Shape adjustment method of electrostatically formed film antenna based on collaborative optimization of voltage and cable end position

Abstract

The invention discloses an electrostatic-forming thin-film antenna profile adjustment method based on voltage and cable end position collaborative optimization. The method comprises the following steps: firstly, establishing an electrostatic-forming thin-film antenna finite element model based on actual measurement information of a manufactured electrostatic-forming thin-film antenna, and giving an initial electrode voltage value and a cable fixed end node initial position; then utilizing the electrode voltage value and the cable fixed end node position as optimal design variables, giving upper and lower limits of the optimal design variables, and performing analysis optimization by using thin-film surface node fitting profile precision as an optimization objective; and finally, obtaining an optimization result, and adjusting the electrode voltage and cable end position of the objective according to result value values obtained by optimization so as to ensure that the electrode voltage and the cable end position conform to the precision requirements. The method is capable of improving the effect obtained by performing thin-film surface profile by use of an electrode voltage; compared with cable force adjustment, the cable end position adjustment is more easy to realize during practical engineering, and the problem that engineering is difficult to realize due to mutual influence between cable forces in a process of guiding objective model adjustment by use of the finite element model is overcome.

Description

technical field [0001] The invention belongs to the technical field of radar antennas, and in particular relates to a method for adjusting the shape and surface of an electrostatically formed film antenna based on collaborative optimization of voltage and cable end positions. Background technique [0002] The working principle of the Electrostatic Forming Film Antenna (ECDMA) is to apply different voltages on the film reflective surface coated with a metal layer and the control electrode (generally the film is an equivalent zero potential surface, and the electrode is a high potential), and an electrostatic force is generated to move the film. Stretching, so that the film forms a reflective surface with a certain focal diameter ratio. The electrode voltage is adjusted in real time through the power supply, which can realize timely compensation for the shape error of the reflective surface. In addition, in order to further improve the ability to adjust the surface accuracy o...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for adjusting the shape and surface of the electrostatically formed film antenna based on the collaborative optimization of voltage and cable end position, aiming at solving the problem of effectively guiding the shape and surface adjustment of the electrostatically formed film antenna by using the finite element model

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