Method for resisting strong electromagnetic interference of aero-engine electronic controller case

Abstract

The invention relates to the field of aero-engine electronic controller cases, in particular to a method for resisting strong electromagnetic interference of an aero-engine electronic controller case.The method comprises the following steps: S1, simulation analysis: evaluating the electromagnetic coupling characteristics of a case, and obtaining the position of an electromagnetic protection weakpoint; S2, material optimization: carrying out nickel plating treatment on the carbon fiber precursors and weaving the carbon fiber precursors into nickel-plated carbon fiber cloth; S3, compression molding: on the basis of S1, integrally molding the case main body material and the shielding material. S4, gap protection: forming an annular groove in the gap connecting position of the box body, andproviding a space for modular gap protection materials; S5, combined assembly: assembling the cover plate and the box main body in a screw fastening mode. The aviation VPX case is reasonable in design, novel in structure, capable of effectively solving the problems that existing aviation VPX case protection measures are scattered and low in protection index, capable of enhancing the anti-electromagnetic interference capacity and suitable for wide application and popularization.

Description

technical field [0001] The invention relates to the field of an aero-engine electronic controller box, in particular to a method for resisting strong electromagnetic interference for an aero-engine electronic controller box. Background technique [0002] Most of the aero-engine electronic controller chassis are made of aluminum alloy. Compared with the composite material chassis, there are disadvantages of poor low-frequency protection performance, poor heat insulation, and heavy weight. In the existing patent "Aero-engine Airborne Electronic Controller Chassis", the idea of ​​using carbon fiber composite materials as the chassis body is mentioned; and in order to improve the shielding efficiency of the chassis, electroless nickel plating is carried out on the inner and outer layers of the carbon fiber composite matrix. The coating process implemented in this patent to improve the shielding efficiency is difficult to implement, the steps are complicated, and the adhesion is ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, the present invention provides a method for resisting strong electromagnetic interference of an aero-engine electronic controller box, aiming at the problems of scattered protective measures and low protection indicators in solving the problem of electromagnetic interference in the existing aviation VPX box, To improve the electromagnetic protection performance of the chassis as a whole, and at the same time achieve the purpose of weight reduction, heat insulation, moisture resistance, and salt spray prevention of the chassis, the technical scheme adopted in the present invention is as follows:

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