摘要
本文采用虚拟仪器系统作为开发平台,通过电机振动测试进行故障诊断,针对电机的振动信号的特点,提出了基于自回归AR模型的功率倒谱分析方法。具体是先对电机振动信号进行AR建模:进行阶次预测和系数预测,得到相关参数;再进行倒谱变换。该方法能消除"频率模糊"现象,快速准确地提取出所需要的频谱信息。
Motor is important in the modern production of electrical equipment, electrical fault will cause a major impact on production.This paper choose virtual instrument system as platform to carry out fault diagnosis of motor through vibration test. In view of the electrical characteristics of the vibration signals,a method of power ceptrum analysis based on AR model is put forward.First, building an AR model of motor vibration signle,forecasting order and coefficient and getting relevant parameters;then proceedi...
出处
《电气技术》
2009年第9期31-33,共3页
Electrical Engineering
关键词
虚拟仪器
振动测试
AR模型
功率倒谱
virtual instrument
vibration test
AR model
power ceptrum
