Relative posture dynamics modeling method based on dead satellite surface reference points
A technology of relative pose and dynamic model, applied in the direction of integrated navigator, etc., can solve problems that cannot be handled, do not really consider non-cooperative target satellites, and cannot be applied to ultra-close-range inspections, etc., and achieve a simple and effective modeling method Effect
Inactive Publication Date: 2015-01-14
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In the relative position and attitude dynamic modeling methods that have been studied so far, the characteristics of the non-cooperative target satellite itself are not really considered. relationship, such modeling can only be applied to long-range and close-range inspections, but not to ultra-close-range inspections. The particularity of ultra-close-range inspections is reflected in the strong coupling between attitude and orbit. When the object cannot be treated as a point mass model, it must be treated as a distributed mass model
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0028] The method steps of the present invention will be described in detail below.
[0029] Step 1: Determine the region of interest on the surface of the dead satellite.
[0030] Most satellites will roll freely in space after the control system fails, and finally slowly rotate around the main axis of inertia, and the direction of its moment of momentum remains basically inertial in space. Use the observation camera on the tracking star to take in-orbit photos of the failed satellite, and determine an area of interest on the surface of the failed satellite through image processing.
[0031] Step 2: Establish a coordinate system that facilitates the derivation of the relative pose dynamic model.
[0032] It is assumed that the failed satellite finally rotates around the inertial axis X at an angular velocity ω under the action of factors such as solar panel flexural vibration and space perturbation, and keeps the inertia stable. Without loss of generality, assume that the ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a relative posture dynamics modeling method based on dead satellite surface reference points, belonging to the technical field of aerospace navigation modeling. The relative posture dynamics modeling method comprises the following steps of: firstly carrying out on-orbit photographing on a dead satellite by using an observing camera on a track satellite, determining an interesting region on the surface of the dead satellite, building a reference coordinate system and an interesting coordinate system which are convenient for deriving a relative posture dynamics model, and finally building a relative posture coupling dynamics model relative to the surface of the dead satellite on a basis of an Hill equation, a posture dynamics model, the reference coordinate system and the interesting coordinate system according to the motion rule of the dead satellite and the relationship between the track satellite and the interesting region on the dead satellite. According to the relative posture dynamics modeling method disclosed by the invention, the characteristics of non-cooperative dead satellites are sufficiently combined, so that a relative posture dynamics modeling object is reasonably selected, therefore the on-orbit operations, such as rendezvous and docking and capturing, of dead satellites, are favorable to realize.
Description
technical field [0001] The invention relates to a modeling method, in particular to a relative pose coupling dynamic modeling method for non-cooperative failure satellite on-orbit operation, and belongs to the technical field of aerospace navigation modeling. Background technique [0002] In recent years, with the continuous development of space target approach and capture technology, countries are working on various autonomous approach and on-orbit capture projects. Since the approach and capture technology of space cooperation targets is relatively mature, countries will gradually shift their focus to non-cooperative target satellite approach and capture research. A non-cooperative space target is a spacecraft that is not pre-installed with docking auxiliary devices, or even cannot control its attitude, and rolls freely in space. Due to problems such as fuel exhaustion and system failure, the satellite may become a failed satellite. Generally speaking, most of these faile...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/24
Inventor 姚小松熊智郁丰刘伟霞王融刘建业张旭张承彭惠方峥吴旋邵慧
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS