科创中国

原文链接：万方

• 摘要：

  Many attentions for structural synthesis are paid to planar linkages and parallel mechanisms, while design novel pyramid deployable truss structure(PDTS) of satellite SAR mainly depends on experience of designer. To design novel configuration of PDTS, a two-step topology structure synthesis and analysis approach is proposed. Firstly, a conceptual configuration of PDTS is synthesized. Weighted graph and weighted adjacency matrix are established to realize topological description for PDTS. Graph properties are then summarized to distinguish differentia between PDTS and other type structures. According to graph properties, a procedure for synthesis conceptual configuration of PDTS is presented. Secondly, join relationship of components in a PDTS is analyzed. Kinematic chain and corresponding incidence/adjacency matrix are employed to analyze join relationship of PDTS. Properties and simplified rules of kinematic chain are extracted to construct kinematic chain. A procedure for construction kinematic chain of PDTS is then established. Finally, with this two-step approach all 11 rectangular pyramid deployable structures whose folded state is planar are discovered and their kinematic chains are constructed. Based on synthesis results, a novel deployable support structure for satellite SAR is designed. The proposed research can be applied to obtain some novel PDTSs, which is of great importance to design some novel deployable support structures for satellite SAR antenna.

• 关键词：

  structural synthesis deployable truss structure spatial linkage graph theory SAR antenna

• 作者单位：

  State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China

• 基金项目：

  the College Discipline Innovation Wisdom Plan in China(Grant B07018)%National Natural Science Foundation of China(Grant .50935002,11002039)

• 来源期刊：

  中国机械工程学报

• 年，卷(期)：

  201427004