航空发动机数控系统余度管理方法研究  

Redundancy Management Research Method of Aero-Engine Control System

作　　者：贾盼盼 俞刚 JIA Pan-pan;YU Gang(AECC Aero Engine Control System Institute,Wuxi 214063,China)

机构地区：[1]中国航发控制系统研究所,江苏无锡214063

出　　处：《测控技术》2022年第12期48-52,共5页Measurement & Control Technology

摘　　要：传感器作为测量元件在航空发动机控制系统中具有举足轻重的作用,传感器信号的准确性直接影响到航空发动机控制系统的安全稳定工作。因此,应建立航空发动机控制系统传感器故障检测、隔离和重构系统,从而提高发动机控制系统的可靠性。对航空发动机控制系统的传感器解析余度算法进行了深入研究,提出了平均值表决算法、权重法表决算法、大值表决算法和小值表决算法共4类解析余度算法。其中,平均值表决算法和权重法表决算法最接近真实值,大值表决算法可确保安全,小值表决算法因无法确保安全故应用较少。根据项目实际需要,将这4类算法应用于数控系统余度管理方面,结果表明这4类算法均有效,并在各自领域发挥了重要作用。在MATLAB下的Simulink建立了相关装置的数学模型并进行了数字仿真,所设计的余度管理算法已经应用于实际项目中,对保证发动机的安全性和可靠性具有重要意义。As a measuring unit,sensors play an important role in the aero-engine control system.The accuracy of sensor signals directly affects the safety and stability of the aero-engine control system.Therefore,the sensor fault detection,isolation and reconfiguration system of aero-engine control system should be established to im-prove the reliability of the aero-engine control system.The sensor analytical redundancy algorithm of aero-en-gine control system is deeply studied,and four kinds of analytical redundancy algorithms are proposed,inclu-ding average value voting algorithm,weighting voting algorithm,maximum voting algorithm and minimum voting algorithm.Among them,the average value voting algorithm and the weighting voting algorithm are closest to the true value,maximum voting algorithm can ensure security,and minimum voting algorithm is rarely used be-cause it cannot ensure security.According to the actual needs of the project,these four kinds of algorithms are applied in the redundancy management of aero-engine digital control system.The results show that these four kinds of algorithms are effective and play an important role in their respective fields.The mathematical model of the relevant devices is established in MATLAB Simulink and is carried out digital simulation.The designed redundancy management algorithm has been applied to the actual project,which is of great significance to en-sure the safety and reliability of the aero-engine.

关 键 词：航空发动机 数控系统 解析余度 MATLAB仿真平台 

分 类 号：V233.7[航空宇航科学与技术—航空宇航推进理论与工程]