A Method for Calculating the Center of Mass of Satellites Using the Mass and Center of Mass Information of Parts
A technology of information calculation and components, applied in the field of aerospace dynamics, can solve the problems of large weight and size of SAR antennas and solar cell arrays, difficulty in directly measuring SAR antennas and solar cell arrays, and difficulty in accurately calculating the center of mass of satellites in orbit , to achieve the effect of low implementation cost, wide application range and simple method
Active Publication Date: 2017-03-08
SHANGHAI SATELLITE ENG INST
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Due to the large weight and size of the SAR antenna and solar cell array, and due to ground test equipment, test methods, environmental factors, etc., it is difficult to directly measure the centroid of the SAR antenna and solar cell array on the ground
In addition, other unfolded parts on the star can affect the center of mass of the satellite to varying degrees
Combining the above differences between the satellite's in-orbit and ground conditions has led to the problem of accurately calculating the satellite's in-orbit centroid
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
[0040] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0041] In conjunction with the characteristics of the above-mentioned satellite carrying a synthetic aperture radar (SAR) large-scale planar phased array antenna, the present invention provides a method for calculating the satellite centroid using the mass and centroid information of parts, comprising the following steps:
[0042] Step 1. According to the mission requirements, design and determine the satellite configuration and overall satellite layout;
[0043] Step 2, split the satellite into s...
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 provides a method for calculating a satellite barycenter by utilizing mass and barycenter information of a part. The method comprises the following steps that (1) the construction and the overall layout of a satellite are determined, and the satellite is detached into a plurality of components; (2) the mass of each component is measured, and the mass and the barycenter of all parts in each component are measured; (3) mass equations meeting with the mass of all parts in each component are established; (5) according to the mass equations, the mass coordinates of the components are obtained; (6) according to the mass coordinates of the components, the barycenter of the satellite in an on-orbit status is synthesized. According to the method, enough measurable part mass and barycenter information can be utilized when the barycenter of the satellite is calculated, calculation of the barycenter of the satellite is achieved at second-order accuracy, and the method has a wide application range in engineering.
Description
technical field [0001] The invention relates to aerospace dynamics technology, in particular to a method for calculating the center of mass of a satellite by using the mass and center of mass information of components. Background technique [0002] Aiming at the high-precision formation configuration design and control technology, realize the optimal design of distributed interferometric mapping satellite formation under multi-constraint conditions, the cooperative control of formation orbit configuration and other technologies. The satellite's center of mass deviation is a major interference force, which affects The performance level of the formation (see "Acquirement of pure gravity orbit using precisionformation flying technology", 2012 special issue of the journal ActaAstronautica). Accurately calculating the center of mass of the satellite and reducing the interference force are the basis for improving the satellite's on-orbit performance. [0003] In the prior art, th...
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): G01M1/12
Inventor 陈汀陈重华吴远波
Owner SHANGHAI SATELLITE ENG INST