空间太阳能电站大折展比体展开桁架机构  

Large Folding Ratio 3D Deployable Truss Mechanism For Space Solar Power Station

作　　者：肖洪 成正爱 郭宏伟[3] 周璐 王立 楼云江 刘海婷 刘荣强[3] XIAO Hong;CHENG Zhengai;GUO Hongwei;ZHOU Lu;WANG LI;LOU Yunjiang;LIU Haiting;LIU Rongqiang(Department of Mechanical Engineering and Automation,Harbin Institute of Technology,Shenzhen 518055;Qian Xuesen Laboratory of Space Technology,Beijing 100089;State Key Laboratory of Robotics and System,Harbin Institute of Technology,Harbin 150001)

机构地区：[1]哈尔滨工业大学(深圳)机电工程与自动化学院,深圳518055 [2]钱学森空间技术研究实验室,北京100089 [3]哈尔滨工业大学机器人技术与系统国家重点试验室,哈尔滨150001

出　　处：《机械工程学报》2020年第13期128-137,共10页Journal of Mechanical Engineering

基　　金：航天先进制造技术研究联合基金(U1637207);国家自然科学基金(51575119)资助项目。

摘　　要：发展空间太阳能电站技术具有极其重要的战略意义,受运载火箭运输能力的限制,提出了一种可实现三维体展开的桁架机构作为空间太阳能电站的主结构。通过多方案对比分析,构建了可展桁架基本组成单元,在确定了驱动原理的基础上,进行了可展桁架运动学分析,验证了驱动方案的可行性。基于能量相等原理,建立了桁架连续梁等效模型,分析了运动学特性,并进行了参数优选。最后,研制了缩比原理样机,进行了展开试验、刚度测试试验及动力学试验。结果表明,该可展桁架具有较大的折展比及较轻的质量,铰链间隙是影响系统刚度的关键因素。Development of space solar power station technology has important strategic significance. Limited by the transport capability of launch vehicles, a truss mechanism with three-dimensional volume expansion is proposed. Through comparative analysis of various schemes, the basic components of deployable truss are constructed. On the basis of driving principle, kinematics analysis of deployable truss is carried out, which verified the feasibility of driving scheme. Based on the principle of energy equality, equivalent model of truss continuous beam is established, and a theoretical analysis of kinematic characteristics is made. At last, a prototype of scaling principle has been developed, and the expansion test, stiffness tests and dynamic test were carried out. The results show that the deployable truss has larger folding ratio and lighter weight, and reducing hinge clearance is the key to improve system stiffness.

关 键 词：空间太阳能电站 体展开桁架 大折展比 连续体模型 运动学 动力学 

分 类 号：V414[航空宇航科学与技术—航空宇航推进理论与工程]