Gravity Unloading Method of Membrane Phased-array Antennas Using Electrostatic Adsorption

IF 1.3 4区工程技术 Q2 ENGINEERING, AEROSPACE

Microgravity Science and Technology Pub Date : 2023-11-22 DOI:10.1007/s12217-023-10083-8

Wang Zhong, Jichuan Xiong, Yiqun Zhang

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Abstract

In this study, a gravity unloading method based on electrostatic adsorption is proposed to address the issue of large flexibility in membrane phased-array antennas. Through considering the gravity distribution of the antenna and the edge effect of the electrode system, the unloading efficiency and system robustness are improved using a grouping strategy and size optimization. The deformation equilibrium equation under both gravity and electrostatic fields is established, and the voltage optimization model of the electrode system is also formulated with the goal of complete compensation for gravity deformation. The advantages and effectiveness of the proposed method are demonstrated by comparing simulation and unloading experiment results with those obtained using the suspension method. Both results indicate that the electrostatic unloading method can achieve the same unloading effect as the suspension method. Moreover, without introducing in-plane deformations during unloading, this method enhances accuracy and provides valuable insights for optimizing the assembly and testing processes.

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膜相控阵天线的静电吸附重力卸载方法

针对膜相控阵天线柔性大的问题，提出了一种基于静电吸附的重力卸载方法。通过考虑天线的重力分布和电极系统的边缘效应，采用分组策略和尺寸优化提高了卸载效率和系统的鲁棒性。建立了重力场和静电场作用下的变形平衡方程，并以完全补偿重力变形为目标建立了电极系统的电压优化模型。通过与悬架法的仿真和卸载实验结果的比较，验证了该方法的优越性和有效性。结果表明，静电卸载方法可以达到与悬浮卸载方法相同的卸载效果。此外，在卸载过程中不引入平面内变形，该方法提高了精度，并为优化装配和测试过程提供了有价值的见解。

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来源期刊

Microgravity Science and Technology 工程技术-工程：宇航

CiteScore

3.50

自引率

44.40%

发文量

期刊介绍： Microgravity Science and Technology – An International Journal for Microgravity and Space Exploration Related Research is a is a peer-reviewed scientific journal concerned with all topics, experimental as well as theoretical, related to research carried out under conditions of altered gravity. Microgravity Science and Technology publishes papers dealing with studies performed on and prepared for platforms that provide real microgravity conditions (such as drop towers, parabolic flights, sounding rockets, reentry capsules and orbiting platforms), and on ground-based facilities aiming to simulate microgravity conditions on earth (such as levitrons, clinostats, random positioning machines, bed rest facilities, and micro-scale or neutral buoyancy facilities) or providing artificial gravity conditions (such as centrifuges). Data from preparatory tests, hardware and instrumentation developments, lessons learnt as well as theoretical gravity-related considerations are welcome. Included science disciplines with gravity-related topics are: − materials science − fluid mechanics − process engineering − physics − chemistry − heat and mass transfer − gravitational biology − radiation biology − exobiology and astrobiology − human physiology