基于桥接模式的双网络重复使用运载器控制系统冗余技术

The Redundant Technology Based on Bridge-Control-Double-Networks for Reusable Launch Vehicle Control System

根据重复使用运载器因面临恶劣电磁环境而对控制系统提出的可重用、高可靠性要求,提出了一种基于桥接控制器的四余度1773A光纤总线双网络冗余控制系统方案。该方案在实时性、数据处理、缓解信息拥塞、电磁兼容性等方面具有较好的优势,控制系统实现了集控制、传感、通信、网络、故障诊断与容错处理于一体的功能。通过对计算机、综合控制器、伺服机构等关键部组件及系统级总线进行冗余设计,提高了系统的可靠性。

According to the reusable and reliable requirements for the reusable launch vehicle flying in the wicked electromagnetism condition, a scheme, based on the redundant technology of current plane and launch vehicle, is proposed in this paper. The two local networks are included in the scheme, which can communicate each other by one bridge CPU. The communication media is four-backup 1773A fiber-optic bus, which has many virtues such as excellent ant-jamming, high communication throughput and simple structure. The bridge-connection based on networks enables the control system has the abilities such as con- trol, sense, communication~ networks, fault detection and management. Furthermore, the redundant technologies are adopted in the key modules of the control system. The core-computer, colligation controller, servo mechanism and data bus makes up of the control system with adequate fault tolerance. The control system is realized with reasonable cost and high reliability.