Accompanying initialization control method based on relative motion characteristic quantities among space vehicles

A technology of relative motion and control method, applied in the direction of aerospace vehicle guidance devices, etc., can solve the problems of increasing the data processing burden of tracking spacecraft, cumbersome iterative solution calculation or filter estimation processing, etc., to reduce the amount of calculation and simplify the data processing process , to avoid the effect of settlement

CN102991728BInactive Publication Date: 2015-03-04BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2015-03-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for accompanying initialization control according to relative motion characteristic quantities behind near-circular orbit space vehicles. The method comprises an orbit period calculating module, a relative motion characteristic quantity calculating module, an orbit control strategy module and a thruster startup / shutdown control module. The control method is stored in a data processing unit of a tracking space vehicle and controls the tracking space vehicle to change from an approaching state to a long-term and stable accompanying state in the rear region of a target space vehicle by the aid of a relative tracking device, an inertial navigation system (INS) / global positioning system (GPS) combined navigation device and a thruster which are installed on the tracking space vehicle. The control method has the advantages of being concise in data processing process, small in calculation amount and good in control effect.
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Description

Technical field

[0001] The invention relates to an accompanying flight initialization control method based on the relative motion characteristic quantity between spacecraft, which relates to a control method for establishing a long-term and stable accompanying flight state of a tracking spacecraft behind a target spacecraft under the condition of a near-circular orbit, and belongs to aerospace The technical field of short-range relative motion control of devices.

Background technique

[0002] The initial control technology of the accompanying flight of the spacecraft is mainly through orbit control to make the tracking spacecraft change from the state of gradually approaching the target spacecraft to the control method of establishing a long-term and stable accompanying flight state behind the target spacecraft. Accompanied flight initialization control technology of spacecraft is an important control technology in space rendezvous and docking missions, space on-orbit se...

Examples

Embodiment Construction

[0048] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0049] see figure 1 As shown in the schematic diagram of accompanying flight initialization control, the target spacecraft 100 is located in a nearly circular earth orbit with an eccentricity close to 0, and is in a passive motion state. The tracking spacecraft 200 is gradually approaching the target spacecraft 100 along the gradually changing ellipse line (dotted line in the figure) behind the target spacecraft 100, and it is expected to establish a long-term and stable companionship in the rectangular accompanying flight area 300 behind the target spacecraft 100. fly state.

[0050] The accompanying flight initialization control method in the present invention refers to the process of controlling the tracking spacecraft 200 to change from the approaching state to the accompanying flying state. The approaching state of the tracking spacecraft 200 is a stat...