摘要
为确保飞机具有良好的故障检测和故障隔离能力,提高飞机机电系统的可靠性和维修性,开展机电系统故障诊断方法研究。通过FMECA分析建立典型机电系统测试性模型,结合测试性模型和飞机安全性要求,建立以故障模式检测率高、诊断准确度高、测试点缺陷率低为目标的整数规划模型,并通过整数规划求解器CPLEX验证了模型正确性。以模型为基础,设计了基于邻域改进的启发式算法对模型近优求解,以及分支定界算法进行最优求解,实现对故障项快速检测、非故障项精准隔离。通过结果对比,证明了分支定界算法在机电系统故障诊断问题中的有效性。通用化求解算法适用于相似场景的大规模、高耦合的问题求解。
In order to ensure that the aircraft has good fault detection and isolation capability and improve the reliability and maintainability of the aircraft electromechanical system,this paper studies the fault diagnosis method of electromechanical system.Based on the analysis of FMECA and the testability modeling of typical electromechanical system,combined with the testability model and the safety requirement of aircraft,an integer programming model with high fault mode detection rate,high diagnostic accuracy and low defect rate of test point is established and verified by integer programming solver CPLEX.Based on the model,a heuristic algorithm based on neighborhood improvement is designed to solve the near-optimal model and the branch and bound algorithm to solve the optimal solution.By comparing the results,it is proved that the branch and bound algorithm is effective in the fault diagnosis of electromechanical system.The generalized algorithm is suitable for solving large scale and high coupling problems in similar scenarios.
作者
邵震
陈蒙
张波
花璐
SHAO Zhen;CHEN Meng;ZHANG Bo;HUA Lu(Shenyang Aircraft Design&Research Institute,Shenyang 110035,China)
出处
《飞机设计》
2024年第4期34-39,共6页
Aircraft Design
关键词
分支定界算法
故障诊断
测试性建模
相关性矩阵
深度优先搜索
branch and bound aligorithm
fault diagnosis
testability modeling
correlation matrix
depth first search
