三推杆伺服系统在空间遥感仪器中的应用  

Application of triple linear actuator servo mechanism in space instrument

作　　者：张凯[1] 刘畅[1] 李佳欣 石启龙 ZHANG Kai;LIU Chang;LI Jia-xin;SHI Qi-long(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China)

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033

出　　处：《激光与红外》2025年第1期97-101,共5页Laser & Infrared

摘　　要：空间伺服系统可用于提高有效载荷的使用效率和搭载卫星的寿命。可用于空间观测、空间预警和态势感知等领域,但受到重量、转动范围等因素的限制。本文提出一种由三根电动推杆组成的三推杆伺服系统。每根电动推杆两端均通过球铰链分别与有效载荷和卫星平台连接。通过不同电动推杆的伸长和缩短,实现伺服系统的转动;通过设计电动推杆行程,获得不同的转动范围。本文对三推杆伺服系统的自由度进行了解算;结合实际设计了三推杆伺服系统的60°转动范围;增加了解锁机构,以满足力学性能要求;分析了伺服系统的热适应性,证明可以作为星载接口使用。结果表明三推杆伺服系统可以用于空间环境;具有较大的转动范围,重量更轻;可以进行空间目标搜索和跟踪;可以完成并替代以往需要卫星机动、调姿的任务,节省卫星燃料。Space servo system can be used to increase the efficiency of payload use and the lifetime of on-board satellites and be used in the fields of space observation,space early warning and situation awareness,but it is limited by factors such as weight and rotation range.In this paper,a type of three linear actuator servo mechanisms is proposed.The two ends of the linear actuator are connected with the space instrument and the satellite platform through a ball hinge.The rotation of the servo system is achieved through the extension and shortening of different electric actuators.Different rotation ranges are obtained by changing the travel of linear actuator.The degrees of freedom of the triple-actuator servo system are solved,and the 60°rotation range of the triple-actuator servo system is designed in combination with reality.The unlocking mechanism is added to meet the requirements of the mechanical properties.And the thermal adaptability of the system is analyzed,and it is proved that it can be used as a star-carrying interface.The results show that the three linear actuator servo mechanisms can be used in space environment,and it has a larger rotation range and is lighter in weight.It can carry out space target search and tracking and can complete and replace previous tasks that require satellite maneuvering and attitude adjustment,saving satellite fuel.

关 键 词：伺服机构 电动推杆 态势感知 空间预警 

分 类 号：TH745[机械工程—光学工程] V443.5[机械工程—仪器科学与技术]