Satellite dynamic and static isolation structure

Abstract

The static and dynamic isolation structure of a satellite provided by the present invention includes a load compartment, a platform compartment, and a non-contact magnetic levitation mechanism connected between the load compartment and the platform compartment. The present invention has the following innovative designs: 1) With spatial dynamic and static isolation, adopts the complete position and attitude decoupling control idea, and utilizes a high-precision, high-bandwidth satellite dynamic and static isolation structure, the satellite attitude and pointing accuracy is better than 5×10 ‑4 Accuracy and attitude stability are better than 5×10 ‑6 The ultra-high precision of degrees per second completely solves the bottleneck of the "double super" technology, and realizes the complete measurability and controllability of the load attitude. 2) Through the non-contact connection of the magnetic levitation mechanism, the dynamic and static isolation is realized, and the micro-vibration transmission from the activities of the platform cabin and the flexible parts to the load cabin is directly cut off, and the ultra-precise and ultra-stable working state of the load is effectively guaranteed, so as to achieve the effect of full-band vibration isolation. Greatly reduces bandwidth requirements for control system products. 3) The space separation between the two cabins effectively avoids the influence of the thermal deformation of the platform on the load direction.

Description

technical field [0001] The invention relates to an aerospace vehicle structure, in particular to a satellite dynamic and static isolation structure. Background technique [0002] Future high-performance satellites have requirements for load pointing accuracy and stability as high as 10 -4 degrees, 10 -6 degrees / second, which is more than 2 orders of magnitude higher than the current level. According to the traditional design method of fixed connection between load and platform, the load direction and stability depend on the platform control system. However, due to the unavoidable micro-vibration of the platform, and the limited bandwidth and precision of the control system products, there are micro-vibrations in the fixed connection design method. Difficult to measure, difficult to control" technical bottleneck, it is difficult to achieve the load "double exceeding" indicators. Contents of the invention [0003] In view of the defects in the prior art, the purpose of th...

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Problems solved by technology

[0003] In view of the defects in the prior art, the purpose of the present invention is to provide a satellite dynamic and static isolation structure that can effectively solve the problem that the load pointing accuracy and stability are difficult to be greatly improved

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