摘要
现存的大部分空间杆状伸展机构采用杆套杆式结构,其直径逐级递减,使得杆伸出长度受到限制,成形后的结构刚度不足,伸展收缩不可控,为此文中提出了一种伸缩可控的杆状空间伸展机构。该系统伸出杆采用螺旋管柱结构,杆伸展、收缩可控,杆的直径和刚度在伸展、收缩过程中不变。能带比较大的负载。控制伸出杆成形的机械系统结构简单、紧凑。以DSPTM320LF2407A为核心的BLDC数字控制系统实时性好,定位精度高。可用于低轨道卫星的重力梯度定位、展开天线及伸出臂,也可作为其它伸展机构的驱动臂来使用。
To solve the length and stiffness limit of nowadays Space-Deployable-Mast because of its one cover another frame. A new frame was proposed based on spiral structure. By use this type of frame, the deploy-retract progress of mast is controllable. And when deploying, the diameter of this mast don＇t change, so the stiffness of mast is steady. The structure of this mechanical system is compact for the space use. The digital system is based on DSP-2407 which lets this system have a high location precision and high time response. Because of those characteristic, it can be used in Gravity Gradient Pole,deployable antenna and so on.
出处
《机械工程师》
2007年第1期33-35,共3页
Mechanical Engineer
关键词
空间杆状伸展机构
伸缩可控
螺旋管柱
重力梯度杆
space-deployable-mast
deploy-retract controllable
spiral tube
Gravity Gradient Pole
