Non-cooperative target satellite acquisition device and acquisition method

Abstract

The invention discloses a non-cooperative target satellite acquisition device and an acquisition method, and belongs to the technical field of aerospace. The non-cooperative target satellite acquisition device includes an outer shell, two four-link capturing pawl mechanisms, four horizontal locking mechanisms, a screw rod and a controller; the two four-link capturing pawl mechanisms are arranged in the outer shell face to face, and the lower parts thereof are fixedly connected with an installing bottom plate; the lower end of the screw rod crosses through the installing bottom plate, and the lower end thereof is connected with a driving mechanism; four horizontal locking mechanisms are respectively located at outside of the two four-link capturing pawl mechanisms, and every two horizontal locking mechanisms are installed on the upper part of the outer shell; both sides of the upper part of the four-link capturing pawl mechanisms are respectively equipped with pressure lever mechanisms; when the four-link capturing pawl mechanisms are descended, the pressure lever mechanisms compress the horizontal locking mechanism to horizontally glide towards inside; the top part of the outer shell is equipped with a photoelectric sensor, and the photoelectric sensor and the driving mechanism are electrically connected with the controller. The non-cooperative target satellite acquisition device is widely applied to the acquisition of various space crafts, and the non-cooperative target satellite acquisition device is wide in application range, big in tolerance, quick in response speed, high in reliability, and others.

Description

technical field [0001] The invention relates to a capture mechanism, in particular to a non-cooperative target satellite capture device and capture method, belonging to the technical field of aerospace. Background technique [0002] With the development of aerospace technology and the continuous expansion of space missions, on-orbit capture technology has become a research hotspot in the space field. The capture of non-cooperative targets can realize on-orbit service, space garbage removal and some military tasks, which is a very forward-looking and challenging subject in on-orbit capture technology. However, the capture of non-cooperative targets in space has not yet been demonstrated in orbit. In fact, many space missions involve the capture of non-cooperative targets, such as assisting satellites that fail to enter the predetermined orbit, repairing and replacing faulty unit instruments for satellites that have failed, and deploying auxiliary mechanisms (if the deploymen...

AI Technical Summary

Problems solved by technology

[0003] Compared with cooperative targets, the biggest difference between non-cooperative targets is that the target to be docked has no special docking interface (such as using mechanical, electrical and other equipment to achieve a reliable connection between the serving spacecraft and the served spacecraft), which leads to the docking process. The randomness and high requirements for docking autonomy

[0004] Traditional rigid capture technology needs to be dynamically and accurately aligned with the predetermined capture position, and the relative movement between the capture mechanism and the target aircraft must be accurately controlled during the capture process. If there is a relative displacement deviation, angular deviation, etc. during the capture process, the capture may fail

Most of the satellites launched at present have a mass of more than 1000KG. It takes a large driving force to drag the target satellite during the capture process. At the same time, it will generate a large impact force during the capture process, and even cause damage to the target satellite and the capture mechanism.

In addition, due to the short capture time, it is difficult for the mechanical arm used to capture the target satellite to make a follow-up response in a short time, these factors greatly increase the difficulty of capture

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