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Steady Sun Orientation Method for Satellites Constrained by Ground Pointing Bias

A satellite and deviation technology, applied in the field of spacecraft attitude control, can solve problems such as the expected attitude flip of the satellite, and achieve the effects of improving stability and reliability, reducing peak expected angular velocity and peak energy consumption, and overcoming singular phenomena

Active Publication Date: 2021-05-07
NAT UNIV OF DEFENSE TECH
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  • Abstract
  • Description
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Problems solved by technology

[0004] The main purpose of the present invention is to provide a stable satellite orientation method to the sun with the constraint of the ground pointing deviation, aiming at overcoming the strange phenomenon that the existing similar methods will cause the expected attitude of the satellite to be greatly reversed in a short period of time

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  • Steady Sun Orientation Method for Satellites Constrained by Ground Pointing Bias
  • Steady Sun Orientation Method for Satellites Constrained by Ground Pointing Bias
  • Steady Sun Orientation Method for Satellites Constrained by Ground Pointing Bias

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Embodiment Construction

[0040]Next, the technical solutions in the embodiments of the present invention will be described in connection with the accompanying drawings in which the embodiments of the present invention will be described in connection with the drawings of the present invention. Based on the embodiments in the present invention, those of ordinary skill in the art will belong to the scope of the present invention in the scope of the present invention without any other embodiments obtained without creative labor.

[0041]It should be noted that all scales, vector, and coordinate system names, such as the Euler angle α, the eu-axis e, the inertial coordinate system I, etc., and the present invention is implemented. In the case, select the selection of certain variables and spatial orientation, such as 90 ° in the constraint angle.bSet to the desired to the daily shaft, etc., cannot be understood as an indication or implies its design tendency. For the sake of clarity, the physical meanings of the sy...

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Abstract

The invention discloses a satellite's stable sun-orientation method constrained by the ground pointing deviation, and belongs to the technical field of spacecraft attitude control. The described steady-to-day orientation method establishes the desired attitude of the satellite in two steps: first establishes the intermediate attitude of the satellite based on the direction of the satellite-to-center line, the normal direction of the satellite orbital plane, and the forward direction of the satellite; The pulling axis is rotated by a certain angle to reduce the satellite's pointing deviation towards the sun, and ensure that the angle between the expected axis of the earth and the direction of the center of the earth is not greater than the constraint angle. The expected attitude of the satellite obtained according to the strategy can maintain a stable change, avoiding the strange phenomenon that the expected attitude of the satellite changes drastically in a short period of time when the sun-earth-satellite is collinear caused by the traditional strategy, thereby greatly reducing the process of satellite orientation to the sun. peak energy consumption in .

Description

Technical field[0001]The present invention belongs to the field of spacecraft attitude control technology, and in particular to a satellite, a satellite that is constrained by a constrained to the daily direction.Background technique[0002]For the day orientation is one of the mainly used attitude control task modes, it makes the satellite solar cell plane to provide sufficient energy by setting the desired posture of the satellite, and provides sufficient energy, while setting appropriate constraints to meet the satellite other components. , Equipment or load demand for satellite attitude. Among them, the daily orientation mode is a more common satellite to Japan orientation mode, which can meet the satellite's day-oriented charging requirements, but also guarantee an antenna, camera and other important components to point to the ground. Or the working conditions of the surface.[0003]However, the traditional to the day-oriented method is required to point to the deviation, and the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64G1/24
CPCB64G1/24B64G1/245
Inventor 张斌斌季浩然
Owner NAT UNIV OF DEFENSE TECH
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