Formation reconfiguration control method for radially underactuated spacecraft based on input saturation

A formation reconfiguration and control method technology, applied in the field of radial underactuated spacecraft formation reconfiguration control, can solve problems such as input saturation without consideration

Active Publication Date: 2018-04-03
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0005] The purpose of the present invention is to provide an input saturation-oriented radial underactuated spacecraft formation reconfiguration control method, which solves the input saturation problem that has not been considered in the existing radial underactuated spacecraft formation reconfiguration control methods

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  • Formation reconfiguration control method for radially underactuated spacecraft based on input saturation
  • Formation reconfiguration control method for radially underactuated spacecraft based on input saturation
  • Formation reconfiguration control method for radially underactuated spacecraft based on input saturation

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[0070] The accompanying drawings constituting a part of this application are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention.

[0071] The invention proposes a backstepping control method considering controller saturation. This method aims at the problem of formation reconfiguration control of radially underactuated spacecraft in circular orbit, and establishes its dynamic model. Based on the dynamic model, the system controllability and the feasibility of the formation reconfiguration task in the absence of radial control are analyzed. Taking this dynamic model as the controlled object, an auxiliary system is constructed to solve the problem of spacecraft formation reconfiguration in the case of input saturation, and a closed-loop control law for radial underactuation is constru...

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Abstract

The invention provides an input saturation oriented radial under-actuated spacecraft formation reconfiguration control method. The method establishes a kinetic model for the problem about circular orbit radial under-actuated spacecraft formation reconfiguration control having an input saturation effect. Based on the kinetic model, the system controllability and the formation reconfiguration feasibility under the condition that radial control loses are analyzed. An auxiliary system is constructed by using the model as a controlled object to solve the problem of input saturation, and meanwhile, a closed-loop control law under the radial under-actuated condition is constructed by adopting a back-stepping control method. The method can accomplish circular orbit radial under-actuated spacecraft formation reconfiguration control having input saturation, and the closed-loop system is consistent, finally has bounded stability and has good robustness and dynamic performance on external perturbation and model error.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to an input saturation-oriented radial underactuated spacecraft formation reconfiguration control method. Background technique [0002] Spacecraft formation is a key technology for future space mission applications. Spacecraft formation distributes the different functional components of a traditional single spacecraft to other small spacecraft in the spacecraft formation, so that the spacecraft formation can realize mutual Coordinate and unify to complete the task. Therefore, compared with a single spacecraft, the spacecraft formation has higher mission flexibility and reliability, while reducing costs and risks. The task flexibility of the spacecraft formation is reflected in the fact that it can be transformed into different formation configurations through orbital maneuvering to realize formation reconfiguration to meet the needs of different space missions. Therefore...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D1/10
CPCG05D1/104
Inventor 黄煦闫野周洋杨跃能
Owner NAT UNIV OF DEFENSE TECH
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