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Two-body star space tethered formation system configuration retention coordination control method

A technology of space tethering and coordinated control, which is applied in the directions of adaptive control, general control system, control/regulation system, etc., and can solve problems such as configuration research

Inactive Publication Date: 2014-07-09
NORTHWESTERN POLYTECHNICAL UNIV
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AI Technical Summary

Problems solved by technology

At present, the research related to the two-body star space tether formation focuses on dynamic modeling, and there is no research on the coordination control strategy of configuration maintenance.

Method used

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  • Two-body star space tethered formation system configuration retention coordination control method
  • Two-body star space tethered formation system configuration retention coordination control method
  • Two-body star space tethered formation system configuration retention coordination control method

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Embodiment Construction

[0020] Describe the present invention below in conjunction with specific embodiment:

[0021] The two-body star space tether formation system configuration maintenance coordination control method in this embodiment adopts the following steps:

[0022] Step 1: Establish a linear two-body star space tether formation system configuration-keeping control model:

[0023] first as figure 2 As shown, the nonlinear spin dynamics model of the two-body star space tether formation system is:

[0024]

[0025] in, and is the arm angle, L 1 and L 2 are the lengths of arm 1 and arm 2 respectively, T 1 and T 2 are the tether tensions of jib 1 and jib 2 respectively, F t1 and F t2 are the autonomous power of sub-spacecraft 1 and sub-spacecraft 2 respectively, m 1 and m 2 are the mass of sub-spacecraft 1 and sub-spacecraft 2 respectively, r 0 I is the spin radius of the main spacecraft, I is the moment of inertia of the main spacecraft, and M is the spin torque of the main sp...

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Abstract

The invention provides a two-body star space tethered formation system configuration retention coordination control method. Firstly, the two-body star space tethered formation system configuration retention coordination control method is built; tethered pull force of two rotary arms and spinning torque of a main spacecraft serve as control output quantity, and a configuration retention controller is designed; an error threshold value coefficient initial value is set, and the configuration retention controller is adopted to control rotary arm errors and spinning speed errors produced in a spinning process of a two-body star space tethered formation system. In actual application, different control effects can be obtained by regulating error threshold value coefficients, so that requirements for fuel consumption and control time are met. The two-body star space tethered formation system configuration retention coordination control method provides theoretical support for research of configuration retention control.

Description

technical field [0001] The invention relates to a configuration keeping coordination control method of a two-body star space tether formation system, which can be effectively applied to the configuration keeping control task of the two-body star space tether formation system. Background technique [0002] The two-body star space tether formation system is a new type of space formation system, which consists of a main spacecraft located in the formation center and two space tethers (called spiral arms) distributed around the main spacecraft and connected to it. composed of sub-spacecraft. The space tethers in the formation are generally tens to hundreds of meters, and the main spacecraft has the ability to release, recover and control the connected space tethers). The main spacecraft can generate spin torque through its own thruster and other actuators, thereby prompting the entire formation system to perform spin motion in space at a certain angular velocity, and use the ce...

Claims

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Application Information

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IPC IPC(8): G05D1/10G05B13/04
Inventor 黄攀峰袁建平刘彬彬孟中杰马骏
Owner NORTHWESTERN POLYTECHNICAL UNIV
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