A variable frequency damping support device for a space camera

Abstract

A frequency-variable damping support device for a space camera, comprising an upper hinge plate (1) and the like. The upper hinge (1) and the lower hinge (10) are respectively connected to the outer connecting rods (outer connecting rod one (2), outer connecting rod two (3)) and inner connecting rods through joint bearings (5) and pin shafts (6). The rods (7) are connected, and the damping rubber layer (8) is filled between the outer connecting rod one (2), the outer connecting rod two (3) and the inner connecting rod (7). ) to create a controllable structural gap between the first outer link (2), the second outer link (3) and the inner link (7), finally realizing the support for the camera. Through the design of the gap, the present invention enables the camera to exhibit frequency conversion characteristics of three different frequencies under small-scale vibration, launch section vibration, and on-orbit weightlessness, which not only ensures the effect of large damping and vibration reduction, but also solves the problem of satellite structure on-orbit microscopic The impact of vibration on camera imaging.

Description

technical field [0001] The invention belongs to the technical field of aerospace optical remote sensors, and relates to a space camera support device, in particular to a frequency-variable damping support device. Background technique [0002] With the development of aerospace remote sensing technology, remote sensing cameras are constantly becoming larger and lighter, and the technical indicators of cameras are constantly improving, and the requirements for satellite platforms are becoming more and more stringent. Limited by processing technology, the flatness of the camera assembly surface on the satellite platform can no longer meet the requirements of the current camera. When the satellite is in orbit, the problem of camera image distortion caused by dynamic flutter of moving parts is also becoming more and more prominent. With the weight of the camera With the improvement of the camera, the tolerance of the camera to the vibration environment of the transmission section ...

AI Technical Summary

Problems solved by technology

The first form is adaptable to the unevenness of the camera assembly surface, but it cannot suppress the micro-vibration within 60Hz in orbit, and even the suppression effect is not obvious at around 100Hz, and it will cause obvious image distortion during the whole-satellite mobile imaging. The second form has higher requirements on the camera assembly surface, the system is relatively complicated, and needs to introduce pyrotechnics, which is not economical in use

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