光纤定位单元数据模型的设计

天文观测越来越多地采用光纤传输星象数据,而大数量的光纤定位问题也就成为研究的难点.对光纤定位单元的性能实验和自动控制都要求将单元的相关信息存储于计算机,而且系统间光纤定位单元信息的相互传递也需要统一约定的接口.在分析光纤控制单元的机械结构、控制方法的基础上,以极坐标运动单元为模型使用特征造型的方法建立了光纤定位单元的数据模型.实践证明,这种数据模型可用于多种光纤定位单元数据的存储、转换、传递和计算.

Design on the Data Model for Fiber Positioning Unit

The fiber positioning problem of the large quantity becomes the difficult point of research, for it adopts fiber to transmit data of star in astronomical observation. That storing the information of fiber positioning unit in the computer is the base not only for unit's examination and controlling, but also for the data interface of all system transportation. On the base of analyzing the mechanical structure and controlling, the data model is designed according to radial coordinates unit by feature modeling in this paper. The result shows that the data model can be used to describe types of fiber positioning unit. And it also can be the base of storage, conversion, transfer and calculation.