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Self-adaptive drag-free control method based on set value identification algorithm

A control method and self-adaptive technology, applied in the fields of control science and engineering, aerospace, and can solve problems such as the lack of full utilization of set value information and the inability to achieve drag-free control.

Active Publication Date: 2021-01-19
UNIV OF SCI & TECH BEIJING
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AI Technical Summary

Problems solved by technology

[0005] Existing methods mainly use the precise information within the measurement range of the gravity gradiometer for system analysis and controller design, but do not make full use of the set value information outside the range, and cannot realize drag-free control under saturation constraint measurement

Method used

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  • Self-adaptive drag-free control method based on set value identification algorithm
  • Self-adaptive drag-free control method based on set value identification algorithm
  • Self-adaptive drag-free control method based on set value identification algorithm

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Embodiment Construction

[0080] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0081] Such as figure 1 As shown, the embodiment of the present invention provides an adaptive no-drag control method based on the set value identification algorithm, the method includes:

[0082] S101, processing the measurement information inside and outside the measurement range of the gravity gradiometer to obtain the set-valued measurement value of the residual acceleration of the gravity gradiometer, wherein the measurement information is the residual acceleration of the gravity gradient satellite along the orbital flight direction; the gravity gradiometer The measurement information inside and outside the measurement range includes: the precise information within the measurement range of the gravity gradiometer and the set valu...

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Abstract

The invention provides a self-adaptive drag-free control method based on a set value identification algorithm, and belongs to the technical field of aerospace, control science and engineering. The method comprises the steps of processing measurement information inside and outside a measurement range of a gravity gradiometer to obtain a set value type measurement value of the gravity gradiometer for residual acceleration, wherein the measurement information is the residual acceleration of a gravity gradient satellite in the flight direction of an orbit; establishing an identification algorithmto estimate the resistance gain coefficient of the gravity gradient satellite along the orbital flight direction according to the obtained set value type measurement value of the gravity gradiometer to the residual acceleration; and according to the estimated resistance gain coefficient, constructing a self-adaptive controller of the gravity gradient satellite along the flight direction of the orbit. According to the invention, drag-free control under saturation constraint measurement can be realized.

Description

technical field [0001] The invention relates to the fields of aerospace, control science and engineering technology, in particular to an adaptive no-drag control method based on a set value identification algorithm. Background technique [0002] The earth's gravitational field and its changes reflect the spatial distribution and movement of the earth's surface and interior materials, and at the same time determine the fluctuation and change of the geoid. Therefore, determining the fine structure of the Earth's gravitational field is not only a requirement for geodesy, oceanography, seismology, space science, astronomy, planetary science, deep space exploration, national defense construction, etc., but also for seeking resources and protecting the environment for all human beings. provide important information resources for disaster prevention and forecasting. [0003] Drag-free control technology is one of the key technologies of gravity gradient satellites. The so-called ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 郭金张纪峰谈树萍赵延龙王婷
Owner UNIV OF SCI & TECH BEIJING
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