Method for setting alternating magnetic field for despinning spacial non-magnetized metal debris

A technology of metal fragments and alternating magnetic fields, applied in the direction of adjusting magnetic variables, instruments, space navigation equipment, etc., can solve the problems of long derotation time and low energy transfer efficiency, and achieve the effect of improving efficiency

Active Publication Date: 2016-06-29
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing technology only uses the first case to generate the vortex torque of derotation, but does not consider

Method used

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  • Method for setting alternating magnetic field for despinning spacial non-magnetized metal debris
  • Method for setting alternating magnetic field for despinning spacial non-magnetized metal debris
  • Method for setting alternating magnetic field for despinning spacial non-magnetized metal debris

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Embodiment Construction

[0032] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0033] The present invention proposes a method of utilizing the orthogonal alternating magnetic field and fragments moving in the magnetic field to form derotation torque. Its technical feature is that it contains the following contents:

[0034] (1) The action form of the magnetic field

[0035] In the plane perpendicular to the main axis of rotation of the non-magnetized metal fragments, two mutually perpendicular directions are arbitrarily selected, with the passing point of the main axis of the fragments as the origin, and the two perpendicular directions are respectively marked as x-axis and y-axis. A magnetic field N and a magnetic field M are applied in two axial directions, respectively. For the convenience of discussion, it is stipulated that when the rotation direction of the debris is counterclockwise, it is positive, the positive direction of the mag...

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Abstract

The invention relates to a method for setting an alternating magnetic field for despinning spacial non-magnetized metal debris, i.e., a method for setting a torque despinning magnetic field formed by setting alternating magnetic fields which are mutually orthogonal in the space on a plane vertical to a rotating axis outside the rotated non-magnetized metal debris and utilizing an eddy current effect generated inside a metal conductor to act with external related magnetic fields. Compared with the prior art, the method provided by the invention has the advantages that on the basis of analyzing an eddy current torque generating substance, an eddy current torque generating way is changed, so that a single way that magnetic lines of force are cut by a moving conductor is transformed into a compound way that an eddy current torque is generated under the combined action of the moving conductor and the changed magnetic fields, the torque despinning magnetic field setting conditions are put forward, and the efficiency of energy transfer is improved.

Description

technical field [0001] The invention belongs to the technical field of space debris cleaning, and relates to an alternating magnetic field method for derotating non-magnetized metal debris in space. Background technique [0002] "Space debris" means non-functional man-made objects in Earth orbit or re-entering the atmosphere, including fragments and components thereof. With the increasing frequency of human spaceflight activities, the number of space debris is increasing exponentially, and they are concentrated in areas with an altitude of 800-1000km. Due to the influence of space perturbation, these debris are often in a state of high-speed spin motion. This has brought great difficulties to the capture and clean-up of space debris. Derotation of space debris is a top priority for capture and cleanup. At present, there are mainly contact racemization and non-contact racemization. The magnetic field-based space debris eddy current derotation technology is a non-contact de...

Claims

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Application Information

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IPC IPC(8): G05F7/00B64G4/00
CPCB64G4/00G05F7/00
Inventor 骆光照徐永强孙楚昕宋受俊岳晓奎
Owner NORTHWESTERN POLYTECHNICAL UNIV
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