三余度飞行控制计算机系统重构与恢复研究

Triplex-Redundancy Flight Control Computer System:Reconstruction and Recovery

针对提高分布式架构三余度飞行控制计算机的可靠性问题,进行了系统重构与恢复的研究。从飞行控制计算机、传感器、执行机构3个方面对三余度飞行控制计算机系统的余度资源配置进行了介绍;根据飞行控制计算机具有三余度控制单元的特点,重点研究了控制单元的重构策略,并简要讨论了传感器、气动舵面、接口单元和总线的重构策略;对控制单元的故障恢复进行了研究,设计了故障恢复的算法,选取了恢复所需的关键数据,制定了相应的恢复协议;在无人机仿真平台下进行了测试验证,结果表明该系统重构策略与故障恢复算法合理有效,能够有效地提高三余度飞行控制计算机的可靠性。

This paper proposes a reconstruction and recovery strategy in order to improve the reliability of the triplex-redundancy flight control computer with a distributed architecture. Firstly, the redundant resource allocation of the triplex-redundancy flight control computer system is introduced from three aspects of the flight control computer, the sensor and the actuator. Secondly, the reconfiguration strategy of the control unit is studied based on the characteristics of the flight control computer with triple-redundancy control units. Meanwhile, the reeonfiguration strategies of sensors, pneumatic rudders, interface units and buses are discussed briefly. The fault recovery of the control unit is also studied. The algorithm of fault recovery is designed, the data critical for recovery is selected, and the corresponding recovery protocol is formulated. Finally, a test is carried out on the UAV simulation platform. The results illustrate that the reconstruction and recovery strategy is not only reasonable and effective, but also can increase the reliability of the triplex- redundancy flight control computer.