基于TTEthernet的综合电子系统通信网络研究

星上总线技术是综合电子系统的关键技术之一,决定了星上电子设备的功能划分及整星信息系统的可靠性设计。选择时间触发以太网(Time-Triggered Ethernet,TTEthernet)作为综合电子系统的核心总线,从网络通信机制、时间同步计算和容错性能等方面分析了TTEthernet的特性及其星载应用的优势,并在此基础上构建基于TTEthernet的综合电子系统通信网络,提出了该通信网络在拓扑结构、系统同步过程和通信协议等方面的具体实现方法,对TTEthernet在卫星中的应用进行了探索,可为TTEthernet在航天领域的研究与应用提供借鉴。

Research of Integrated Avionics Communication Network Based on TTEthernet

The bus chosen for satellite, which determines the function division of electronic equip- ment and the design of satellite information system, is one of the key technologies in integrated a- vionics. This paper choses TTEthernet as core bus for integrated avionics, and studies the advan tages in satellite application and the characteristics of TTEthernet in the view of the mechanism of network communication, time synchronization calculation and fault-tolerant performance. And further, an integrated avionics communication network based on TTEthernet is designed, putting forward the realization of communication network through the structure of equipment, system synchronization process and communication frame format. The results of the paper can not only show the TTEthernet exploration in satellite application, hut also provide a guideline for TTEth- ernet research in the field of space application.