三余度飞行控制计算机余度管理算法研究

Research on redundancy management algorithm of triple redundancy flight control computer

为了提高飞行控制系统的稳定性和可靠性,针对工程的实际需求和三余度飞行控制计算机的架构和特点,设计一种同步算法和余度管理策略,提出一种基于三余度技术的系统设计方案。采用开机同步和周期同步相结合的同步算法使飞行控制系统实现三机同步,采用大数表决法和门限比较法相结合的表决算法对飞行控制系统输出的离散量和数字量进行监控和表决。为进一步增强系统的抗干扰能力,进行系统重构设计,保证飞控系统的稳定性和可靠性。最后通过仿真和模拟测试对所设计的余度管理策略进行验证,结果表明该策略合理可行,不仅可以较好地完成余度管理任务,而且具有一定的抗干扰能力,能够提高飞行控制系统的稳定性和可靠性。

In order to improve the stability and reliability of the flight control system,the synchronization algorithm and redundancy management strategy are designed according to the actual needs of the project and the architecture and characteristics of the triple redundancy flight control computer,and a system design scheme based on the triple redundancy technology is proposed.The synchronization algorithm that combines power on synchronization and periodic synchronization simultaneous is used to achieve three-machine synchronization in the flight control system.The voting algorithm combining the majority voting method and threshold comparison method is used to monitor and vote the discrete and digital quantities output by the flight control system.In order to further enhance the anti-interference ability of the system,the design of system reconfiguration is conducted to ensure the stability and reliability of the flight control system.The designed redundancy management strategy was verified by means of the simulation and testing,and the results show that the strategy is reasonable and feasible.It not only can effectively complete the redundancy management task,but also has a certain anti-interference ability,which can improve the stability and reliability of the flight control system.