一种小型漂浮式天线基座静力学特性研究  

The Research on Static Characteristics of a Novel Small Float Antenna Base

作　　者：曹海青[1] 王渝[1] 方建军[2] 杜明芳[1,2] 

机构地区：[1]北京理工大学自动化学院,北京100081 [2]北京联合大学自动化学院,北京100101

出　　处：《北京理工大学学报》2014年第8期790-795,共6页Transactions of Beijing Institute of Technology

基　　金：北京市学术创新资助项目(201106149)

摘　　要：研究了一种新的小型飘浮式卫星天线基座的静力学特性.根据几何尺寸和受力情况研究其浮态、状态方程和储备浮力;根据重心移动定理、浮心移动定理和等体积倾斜定理研究其浮心、稳心、稳性半径和初稳性高;根据几何旋转不变性,通过数学推理研究其静稳性;根据动力矩的作用过程分析动复原力臂和静复原力臂间的关系,研究其大倾角稳性;利用储备浮力研究其抗沉性.研究结果表明该基座具有较好的浮性、稳性和足够的抗沉能力.The static characteristics of a novel small float antenna base were studied. According to the geometric dimension and force status of the base, the float state, state equation and reserve buoyancy were studied. The buoyant centre, meta centre, meta centre radius and initial stability height were studied according to the weight transfer theorem, buoyant centre transfer theorem, the volumetric inclined theorem and the physical dimension. On the base of rotation invariance the static stability was studied by accuracy mathematical derivation. The relation between the dynamic righting arm and the static righting arm was got to study the large angle stability by analyzing the process of dynamic torque. The sink resistibility was studied by the reserve buoyancy. Results validate that the base has better buoyancy, stability and sink resistibility.

关 键 词：漂浮式基座 浮性 稳性 抗沉性 

分 类 号：O39[理学—工程力学] O351[理学—力学]