Under-actuated spacecraft hover asymptotic control method for lacking of trace control

A control method and underactuated technology, applied in attitude control, aerospace vehicles, aircraft and other directions, which can solve the problems of different orbit attributes and different controller designs.

Active Publication Date: 2016-07-06
NAT UNIV OF DEFENSE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although formation flying and hovering belong to the category of relative motion of spacecraft, their orbital properties are different, so the corresponding controller designs are different.

Method used

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  • Under-actuated spacecraft hover asymptotic control method for lacking of trace control
  • Under-actuated spacecraft hover asymptotic control method for lacking of trace control
  • Under-actuated spacecraft hover asymptotic control method for lacking of trace control

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[0117] specific implementation plan

[0118] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them.

[0119] Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0120] Below in conjunction with accompanying drawing, the design method in the present invention is further described:

[0121] The present invention "a hovering asymptotic control method for an underactuated spacecraft lacking trajectory control", its specific steps are as follows:

[012...

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Abstract

The invention provides an under-actuated spacecraft hover sliding mode control method suitable for lacking of trace control. A kinetic model is established by aiming at the problem of under-actuated spacecraft hover control. System controllability under the under-actuated condition of lacking of trace control acceleration is analyzed based on the kinetic model, and a hover direction feasible set under the condition is given. The model acts as a controlled object, and a closed-loop control law under the trace under-actuated condition is designed by adopting the sliding mode control method. The under-actuated controller can drive a tracking spacecraft to be asymptotically stabilized to the given feasible hover direction, and the closed-loop system has great robustness and dynamic performance of external perturbation and model error so that the problem of under-actuated spacecraft hover control for lacking of trace control can be solved.

Description

technical field [0001] The present invention relates to a flight control method of a spacecraft, and more specifically relates to an asymptotically stable control method for hovering of an underactuated spacecraft lacking track direction control. Background technique [0002] The hovering of a spacecraft refers to keeping its relative position relative to a certain target spacecraft in space unchanged by exerting a continuous control force on the tracking spacecraft. Hovering technology has broad application prospects in space missions. For example, hovering over asteroids can provide effective high-resolution scientific observations. In addition, the hovering of the earth orbiting spacecraft keeps the tracking spacecraft relatively stationary to the target spacecraft, which is conducive to close-range operations such as space maintenance and space observation, and reduces the difficulty and risk of space mission operations. The existing hovering control methods of spacecra...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/08B64G1/24
CPCG05D1/08B64G1/24B64G1/245
Inventor 黄煦闫野周洋杨跃能
Owner NAT UNIV OF DEFENSE TECH
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