作　　者： ; ;

机构地区： 南阳理工学院机械与汽车工程学院

出　　处： 《南阳理工学院学报》 2011年第2期59-63,83,共6页

摘　　要： 不平衡、不对中、弯曲、松动、碰摩等故障常导致旋转机械动态特性恶化。对转子振动信号的监测与分析,是判断设备故障类型及预测故障发展趋势的主要手段。本文开发出一种可实现故障模拟的多功能转子振动测试系统。通过改变轮盘的不平衡质量、调整轴承座的高度、控制润滑状态等方法模拟转子动平衡、不对中、轴承故障等多项实验。测试系统由转子实验台、传感器与信号调理设备、NI公司的6009数据采集卡及计算机组成。采用LabVIEW 8.5设计了测试系统软件,详细讨论了转速、加速度及位移信号的采集与处理方法。测试结果表明,不同工作状态下轴承座振动信号的时域、频域波形和转子轴心轨迹形状可用于表征转子各单项及综合故障。 Many failures,such as unbalance, nonalignment, flexural, loose and collision wear,often worsen the dynamic properties of mechanical device. Monitoring and analyzing the rotor vibration signal is the principal method to identify the troubles type and to forecast the failure trend. Multi - function vibration testing system which simulates rotor failure in different operating condition was developed in this paper. Rotor dynamic balance, non - alignment and bearing fault could be simulated in this equipment by changing the wheel disc unbalance mass, adjusting bearing block height and controlling oil lubrication condition. Testing system was consisted of rotor experiment table, sensor and signal regulation facility, NI USB - 6009 data acquisition card and computer. Testing software was de- veloped with LabVIEW8.5. Acquisition and processing methods of three signals including rotation speed, acceleration and displacement were also detailed. Testing results indicated that time and frequency domain waveform of bearing block vibration signal and rotor axis locus form could be used to characterize rotor individual fault and comolex fault in different working condition.

关 键 词： 转子振动 故障模拟 数据采集与处理

领　　域： [机械工程]