基于TD-LTE技术的城轨机电设备故障信号分离方法  

TD-LTE-based Method for Separating Fault Signals of Urban Rail Electromechanical Equipment

作　　者：耿子康 GENG Zikang(School of Transportation and Safety,Jiangsu College of Safety Technology,Xuzhou,Jiangsu 221000)

机构地区：[1]江苏安全技术职业学院交通与安全学院,江苏徐州221000

出　　处：《绵阳师范学院学报》2023年第8期42-47,57,共7页Journal of Mianyang Teachers＇ College

摘　　要：对故障信号进行分离可以提升城轨机电设备稳定性,为提高城轨机电设备故障信号分离效率,提出了基于TD-LTE技术的城轨机电设备故障信号分离方法.根据非线性函数将设备低维故障信号特征映射到高维空间,引入惩罚函数,对机电设备故障信号进行分类,结合拉格朗日因子算法,提取城轨机电设备故障特征.根据城轨机电设备结构,分析了机电设备受力情况,分析列车受力的传递过程,构建城轨机电设备动力学模型.利用TD-LTE技术采集网络无线接口有关的数据,通过线性瞬时混合,输出机电设备故障观测信号,结合经验模式分解,实现城轨机电设备故障信号的分离.实验结果表明,本方法能够分离出城轨机电设备故障信号,并将误码率和精度分别控制在10%以内和85%以上,大大提高了故障信号的分离效果.Fault signal separation can improve the stability of urban rail mechanical and electrical equipment.In order to improve the fault signal separation efficiency of urban rail mechanical and electrical equipment,this paper proposes a fault signal separation method of urban rail mechanical and electrical equipment based on TD-LTE technology.According to the nonlinear function,the low-dimensional fault signal characteristics of equipment are mapped to the high-dimensional space,and the penalty function is introduced to classify the fault signals of mechanical and electrical equipment.Combined with Lagrange factor algorithm,fault features of urban rail mechanical and electrical equipment are extracted.According to the structure of urban rail mechanical and electrical equipment,the mechanical and electrical equipment stress situation is analyzed,the train stress transfer process is analyzed,and the dynamic model of urban rail mechanical and electrical equipment is constructed.TD-LTE technology is used to collect the data related to the wireless interface of the network,and the fault observation signals of mechanical and electrical equipment are output by linear instantaneous mixing.Combined with empirical mode decomposition,the fault signals of urban rail mechanical and electrical equipment are separated.The experimental results show that the proposed method can separate the fault signals of urban rail mechanical and electrical equipment,and the bit error rate and accuracy are controlled within 10%and above 85%respectively,which greatly improves the fault signal separation effect.

关 键 词：TD-LTE技术 故障信号 机电设备 城市轨道交通 信号分离 特征提取 

分 类 号：TH163[机械工程—机械制造及自动化]