A Ground Aiming Mechanism for Space Camera

Abstract

The utility model relates to a ground aiming mechanism for a space camera, which belongs to the technical field of aerospace remote sensing. The invention solves the problems of poor maneuverability and high power consumption when adjusting the overall attitude of the satellite in the existing satellite sideways imaging process. The shafting assembly includes a turntable, a fixed inner shaft and a base. The fixed inner shaft has a ring structure and one end is fixed on the base. The turntable is rotatably set on the fixed inner shaft. Connected, the feedback assembly includes a moving inner shaft, a photoelectric encoder and a fixed flange, the moving inner shaft is installed in the fixed inner shaft and the upper part of the moving inner shaft is fixed coaxially with the turntable, and the photoelectric encoder The inner ring is set on the moving inner shaft, and the outer ring of the photoelectric encoder is connected to the fixed inner shaft through a fixed flange. The drive assembly includes a ceramic ring and several ultrasonic motors, and the ceramic ring is coaxially set on the lower part of the turntable. , a number of ultrasonic motors are fixed on the base and distributed evenly along the circumference of the turntable, and the ceramic feet of each ultrasonic motor are in contact with the ceramic ring.

Description

technical field [0001] The invention relates to a ground aiming mechanism for a space camera, which belongs to the technical field of aerospace remote sensing. Background technique [0002] The existing large-angle satellite side-sway imaging technology uses components such as reaction flywheels and control moment gyroscopes to realize the large-angle side-sway or pitch-yaw maneuver of the entire satellite, and to image the adjacent areas of the sub-satellite point. [0003] The disadvantages of this side-swing imaging are: a) Poor maneuverability and high power consumption. It is difficult to achieve a fast speed for large-angle maneuvering of the entire satellite by relying on flywheels, control moment gyroscopes and other components, especially when the overall mass of the satellite is large, and it is difficult to achieve Fast maneuvering; b) low reliability and high failure rate of the control moment gyro; c) high power consumption, and large-angle maneuvering of the en...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem of poor maneuverability and high power consumption when adjusting the overall attitude of the satellite in the existing satellite sideways imaging process, and further provides a ground-pointing mechanism for space cameras

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