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首页> 外文期刊>IEEE Aerospace and Electronic Systems Magazine >Channelization: the two-fault tolerant attitude control function for the Space Station Freedom
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Channelization: the two-fault tolerant attitude control function for the Space Station Freedom

机译：信道化：空间站自由的两个容错姿态控制功能

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The Space Station Freedom was, from the mid-1980's through 1993, the design for an international orbiting laboratory facility. The Space Station Freedom was comprised of "utility" systems, such as power generation and distribution, thermal management, and data processing, and "user" systems such as communication and tracking, propulsion, payload support, and guidance, navigation, and control. These systems are required to work together to provide various station functions. To protect the lives onboard and the investment in the station, the systems and their connectivity had to be designed to continue to support critical functions after any single fault for early assembly stages, and after any two faults for later stages. Of these critical functions, attitude control was the most global, incorporating equipment from nearly all major systems. The challenge was to develop an architecture, or integration, of these systems that would achieve the specified level of fault tolerant attitude control and operate, autonomously, for the three-month unmanned periods during the assembly process. Additionally, this architecture had to maintain the desired utility of the station for each stage of the assembly process. This paper discusses the approach developed for integrating the systems such that the fault tolerance requirements were met for all stages of assembly. Some of the key integration issues are examined and the role of analysis tools are described. The resultant design was a highly channelized one, and the reasons and the benefits of this design will be explored. The final design was accepted by the Space Station Control Board as the design baseline in July 1992.
机译：从1980年代中期到1993年，空间站自由是国际轨道实验室设施的设计。自由空间站由“实用”系统（例如发电和配电，热管理和数据处理）和“用户”系统（例如通信和跟踪，推进，有效载荷支持以及制导，导航和控制）组成。这些系统需要一起工作以提供各种工作站功能。为了保护船上人员的生命和对站台的投资，必须对系统及其连接进行设计，以在组装初期出现任何单个故障之后以及在后期出现任何两个故障之后继续支持关键功能。在这些关键功能中，姿态控制是最全球化的，它整合了几乎所有主要系统的设备。挑战是开发这些系统的体系结构或集成，以实现指定级别的容错姿态控制并在组装过程中的三个月无人值守期间自主运行。另外，该结构必须在组装过程的每个阶段都保持工作站的期望效用。本文讨论了为集成系统而开发的方法，以便在组装的所有阶段都满足容错要求。研究了一些关键的集成问题，并描述了分析工具的作用。最终的设计是高度渠道化的设计，将探讨这种设计的原因和好处。最终设计于1992年7月被空间站控制委员会接受为设计基准。

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