基于Raft算法的飞行控制系统余度管理应用

Application of flight control system redundancy management based on Raft algorithm

飞机飞行控制系统的主要作用是保证飞机的稳定性和操纵性,提高飞机飞行性能和完成任务的能力,增强飞行的安全性和减轻驾驶员的工作负担,因此通常都会采用余度结构实现其容错能力。针对当前分布式余度结构具有复杂度和成本较高的故障检测和处理机制,使用Raft一致性算法实现飞控系统的容错。通过Raft算法在余度通道中达成一致,避免故障检测和处理机制带来的问题。除此之外,针对机载环境存在计算资源和通信资源有限的问题,采用门限签名技术降低Raft算法的计算开销和通信开销。通过实验测试验证算法能够有效应用到飞控系统中解决容错问题,并且门限签名方案可以降低Raft算法的计算开销和通信开销;而且模拟结果有效验证了Raft算法可以应用于飞控系统当中。

The main function of the aircraft flight control system is to ensure the stability and controllability of the aircraft,improve the flight performance and the ability to complete tasks,enhance the flight safety and reduce the workload of the pilot.Therefore,redundancy structure is usually used to achieve its fault tolerance.Aiming at the fault detection and processing mechanism with high complexity and cost in the current distributed redundancy structure,Raft consistency algorithm was used to achieve fault tolerance of the flight control system.The Raft algorithm was used to reach an agreement in the redundancy channel to avoid problems caused by the fault detection and processing mechanism.In addition,in view of the limited computing and communication resources in the airborne environment,threshold signature technology was used to reduce the computing and communication costs of Raft algorithm.Experimental results show that the algorithm can be effectively applied to the flight control system to solve the fault tolerance problem,and the threshold signature scheme can reduce the computational and communication costs of Raft algorithm.The simulation results effectively verify that Raft algorithm can be applied to flight control system.