【作者】 李蒙；

【导师】 张进明；

【作者基本信息】 北京化工大学 ， 检测技术与自动化装置， 2005， 硕士

【摘要】 旋转机械的振动测试是设备运转状态监测的重要组成部分。转子是旋转机械的核心部件,旋转机械设备许多运行故障都与转子振动密切相关,通过在线测量转子振动可以及时获得设备运行状况,保证设备可靠安全运行。因此,研制转子振动监测仪具有重要的实用价值。 论文在详细分析转子振动监测的基础上,研究了转子振动特征信号的提取方法,运用锁相环技术实现了自适应抗混叠跟踪滤波器和整周期采样,研制了便携式振动数据采集与处理系统。该系统采用电涡流传感器对转子振动位移进行监测;利用多处理器嵌入式技术,以数字信号处理器(Digital Signal Processor,DSP)为核心完成信号采集、数据处理与分析,微控制器(Micro Controller Unit,MCU)实现测量结果的显示、存储及查询。 实验研究表明,研制的便携式振动数据采集与处理系统能够完成多通道实时整周期采样;实现了振动信号的峰-峰值、轴心位置、轴心轨迹的计算以及频谱分析。为今后振动监测的功能扩展提供了良好的硬件平台。更多还原

【Abstract】 The vibration measurement of rotating machinery is the important component of monitoring equipment operation state. The rotor is key part of rotating machinery. Much operation failure of rotating machinery correlates with rotor vibration nearly. The equipment operation state can be realized through on-line measuring rotor vibration., which ensures that equipment operates without fault. Therefore, it has an important meaning in application to develop rotor vibration apparatus.In this paper, on the basis of detailed analysis of measuring rotor vibration, rotor vibration characteristic signal has been studied. It realizes acquisition in a complete sampling period and anti-aliasing filtering circuit through phase-locked loop; and develops the portable vibration signal acquisition and processing system. The system adopts eddy current sensor to realize the measurement of rotor vibration displacement. It utilizes multi-processor embedded technology which taking Digital Signal Processor as the core finishes data acquisition, processing and analysis. Furthermore, Micro Controller Unit implements displaying , storing and更多还原