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Stable expansion control method for space tethered formation

A space tether and control method technology, applied in non-electric variable control, control/regulation system, three-dimensional position/channel control, etc., can solve problems such as difficulty in stable deployment of the system

Active Publication Date: 2019-09-06
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0004] Due to the characteristics of nonlinear and strong coupling in system dynamics, the deployment of the system includes not only the complete release of the tether, but also the rotation of the system. Therefore, how to realize the stable deployment of the system is a relatively difficult problem. technology to study this unfolding process

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  • Stable expansion control method for space tethered formation

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Embodiment Construction

[0044] Embodiments of the present invention are described in detail below, and the embodiments are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0045] To realize the stable deployment of the triangular space tether formation and provide guarantee for the completion of related space tasks, the present invention proposes a stable deployment control method for the triangular space tether formation, which provides a feasible method for the actual deployment of the space tether formation. The plan laid the foundation for the formation system to successfully perform space tasks such as earth observation and earth orientation.

[0046] In order to achieve the above object, the technical solution adopted in the present invention comprises the following steps:

[0047] 1) Establish the dynamic model of the triangular configuration space tether formation;

[0048] 2) Design the control law for the stable deplo...

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Abstract

The invention provides a stable expansion control method for a space tethered formation. The method comprises the steps of firstly building a kinetic model of the triangular space tethered formation by inputting kinetic energy and potential energy of a formation system into Lagrange's dynamical equations; and then determining a triangular space tethered formation stable expansion control law. According to the method provided by the invention, when the kinetic model of the triangular space tethered formation is built, on the basis of a traditional mass point connection rod model, the elasticityof a tethered rope is considered, and the flexibility of the system is fully reserved. Furthermore, in stable expansion control of the triangular space tethered formation, the rope length and the spin velocity are comprehensively considered, so that the system can be stably expanded in a state of synchronous rotating and stretching, and the completion of the various subsequent space tasks of theformation is facilitated.

Description

Technical field [0001] The invention belongs to the research field of multi-spacecraft formation system control technology, and specifically relates to a stable deployment control method of a triangular configuration space tether formation. Background technology [0002] The space tether formation connects multiple satellites to form a specific structure through tethers. It not only has the characteristics of low cost, good performance, high reliability and strong flexibility of traditional multi-spacecraft systems, but also has the ability to accurately position and reduce fuel consumption. With the advantages of reducing consumption and improving lifespan, it is widely used in space missions such as earth observation and earth orientation. [0003] A typical triangular space tether formation is a planar triangular closed system consisting of three satellites and three tethers connected in series. After the system is launched into space, it needs to be controlled from the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/10
CPCG05D1/104
Inventor 黄攀峰周合张帆刘正雄
Owner NORTHWESTERN POLYTECHNICAL UNIV
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