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Release and recovery control method and system for tethered satellite

A technology of tethered satellites and control methods, which is applied in the field of tethered satellites, can solve problems such as uncertain system parameters, and achieve the effect of improving the steady-state accuracy

Pending Publication Date: 2022-03-01
中国星网网络应用有限公司
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Problems solved by technology

[0004] During the release and recovery process of the tethered satellite, the eccentricity of the tethered satellite’s center of mass orbit is usually regarded as zero. However, under space interference, the eccentricity of the tethered satellite’s barycenter orbit is not 0, and changes in a small range, resulting in indeterminate system parameters. Sure

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  • Release and recovery control method and system for tethered satellite
  • Release and recovery control method and system for tethered satellite
  • Release and recovery control method and system for tethered satellite

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Embodiment Construction

[0054] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0055] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be mechanical connection or electrical connection, or two The internal communication of each element may be directly connected or indirectly connected through an intermediary. Those skilled in the art can understand the specific meanings of the above terms according to specific situations.

[0056] Such as figur...

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Abstract

The invention provides a tethered satellite release and recovery control method and system. The method comprises the following steps: establishing a tethered satellite shimmy kinetic equation and a tethered satellite mass center orbital motion equation based on an orbital coordinate system and a body coordinate system of a tethered satellite system; a kinetic equation of tethered satellite shimmy is linearized, and then state transition is carried out on the kinetic equation to obtain a state equation Z after the kinetic equation is linearized; designing a guarantee value control law according to the state equation Z after the kinetic equation linearization and the system parameter uncertainty caused by the tethered satellite centroid orbit eccentricity rate; and applying the guaranteed value control law in the tethered satellite system to control release and recovery. The tethered satellite can be released and recycled stably, the tethered satellite cannot be wound in the releasing and recycling process, and the steady-state precision of releasing and recycling of the tethered satellite is improved.

Description

technical field [0001] The invention relates to the technical field of tethered satellites in aerospace engineering, in particular to a tethered satellite release and recovery control method and system. Background technique [0002] Tethered satellites are a very promising project, and they have many applications in space, and are also used to perform various space missions. The earliest application idea of ​​tethered satellites is a space elevator. With the advancement of materials, it has become a research hotspot today. According to the characteristics of tethered satellites, another application of tethered satellites is to assist orbit transfer, by cutting the tether or changing the length of the tether to assist orbit change. In addition, tethered satellites can also assist with aerodynamic braking and capture, where satellites are decelerated by tethered probes interacting with the atmosphere. The tethered satellite can also be used as a space trailer. The trailer ca...

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Application Information

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IPC IPC(8): G05D1/08G06F30/15
CPCG05D1/0833G06F30/15G06F2119/14
Inventor 饶海平王子涵李锦朝王任廷彭维峰
Owner 中国星网网络应用有限公司
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