Abstract
Firstly, based on the structural characteristics of a new type of hoop truss deployable antenna, this paper derives the motion transformation relation between two hoop modules by using the method of coordinate transformation, and establishes the general model for deployment kinematic analysis, which can be applied to analyze the position, velocity and acceleration of any point on the structure. Secondly, according to the relation between the driving cable and the hoop module, the motion planning of the hoop module is transformed into the motion control of the driving cable, which can realize the deploying position control of the antenna. Finally, numerical simulations show the control method can make the antenna smoothly deploy following the specified deployable motion.
Highlights
In the modern satellite communications, wireless broadcasting systems, earth observation and deep space exploration, large deployable antennas are one of the key equipment [1,2,3]
Compared with other antenna structures, it has the advantages of large flexibility, good space thermal stability, large storage ratio, simple structure, and the increase of the aperture in a certain range does not change the structural form of the antenna, and the quality does not increase proportionally, so it is the ideal structural form for a large deployable antenna at present
The traditional hoop truss deployable antenna restricts its development to super-large-diameter antennas because the storage ratio is difficult to increase
Summary
In the modern satellite communications, wireless broadcasting systems, earth observation and deep space exploration, large deployable antennas are one of the key equipment [1,2,3]. The hoop truss deployable antenna is getting more and more attention due to its superior performance. The traditional hoop truss deployable antenna restricts its development to super-large-diameter antennas because the storage ratio is difficult to increase. Cao, a master student of Xidian University, proposed a new structure about the hoop truss deployable antenna [5], which significantly improved the storage ratio and received great attention. The deploying process is one of the most brittle parts for the deployable antenna. It is necessary to carry out the simulation of the deploying process and the prediction of the performance of the antenna [6, 7].
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