Method for determining and controlling high-precision gesture of space-based telescope

A control method and telescope technology, applied in the field of spacecraft, can solve problems such as the inability to meet the needs of space science detection, and achieve the effect of improving imaging quality

Inactive Publication Date: 2017-05-24
SHANGHAI SATELLITE ENG INST
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Problems solved by technology

[0003] However, the detection of exoplanets puts forward higher requirements on the accuracy and stability of space-based telescopes. At present, traditional control methods cannot meet the needs of existing space science detection.

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  • Method for determining and controlling high-precision gesture of space-based telescope

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Embodiment Construction

[0020] The embodiments of the present invention are described in detail below: the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation is provided, but the protection scope of the present invention is not limited to the following embodiments.

[0021] like figure 1 As shown, the embodiment of the present invention provides a space-based telescope high-precision attitude determination and control method, including the following steps:

[0022] S1. Introduce stellar photometry data from the telescope, combine high-precision star sensors, and combine the speed information measured by the gyro to achieve sub-arc-second attitude determination accuracy and realize high-precision attitude measurement of space-based telescopes;

[0023] S2. The attitude measurement data is transmitted to the estimator, and the extended Kalman and other filtering algorithms are used to realize high-precision estimation of the ...

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Abstract

The invention relates to a method for determining and controlling a high-precision gesture of a space-based telescope. As a telescope for optical detection is combined with a star sensor for data measurement, in combination with velocity information measured by a gyroscope, high-precision measurement of a gesture is realized; gesture measurement data is delivered to a Kalman filter, to realize high-precision estimation of the gesture; and a controller provides a control law for a maglev mechanism and a flywheel, so as to realize high-precision control of the gesture. According to the method disclosed by the invention, determination and control in the high-precision gesture of the space-based telescope can be realized, and therefore imaging quality of the space-based telescope is improved; and the method disclosed by the invention has an engineering application value.

Description

technical field [0001] The invention relates to the field of spacecraft, in particular to a high-precision attitude determination and control method for a space-based telescope. Background technique [0002] As a typical detection object, exoplanets carry the significance of discovering habitable planets and extrasolar life, and are the hot spot and focus of current research. Develop fine spectral measurement technology, build large-scale space telescopes, study exoplanet atmospheres, finely characterize the physical and chemical characteristics of exoplanets, and continue to carry out research on exoplanets with higher precision, greater depth, and stronger efforts. Discover and explore. [0003] However, exoplanet detection puts forward higher requirements on the accuracy and stability of space-based telescopes. At present, traditional control methods cannot meet the needs of existing space science detection. Therefore, it is urgent to carry out research on high-precisio...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/08G01C21/02G01C21/16
CPCB64G1/244G01C21/025G01C21/165
Inventor 王伟张恒谢攀陈晓柳明星
Owner SHANGHAI SATELLITE ENG INST
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