基于定子电流的直齿裂纹故障特征分析  

Fault Characteristic Analysis of Cracked Gear Based on Stator Current

作　　者：张磊 谷泉[1,2] 王仲 ZHANG Lei;GU Quan;WANG Zhong(School of Mechanical Engineering,Liaoning Institute of Science and Technology,Benxi Liaoning 117004,China;Liaoning Engineering Research Center for Health Monitoring and Maintenance Technology of Large Machinery Equipment,Benxi Liaoning 117004,China)

机构地区：[1]辽宁科技学院机械工程学院,辽宁本溪117004 [2]辽宁省大型机械设备健康监测与维护技术工程研究中心,辽宁本溪117004

出　　处：《辽宁科技学院学报》2024年第6期1-5,29,共6页Journal of Liaoning Institute of Science and Technology

基　　金：辽宁省教育厅科技创新团队项目“基于定子电流分析的兆瓦级风力机传动系统状态劣化与故障诊断研究”(LJ222411430021)。

摘　　要：文章考虑电机与传动系统间的强耦合作用,建立了包含齿根裂纹故障的电机-齿轮-负载耦合动力学模型。利用坐标系变换抑制定子电流中的电源频率成分,从而揭示了基于定子电流的齿轮裂纹故障特征。仿真结果表明,当齿轮传动系统出现裂纹故障时,坐标变换后定子电流包络谱中会出现明显的故障齿轮转动频率成分。该研究对进一步研究基于定子电流的传动系统故障诊断方法具有一定的科学意义。Considering the strong coupling between the motor,transmission system,and load,a lumped parameter dynamic model of the coupled system is established.Coordinate transformation is utilized to suppress the power frequency component in the stator current.The proposed model can be used to reveal the fault characteristics of gear cracks based on stator current.The simulation results show that there will be significant rotational frequency components of the cracked gear in the current envelope spectrum af⁃ter transformation.

关 键 词：齿轮 齿根裂纹 动力学模型 定子电流分析 

分 类 号：TH131[机械工程—机械制造及自动化]