A derotation control method for space tumbling target based on permanent magnet eddy current effect

Abstract

Disclosed is a space tumbling target de-spinning control method based on a permanent magnet eddy current effect. The method comprises the following steps: a service spacecraft docks in the working space of a mechanical arm, and is kept at a safety distance from a tumbling non-cooperative target; a visual inspection system carried by the service spacecraft measures the direction of a target angular momentum vector H and the direction of a spin axis position vector Zb, and the mechanical arm drives a permanent magnet eddy current braking device at the end to an initial de-spinning position, and the docking position is 100mm from the surface of the target in the direction of the target angular momentum vector; the permanent magnet eddy current braking device is started, the direction of a vector outputting an external torque T1 is corrected according to the real-time change of attitude angle in the tumbling process of the target until the angle of nutation attenuates completely, and the rotation state of the target is changed to a single spinning motion state; the position of the permanent magnet eddy current braking device is adjusted to the side of the tumbling non-cooperative target, the permanent magnet eddy current braking device is started to output a brake torque T2 until the single spinning motion state attenuates completely; after the target is completely de-spun, an end actuator is replaced with a grasping paw, and the target is captured directly by the mechanical arm.

Description

technical field [0001] The invention relates to a derotation control method of a space rolling target based on a permanent magnet eddy current effect, and belongs to the technical field of a space rolling target derotation control method. Background technique [0002] Human exploration activities in outer space are gradually increasing, and a large number of space launch missions are carried out every year to meet the needs of communication, weather monitoring, and maintenance of the International Space Station. Human activities have had a lasting and far-reaching impact on the space environment. A large number of space debris such as rocket propellers, failed satellites, spacecraft mission discards, spacecraft disintegration and collision derivatives in space pose a huge threat to the development of human spaceflight. , therefore, the active removal of space debris is imminent. Usually, space debris has lost the ability to adjust its attitude and has been running out of co...

AI Technical Summary

Problems solved by technology

Using non-contact derotation methods, such as interstellar Coulomb force, gas pulse, laser, and particle beam bombardment methods, need to carry corresponding generation systems, which increases the complexity of the entire system. The non-contact derotation method also needs to simplify the generation system

[0004] The non-contact eddy current braking system using the principle of eddy current braking has been applied on the ground, and this principle is extended to space. For example, the effective air gap of the electromagnetic eddy current braking device proposed by Sugai et al. is only a few mm, which is very easy Collision occurs, which limits its application in the field of tumbling target derotation

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