摘要
以碰摩故障为研究对象,将非线性输出频率响应函数(NOFRF)引入到含有碰摩的转子系统故障诊断中。对比分析在转子与定子不同间隙下的转子系统NOFRF值的变化情况,并进行了试验验证。结果表明故障转子系统的NOFRF值对转子与定子不同间隙的变化非常敏感,因此,可以利用转子系统的NOFRF值对碰摩故障的敏感性,不仅可以有效地区分转子系统中的碰摩故障,而且还可以有效地识别转子系统中的碰摩故障的严重程度。
Nonlinear output frequency response function is introduced to fault diagnosis of rotor system with rub-impact. NOFRF values in the rotor and the stator rotor system with different gap are compared,and the experimental verification is carried out.The experiment results show that the NOFRF value is very sensitive to different rubbing gap. Therefore,the sensitivity of NOFRF value to the rubbing fault can be used to effectively distinguish the rub impact fault in the rotor system,and identify the severity of the rubbing fault in the rotor system.
出处
《失效分析与预防》
2016年第2期67-71,共5页
Failure Analysis and Prevention
基金
国家自然科学基金(51265039
51075372
50775208)
机械传动国家重点实验室开放基金(SKLMT-KFKT-201514)
关键词
非线性输出频率响应函数
碰摩
故障诊断
转子系统
nonlinear output frequency response function
rub-impact
fault diagnosis
rotor system
