An eight-axis turntable for electromagnetic window testing

Abstract

The invention belongs to the field of machinery technology, and relates to an eight-axis turntable for electromagnetic window testing. The turntable comprises a rolling ring assembly, a pitching assembly, an upward-and-downward linear assembly, a forward-and-backward linear assembly and a direction assembly. The turntable realizes transverse rolling rotary movement, pitching rotary movement, upward-and-downward elevating movement, frontward-and-backward translational movement and rotation movement of an electromagnetic window product, and realizes transverse rolling rotary movement, pitching rotary movement and rotation movement of a signal source. According to the eight-axis turntable, always perpendicularity between a tangential plane of a random point arm surface of the tested electromagnetic window product and the axis of the emitting surface of the signal source is ensured through eight-axis combined movement; and furthermore a fact that the emitting position of the signal source is always at the circle center of a fixed area arc surface on the tested electromagnetic window product is realized. The eight-axis turntable has advantages of performing real-time compensation on the angle and position error in measurement through eight-axis linkage, realizing accurate measurement and automatic measurement, and more accurately realizing electric performance testing on the electromagnetic window product with large eccentric moment and large dimension.

Description

technical field [0001] The invention belongs to the technical field of machinery and relates to an eight-axis turntable for electromagnetic window testing. [0002] Background technique: [0003] The electromagnetic window is a functional part of the aircraft, which not only protects the radar antenna from the adverse external environment, but also meets the electrical performance requirements of the radar antenna. Therefore, the electromagnetic window needs to test various parameters before use, the most basic of which is the electrical thickness test and electrical performance test. Electrical thickness test and electrical performance test turntables are important equipment for electromagnetic window performance testing. However, due to structural reasons, the current test turntables for this type of product cannot guarantee that the tangent plane of the arc surface of the electromagnetic window is perpendicular to the axis of the emission surface of the signal source. Ther...

AI Technical Summary

Problems solved by technology

Electrical thickness test and electrical performance test turntables are important equipment for electromagnetic window performance testing. However, due to structural reasons, the current test turntables for this type of product cannot guarantee that the tangent plane of the arc surface of the electromagnetic window is perpendicular to the axis of the emission surface of the signal source. Therefore, In terms of electrical performance testing, the data error is very large, which cannot accurately reflect the electrical performance characteristics of electromagnetic window products, and the current type of test turntable is mostly suitable for small loads with small eccentric moments

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