Electric array satellite sound and vibration integrated simulation test system

Abstract

The invention provides an electric array satellite sound and vibration integrated simulation test system, which is characterized by comprising an electric array sound field simulation system and a vibration simulation test system, wherein the electric array sound field simulation system is used for providing noise excitation and collecting sound signals; and the vibration simulation test system isused for providing vibration excitation and collecting acceleration signals. The electric array sound field simulation system comprises an electric loudspeaker array (1), wherein the electric loudspeaker array (1) comprises audio devices; the audio devices comprise loudspeakers; and a plurality of audio devices and a plurality of loudspeakers are arranged. The invention provides a sound and vibration test system, which is short in period and low in cost, for accomplishing a satellite mechanical environment test, the test period of satellite mechanical environment test simulation is greatly shortened, a complex mechanical environment of the coupling between noise and vibration in a radome during the satellite launching process can be simulated more authentically, the test efficiency is improved, the test cost is reduced, and test technical requirements of the satellite mechanical environment are met.

Description

technical field [0001] The invention relates to a mechanical environment simulation in a satellite launching stage, in particular to an acoustic-vibration integrated simulation test system for an electric array satellite. Background technique [0002] With the development and progress of aerospace technology, satellite dynamic environmental tests have shifted from single dynamic environmental tests to multiple dynamic comprehensive environmental tests. Acoustic test is a fast-growing branch of dynamic environmental test in recent years, and its development is closely related to the development of aerospace industry. Satellites are subjected to various dynamic environments during launch and flight, and the vibration environment is the most important. The artificial satellite at the head of the launch vehicle is affected by four main vibration sources: transient vibration caused by engine ignition, stage separation, etc.; vibration caused by thrust pulsation of the launch veh...

AI Technical Summary

Problems solved by technology

The first two environments are more serious near the vibration source, and the satellites far away from the vibration source are attenuated by the structural damping of the launch vehicle, and the high-frequency energy will be seriously attenuated

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