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A Decentralized Closed-Loop Autonomous Position Keeping Control Method for Geostationary Orbit Satellites

A technology of stationary orbit and maintaining control, which is applied in the directions of space navigation vehicle guidance devices, space navigation equipment, space navigation equipment, etc., can solve problems such as poor accuracy, achieve good adaptability, improve autonomous operation ability, and is conducive to popularization and application Effect

Active Publication Date: 2021-09-03
BEIJING INST OF CONTROL ENG
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AI Technical Summary

Problems solved by technology

Considering the navigation positioning and control errors, the centralized autonomous position guarantee control accuracy index is generally ±0.2°, which is poor compared with the ground ±0.05° management capability, so it is necessary to further study the satellite autonomous high-precision orbit control method

Method used

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  • A Decentralized Closed-Loop Autonomous Position Keeping Control Method for Geostationary Orbit Satellites
  • A Decentralized Closed-Loop Autonomous Position Keeping Control Method for Geostationary Orbit Satellites
  • A Decentralized Closed-Loop Autonomous Position Keeping Control Method for Geostationary Orbit Satellites

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Embodiment Construction

[0072] Geostationary orbit satellites have position-keeping control boundary index requirements in the longitude and latitude directions, where the longitude boundary is defined as the maximum longitude deviation allowed relative to the fixed-point position, and the latitude boundary is defined as the maximum allowable orbital inclination, such as figure 1 shown. Therefore, the orbit keeping control of geostationary satellites is a general term for a series of orbit correction controls performed by the propulsion system during the entire life of the satellite. outside.

[0073] Geostationary orbit satellite position maintenance control is generally divided into two forms: east-west position maintenance and north-south position maintenance. The purpose of north-south position maintenance control is to use normal thrust to reduce the inclination angle of the satellite so that the geographic latitude of the satellite is within the maintenance boundary; east-west position maintena...

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Abstract

The present invention designs a decentralized closed-loop autonomous position maintenance control method for geostationary orbit satellites, which disperses the traditional centralized position protection control amount to be executed every day, uses pulse thrust to eliminate daily perturbation changes, and further combines the deviation closed-loop feedback control function, Through the joint control of flat longitude, eccentricity and orbital inclination, the satellite position can always be maintained within a precise range. The control accuracy in the east-west direction is better than ±0.05°, and the control accuracy in the north-south direction is better than ±0.01°.

Description

technical field [0001] The invention belongs to the field of autonomous orbit control of spacecraft, and relates to a distributed closed-loop autonomous position keeping control method for geostationary orbit satellites, which is used to realize autonomous high-precision orbit control on the satellite. Background technique [0002] With the continuous expansion of my country's satellite application field and the rapid increase in the number of satellites in orbit, the traditional management mode of relying on the ground measurement and control center for satellite daily management can no longer meet the needs of development, and the intelligent and autonomous operation of satellites must be realized. Autonomous operation means that without relying on the support of the ground station, the satellite completely uses its own software and hardware equipment to independently complete various functions and operations required by the flight mission. The autonomous control of attitud...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64G1/24
CPCB64G1/24B64G1/247
Inventor 常建松刘新彦郭建新谢军韩冬范炜王浩王玉峰
Owner BEIJING INST OF CONTROL ENG
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