摘要
针对目前机车车辆转向架跑合试验信息化和智能化程度较低,在试验过程中难以快速准确地实现轴承和齿轮箱故障诊断及故障定位的现状,将麦克风阵列技术应用于跑合试验中,可直接通过声信号实现故障诊断与故障定位。针对转向架常见的轴承内外圈故障进行故障模拟试验,对故障轴承产生的声信号进行采集分析,通过特定的数据处理方法得到信号包络谱,实现故障诊断;同时结合基于到达时延的定位算法确定故障轴承位置,实现故障定位。为满足现场需要,设计了1套便于麦克风阵列精确布局与灵活变换的阵列支架,通过模拟试验 验证了所述算法与阵列支架的可靠性和准确性。
In view of the low degree of information and intelligence in running-in test of rolling stock bogies,it was difficult to realize fault diagnosis and fault location of bearings and gearboxes quickly and accurately in the test process.Microphone array technology was applied to running-in test,which could directly realize fault diagnosis and fault location through sound signals.Fault simulation experiments were carried out for the common faults of bogie bearing inner and outer rings.Acoustic signals generated by the faulty bearing were collected and analyzed.Signal envelope spectrum was obtained through specific data processing methods to realize fault diagnosis.At the same time,fault location was realized by combining the location algorithm based on arrival delay.In order to meet the needs of the field,a set of array brackets was designed to facilitate the accurate layout and flexible transformation of microphone arrays.The reliability and accuracy of the algorithm and array brackets were verified by simulation experiments.
作者
马波
于功也
闫戈
MA Bo;YU Gongye;YAN Ge(Beijing Key Laboratory of Health Monitoring and Self-healing of High-end Mechanical Equipment,Beijing University of Chemical Technology,Beijing 100020,China;Key Laboratory of Engine Health Monitoring and Networking Ministry of Education,Beijing University of Chemical Technology,Beijing 100020,China)
出处
《机车电传动》
北大核心
2019年第6期95-99,共5页
Electric Drive for Locomotives
