone to generate significant nonlinear vibration during in-orbit operation. Here, nonlinear dynamic behavior and active vibration control of large spatial planar phased array antennas were studied. Firstly, the nonlinear finite element method was used to solve
nonlinear dynamic problem of antenna structure. Secondly, a cable actuator was used to control vibration of antenna structure, and a design method for the control law considering the unidirectionality and saturation of cable control force was proposed. Finally, the theoretical study results were verified with numerical simulation. The simulation results showed that the proposed control strategy can effectively suppress vibration of the studied antenna structure.

Key words

planar phased array antenna / nonlinear vibration / control design / cable actuator

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SHI Jiang, CAI Guoping. Active vibration control of large spatial planar phased array antenna[J]. Journal of Vibration and Shock, 2025, 44(11): 12-18

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