冗余CAN总线在机载机电管理系统中的应用

Application of Redundant CAN Bus in Airborne Electro-mechanical Management System

随着计算技术和总线技术的高速发展,使机电航空电子设备系统综合不但成为可能而且也成为趋势,CAN总线作为成熟的现场总线,通过工艺和技术改进,已在船舶和航天等领域下得到了较为广泛可靠的应用。文章针对机电综合管理系统的设计需求,提出了一种基于冗余CAN总线的通信方法,并运用裁剪过的CANaerospace高层协议实现了机电系统余度管理和通讯方法。通过低成本的冗余CAN总线通讯技术,不但有效解决了总线通信的故障问题并提高了通信的可靠性,而且降低了系统的开发成本。

With the rapid development of computing technology and bus technology, the integration of electro- mechanical avionics system becomes possible and becomes a trend. As a mature field bus, CAN bus has been widely used in ship industry, aerospace and other fields through improvement in process and technology. In view of the design requirements of the electro-mechanical integrated management system, this dissertation talks about the communication method based on redundant CAN bus, which uses the cropped CANaerospace high-layer protocols to realize the redundancy management and communication of electro-mechanical systems. This low-cost redundant CAN bus communication technology not only effectively solves the problem of the bus communication failure, but also improves the reliability of the communication and reduces the system development costs.