电动机负载功率的小波分析  

Wavelet transform and its application in electromotor load power analysis

作　　者：张晓春[1] 胡彩雯[1] 

机构地区：[1]华北科技学院基础部,北京东燕郊101601

出　　处：《仪器仪表学报》2006年第z1期991-992,共2页Chinese Journal of Scientific Instrument

摘　　要：采煤机负载的随机性给电动机和机械传动系统带来严重威胁,因此有必要研究清楚截割负载的高频特性和低频特性。给出小波变换在电动机负载功率分析中的应用方法,用小波变换对采煤机截割电动机负载功率信号进行了多分辨率分析。结果表明,小波变换处理采煤机负载功率非平稳信号是有效的,并得到了高频分量和低频分量。该随机序列可以模拟采煤工作面的实际负载情况,监控采煤机工作状况。The random of shearer load seriously threat electromotor and the machinical system.It is necessary to research high frequency and low frequency character of cutter load.The application of wavelet in electromotor load power analysis is presented.Results derived from applying wavelet transform to perform multi-resolution analysis for load power signal of shearer's electromotor,the results show that wavelet transform was effective for unstable signals of shearer load power,it can acquire high frequency and low frequency composition.The random sequence can simulate actual load of coal face,supervise work tone of shearer.

关 键 词：小波分析 多分辨率分析 电动机 功率 采煤机 

分 类 号：TH7-55[机械工程—仪器科学与技术]