Graph theory-based comprehensive configuration method for spatial prismatic expandable unit mechanism folded into straight line
A comprehensive method and a straight-line technology, applied in the field of a comprehensive method of a deployable unit mechanism configuration, can solve problems such as low efficiency and omission, and achieve the effects of good deployment performance, improved efficiency and accuracy, and high reliability.
Active Publication Date: 2017-09-05
HARBIN INST OF TECH
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[0004] The present invention provides a graph theory-based synthesis method for the configuration of a spatial prism-type expandable unit mechanism that can be folded into a straight line. The method can systematically, comprehensively and effectively solve the spatial prism-type expandable unit mechanism that can constitute a space-expandable mechanism. The problem of synthesis can realize the automation of configuration synthesis to solve the problem of low efficiency and prone to omissions in the synthesis of manual mechanisms
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[0141] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:
[0142] see Figure 1-Figure 34 Explain, a graph theory-based synthesis method for the configuration of a space prism-type expandable unit mechanism that can be folded into a straight line, which is carried out through the following steps:
[0143] 1) According to the stability judgment criterion of the hinged truss system, the statically indeterminate truss structure and adjacency matrix of the spatial prism-type deployable unit mechanism are established;
[0144] 2) Using the embryonic diagram insertion method, taking the statically determinate truss map as the embryonic diagram, inserting a certain number of second-degree points at appropriate positions, converting some fixed-length rods into variable-length rods, and then converting the statically determinate truss The structure is transformed into a space expandab...
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The invention discloses a graph theory-based comprehensive configuration method for a spatial prismatic expandable unit mechanism folded into a straight line, relates to a comprehensive expandable unit mechanism configuration method, and aims to solve the problems that an artificial mechanism is low in comprehensive efficiency and leakage is easily caused. The comprehensive configuration method comprises the following steps: 1) according to stability judging criterions of a hinged truss system, establishing a static truss structure and an adjacently connected matrix of a spatial prismatic expandable unit mechanism; 2) by using an embryonic graph interpolation point method, and static truss spectrum as an embryonic graph, interpolating a certain number of second-degree points in appropriate positions, and converting a static truss structure into the spatial prismatic expandable unit mechanism; and 3) performing isomorphism judgment on the comprehensive spatial prismatic expandable unit mechanism, and rejecting coincident configurations, thereby obtaining a non-coincident spatial prismatic expandable unit mechanism. The method can be applied to comprehensive configuration design of spatial prismatic expandable unit mechanisms which are used for assembling spatial expandable mechanisms such as parabolic antennas and can be folded into straight lines.
Description
technical field [0001] The invention relates to a method for synthesizing the configuration of a deployable unit mechanism, in particular to a method for synthesizing the configuration of a space prism-type deployable unit that can be folded into a straight line based on graph theory, which can be used for assembling satellite parabolic antennas and space planar antenna supports The comprehensive design of the configuration of the spatial prismatic mechanism unit that can be folded into a straight line required by the space expandable mechanism such as the back frame, the double-layer ring truss type expandable antenna, and the solar cell array support frame belongs to the technology of the structure configuration of the expandable unit field. Background technique [0002] With the increasingly complex functions of spacecraft, the demand for the caliber and area of the spacecraft has increased significantly. For complex and large spacecraft such as the International Space ...
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IPC IPC(8): G06F17/50
CPCG06F30/17
Inventor 郭宏伟史创邓宗全李萌刘荣强
Owner HARBIN INST OF TECH
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