摘要
通过对正常齿轮系统和故障齿轮系统振动信号的试验测试,提取了正常与故障齿轮的信号特征,以声学理论为基础,在系统运转的情况下分别在时域和频域对系统振动所产生的声压进行了模拟计算,并对正常情况、齿根裂纹故障情况(深度为3mm和5mm)、分度圆裂纹故障(深度为2mm和4mm)及齿面磨损情况下齿轮系统的辐射声压进行了比较分析,并与试验结果进行了对比验证。结果表明,利用声诊断方法不仅可以较好地对几种典型故障(类型,大小)进行初步定征和识别,在故障诊断领域有良好的应用前景,而且可以降低声压级测量的成本,有效避免环境噪声的影响。
This article uses the vibration signals of the gear system on the fault of root failure （3mm, 5mm） , failure in the pitch circle （2mm, 4mm） and abrasion on the surface of gear to calculate the sound pressure level of the normal gear tooth and root failure, failure in the pitch circle at the rotate speed of 1200r/min in time--domain and frequency--domain based on the acoustics theory. And then it compares the effects under the different conditions. The results show that this method can not only carry out a preliminary identification on some represent- ative faults （type , size）, and it has a good application prospects in the field of fault diagnosis, but also can reduce the cost of measuring sound pressure level, and avoid the influence of environmental noise.
出处
《计算机测量与控制》
CSCD
北大核心
2009年第9期1688-1691,共4页
Computer Measurement &Control
基金
国家自然科学基金(50575187)
航空科学基金(01I53073)
陕西省自然科学基金(2004E219)资助项目
关键词
齿轮系统
振动信号
噪声预估
故障诊断
声压级
gear system
vibration signal~ noise forecast
fault diagnosis
sound pressure level
