混合三余度无人机飞控计算机硬件结构设计及可靠性分析

Mixed three Redundant FCC of UAV Hardware Structure Design and Reliability Analysis

摘要:

飞控计算机是整个无人机飞控系统的核心部件,其可靠性直接影响着无人机的飞行安全;为了提高飞控计算机的稳定性和可靠性,结合工程实践,提出了一种混合三余度无人机飞控计算机硬件结构设计方案,概括描述了各组成部分的工作原理,并采用马尔科夫模型对该方案进行了可靠性分析;数据结果表明,混合三余度无人机飞控计算机较单机可靠性有了明显提高,满足无人机飞控计算机的可靠性要求,可作为高可靠性长航时无人机飞控计算机设计的参考方案。

Abstract:

The flight control computer(FCC)is the core unit of the UAV flight control system, its reliability directly affects the safety of the UAV. In order to improve the stability and reliability of the flight control computer, In combination with engineering practice, an overall framework of mixed three redundant computer hardware was designed, the working principle of each component was described. Using Markov model to analysis the reliability, the results show that the reliability of the mixed three redundant FCC improved obviously than the single machine, meets the reliability requirements of the UAV flight control computer, can be used as a reference scheme for the high reliability and long endurance UAV flight control computer design.