| Citation: | DING Jianzhong, WANG Chunjie. Deployment accuracy analysis of planar satellite antenna with joint clearances[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(12): 2625-2631. doi: 10.13700/j.bh.1001-5965.2015.0808(in Chinese)
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Planar folding satellite antenna deployment mechanism is widely used in the field of astronautics. It has a large and complicated topology structure, which is composed by joint-connecting rods. The existence of joint clearances makes the analysis of the antenna deployment a tough task and contributes a lot to pointing error. A matrix modeling approach is proposed to solve such kind of analysis problem. The complex multi-loop structure of a deployable mechanism is divided into locking mechanism and single-loop mechanisms. The accuracy of each mechanism is calculated separately to make the computing easier. Finally, the maximum pointing error of the entire deployable mechanism with a specific structure is calculated to be 0.067° by a particle swarm optimization algorithm, referring to the accuracy analysis results of locking mechanism and single-loop mechanisms. This proposed calculation approach is of high precision and the maximum pointing error of the satellite antenna deployable mechanism can be obtained efficiently by the intelligent optimization algorithm. It provides reference in error compensation design of the deployable mechanism.
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