Cable section tension variance optimization-based design method for cable net structure of deployable satellite-borne antenna

Abstract

The invention discloses a cable section tension variance optimization-based design method for a cable net structure of a deployable satellite-borne antenna. The cable net structure of the deployable satellite-borne antenna consists of a front cable net surface, a back cable net surface and a longitudinal pull cable; when the cable net structure is designed, all cable net surface nodes fall on a paraboloid through a force density iterative method; meanwhile, boundary nodes of the front and back cable net surfaces are subjected to boundary cable section and annular truss reconnection by taking a regular hexagon in the cable net structure as an effective reflective surface, and serve as basic mesh configuration of the cable net structure of the deployable satellite-borne antenna; and then, by taking cable section tension of the front and back cable net surfaces and tension of the longitudinal pull cable as design variables, taking a cable section tension variance of the front and back cable net surfaces as a target function and taking boundary node fixation as a constraint condition, the cable net structure of the deployable satellite-borne antenna is designed. According to the method, excellent structure layout of the deployable satellite-borne antenna is realized, so that the stability and reliability of the deployable satellite-borne antenna can be remarkably improved.

Description

technical field [0001] The invention relates to a design method for a space-borne deployable parabolic antenna structure, in particular to a pre-tension design for a wire mesh structure of a deployable parabolic dish antenna, which is applied to the structural design of a large-diameter space-borne parabolic dish antenna, specifically a method based on cable segment tension variance optimization The structure design method of deployable space-borne antenna cable network. Background technique [0002] With the increasing frequency of space activities, deployable parabolic spaceborne antennas are more popular and have been widely used in navigation, communication, detection and other fields. The space-borne parabolic antenna of the ring truss is mainly divided into five parts: the front cable mesh surface, the rear cable mesh surface, the longitudinal cable, the metal reflection mesh, and the ring truss. A metal reflection net is attached to the back of the front cable mesh t...

AI Technical Summary

Problems solved by technology

MorTerolle proposed a cable-net structure in his paper "Numerical form-finding of geoTensoid Tension Truss for mesh reflectTor" in 2012. The designed cable-net structure realizes the equal-tension design of the internal cable segments, but the boundary cable segments connected to the truss, The maximum tension ratio of the cable segment is too large, and the tension is not uniform

Images