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Stratospheric satellite planar path tracking control method based on vector field guidance

A technology of path tracking and control methods, applied in non-electric variable control, vehicle position/route/altitude control, adaptive control, etc.

Active Publication Date: 2014-12-10
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the cruise flight of stratospheric satellites, most of them are transplanted from low-altitude airship control methods at present, and there is no mature method for the stratospheric satellite's own model, physical environment and cruise requirements

Method used

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  • Stratospheric satellite planar path tracking control method based on vector field guidance
  • Stratospheric satellite planar path tracking control method based on vector field guidance
  • Stratospheric satellite planar path tracking control method based on vector field guidance

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Embodiment Construction

[0071] Below in conjunction with accompanying drawing, each part design method in the present invention is further described:

[0072] "A Stratospheric Satellite Plane Path Tracking Control Method Based on Vector Field Guidance" of the present invention, see figure 1 As shown, the specific steps are as follows: Step 1: Given the expected tracking value

[0073] 1) if figure 2 As shown, the hull coordinate system Oxyz is established with the buoyancy center of the stratospheric satellite as the origin; the inertial coordinate system O is established with any point on the ground as the origin g x g the y g z g , where the origin O g is any point on the ground, O g x g pointing north, O g the y g Pointing East, O g z g point to the center of the earth.

[0074] 2) Given the expected plane path, including straight lines and arcs. Among them, such as image 3 As shown, the straight path consists of the straight line and the north axis O g x g The included angle ξ i...

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Abstract

A stratospheric satellite planar path tracking control method based on vector field guidance includes the steps of 1, giving an expected tracking value, giving an expected planar path, giving an expected speed and calculating resistance resultant Ff borne at the expected speed; 2, performing navigation calculation, to be specific, calculating an expected yaw angle Psi<d> required by elimination of an error between an expected position and an actual position; 3, calculating a path tracking yaw angle error, to be specific, calculating an error between the expected yaw angle and an actual yaw angle; 4, performing sliding mode controller calculation, to be specific, calculating a control quantity u required for the elimination of the error between the expected yaw angle and the actual yaw angle; and 5, calculating a control signal of each actuator, to be specific, calculating an actuator control quantity T, Nu required for implementation of the sliding mode control quantity u. The control process is described in attached figures.

Description

technical field [0001] The invention provides a method for tracking and controlling the plane path of stratospheric satellites based on vector field guidance, which provides a new control method for tracking parameterized plane paths for stratospheric satellites, and belongs to the technical field of automatic control. Background technique [0002] The stratospheric satellite is a new type of low-cost, low-energy-consumption stratospheric vehicle. The control object of this method is a stratospheric satellite using a tandem vector propulsion device, such as figure 1 shown. Stratospheric satellites using vector propulsion are a type of nonlinear mechanical system, and their typical flight states include takeoff, cruise flight, orbit change, and landing. For the cruise flight of stratospheric satellites, most of them are transplanted from low-altitude airship control methods at present, and there is no mature method for the stratospheric satellite's own model, physical envir...

Claims

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Application Information

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IPC IPC(8): G05B13/04G05D1/00
Inventor 郑泽伟陈天闫柯瑜余帅先刘丽莎
Owner BEIHANG UNIV
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