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Attitude tracking control method for satellite earth scanning

A tracking control and satellite technology, applied in the direction of attitude control, non-electric variable control, control/regulation system, etc., can solve the problems of increasing satellite volume and weight, reducing reliability, etc., and achieve trajectory planning that is simple in description and avoids complicated trajectory Process and Endpoint Effects

Pending Publication Date: 2020-11-06
SHANGHAI AEROSPACE CONTROL TECH INST
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a satellite-to-earth scanning attitude tracking control method for the above-mentioned deficiencies in the prior art, to solve the need to use a rotating mechanism to realize satellite-to-earth scanning, thereby increasing the size and size of the satellite. weight, making the problem of reduced reliability

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  • Attitude tracking control method for satellite earth scanning
  • Attitude tracking control method for satellite earth scanning
  • Attitude tracking control method for satellite earth scanning

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Embodiment Construction

[0047] The following is attached Figure 1~4 and Specific Embodiments A satellite attitude tracking control method for ground scanning proposed by the present invention will be further described in detail. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and all use imprecise scales, which are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention. In order to make the objects, features and advantages of the present invention more comprehensible, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present...

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Abstract

The invention discloses an attitude tracking control method for satellite earth scanning. The method comprises the steps of describing a geographic longitude and latitude track of a scanning point byadopting an Archimedes curve to obtain a scanning track of a satellite on the earth surface; combining the scanning trajectory of the satellite on the earth surface with the current satellite positioninformation to obtain attitude angle trajectory instruction information of satellite tracking; estimating the magnitudes of moment and angular momentum according to the attitude angle trajectory instruction information tracked by the satellite; and according to the magnitudes of the moment and the angular momentum, taking the three-axis attitude angle of the satellite as a controlled variable, and performing tracking control on the attitude angle of the satellite by adopting PD control and feedforward compensation control laws. According to the invention, the function of scanning the earth surface according to a specific track through maneuvering of satellite attitudes is realized, so that the structure of the satellite is simpler, the size and weight of the satellite can be effectively reduced, and the reliability of the system is improved.

Description

technical field [0001] The invention relates to the planning of satellite scanning track on the ground surface, the generation of attitude reference command and the tracking control technology of attitude track, in particular to an attitude tracking control method of satellite scanning to the ground. Background technique [0002] When the satellite is over the top, when performing communication and scanning investigations on a specific area, it often requires a load rotation mechanism such as an antenna or a camera to realize staring or tracking a specific trajectory. When the satellite scans on the surface, the volume and weight of the satellite are increased, making it Reduced reliability. However, on satellites with small volume or no rotating mechanism, the attitude maneuver of the star is required to complete the ground scanning task of the fixed antenna or camera on the star. Contents of the invention [0003] The technical problem to be solved by the present invent...

Claims

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Application Information

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IPC IPC(8): G05D1/08
CPCG05D1/0808
Inventor 尹俊雄王蕊张小伟王静吉叶立军陈银河
Owner SHANGHAI AEROSPACE CONTROL TECH INST
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