摘要
研究折展单元机构构型综合对于可展开天线机构创新设计具有重要意义。根据三棱锥折展单元机构多运动输出期望公共运动和期望同步运动自由度要求,基于螺旋理论约束综合法,完成机构公共运动和耦合同步运动支链的构型综合,获得了多种基本折展单元构型,并结合应用实际确定一种优选三棱锥折展单元机构。根据3RR-3RRR单元折展机构的组网方式和组网运动的要求,采用螺旋理论进行了运动副的构型设计和优化,综合出一种具有耦合自由度的高刚度三棱锥折展单元组网机构。所采用的构型综合方法实现了螺旋理论约束综合法在折展机构构型综合中的应用,为具有多运动输出部件耦合运动要求的机构综合研究提供参考。综合得到的机构适用于星载构架天线反射器等空间曲面支撑类机构应用需求,具有广泛的应用前景。
The research on deployable/foldable unit mechanism configuration synthesis is great significant for deployable antenna mechanism innovation design. Based on the expected public motion requirement and the expected synchronous motion requirement of the triangular pyramid deployable/foldable unit mechanism, and based on the constraint-synthesis method of the Screw Theory, a series of kinematic chains and several basic deployable/foldable are proposed. Combined with practical application, a kind of triangular pyramid unit is obtained. According to the networking mode and networking motion requirement, configuration design and optimization of networking mechanism are accomplished with 3 RR-3 RRR mechanism, and a kind of triangular pyramid unit-networking deployable/foldable mechanism is achieved. With the study, a configuration synthesis approach of deployable/folder mechanism with multi-motion output members is formed. The proposed synchronized deployable/foldable networking mechanisms are applicable for satellite-borne truss reflectors, which is widely prospect in engineering applications.
作者
朱佳龙
黄志荣
郑士昆
许允斗
段玉柱
马小飞
ZHU Jialong;HUANG Zhirong;ZHENG Shikun;XU Yundou;DUAN Yuzhu;MA Xiaofei(China Academy of Space Technology(Xi’an),Xi’an 710100;School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150001;Dept.Mechanical Engineering,Yanshan University,Qinhuangdao 066004)
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2020年第5期29-38,共10页
Journal of Mechanical Engineering
基金
国家自然科学基金资助项目(11290154,U1537213)。
关键词
螺旋理论
折展机构
构型综合
screw theory
deployable/foldable mechanism
configuration synthesis
