Satellite micro-vibration test multi-point suspension system and design method thereof

Abstract

The invention provides a satellite micro-vibration test multi-point suspension system and a design method thereof. The method utilizes the excellent longitudinal low-rigidity characteristic of elastic ropes to design a frequency of the suspension system according to an intrinsic frequency of a suspended object, selects the number and rigidities of the suspension elastic ropes and analyzes difference and similarity of a single-point suspension method and a multi-point suspension method so as to obtain the characteristics and the composition of the suspension system suitable for different working conditions and simulate an in-orbit state of a satellite to fulfill the aim of a micro-vibration test. The suspension method has various forms, is flexible to design and is convenient and rapid to set up; the number and the suspension positions of the suspension elastic ropes can be changed according to the specific test conditions; and the design method is widely applied, is convenient for interface design, effectively utilizes the space and has higher universality.

Description

technical field [0001] The invention relates to a satellite micro-vibration test method, in particular to a satellite micro-vibration test multi-point suspension system and a design method thereof. Background technique [0002] With the development of aerospace technology, the precision requirements for sensitive loads are getting higher and higher, and the application of vibration suppression is becoming more and more urgent. The micro-vibration test conditions need to be continuously updated and guaranteed. How to simulate the in-orbit weightlessness state of the satellite and its sensitive loads, and realize the performance test under the condition of micro-vibration disturbance is particularly important. [0003] In order to simulate the state of weightlessness, the aerospace field often uses suspension tests to simulate the on-orbit performance of the assessment load. If the influence of the suspension system on the test is required to be negligible, the frequency of th...

AI Technical Summary

Problems solved by technology

However, the conventional steel wire rope suspension method has large longitudinal stiffness and high frequency, which cannot meet the requirements of the weightless state.

Moreover, the single-point suspension method is only suitable for light-weight and small-volume loads, and it cannot meet the requirements for suspended objects with large masses and large volumes such as entire stars.

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