Compact six-freedom-degree accurate tracking and pointing device for satellite load

Abstract

The invention discloses a compact six-freedom-degree accurate tracking and pointing device for a satellite load, and the device is formed by the series connection of an upper platform and a lower platform in a normal direction of an installation surface. The upper platform comprises a pointing interface assembly, an adjustment interface assembly, six sets of drive assemblies, an upper platform control single-chip microcomputer, and an upper platform compressing and releasing device. The upper platform comprises an adjustment assembly, a lower platform compressing and releasing apparatus, a fixed plate, and a lower platform control single-chip microcomputer. The device can avoid the interference in a tracking and pointing work space under the cooperation of the upper and lower platforms, and meets the demands of the large-range and large-angle continuous precise follow-up tracking and orientation locating of a satellite effective load. The device can effectively reduce a motion envelopespace of the device through extending the work space of the upper platform through the lower platform, achieves the compact design, and saves the satellite space resources. The tracking and pointingdirection can be any one direction of the six degrees of freedom, and the device can flexibly achieve the full-airspace and full-disc tracking and pointing of the satellite effective load.

Description

technical field [0001] The invention relates to aerospace vehicles in the field of aerospace technology, in particular to a compact six-degree-of-freedom precise tracking and pointing device for satellite loads. Background technique [0002] Payloads such as optical instruments and antennas on satellites have higher and higher requirements for large-angle, large-scale tracking and pointing tasks and their accuracy, and there are multi-degree-of-freedom tracking and pointing requirements. In order to meet this requirement, only relying on satellite attitude Control has the problems of high cost and low efficiency, and when the satellite has more than two payloads that need to be tracked at the same time or point to different areas, the satellite attitude control cannot meet the requirements. Therefore, it is necessary to design a corresponding mechanism or device to carry the payload on the device to realize on-orbit large-angle, large-scale tracking and pointing tasks, and t...

AI Technical Summary

Problems solved by technology

However, although the traditional six-degree-of-freedom space pointing device can meet high-precision tracking and pointing functions, and is widely used in satellite precise pointing and positioning, vibration isolation and space docking, etc., it has limited working space for payloads, power supply / control cable routing, etc. In addition, if the working space is expanded by means of translation and rotation, the working envelope of the device on the satellite will be relatively large, which will seriously affect the space resources of other components on the satellite, and cause mechanical, optical and electromagnetic interference.

Images