基于分形理论的便携式故障诊断系统的设计与开发  

Design and development of portable fault diagnosis system based on fractal theory

作　　者：郝研[1] 王太勇[1,2] 

机构地区：[1]天津大学精密仪器与光电子工程学院,天津300072 [2]天津大学机械工程学院,天津300072

出　　处：《仪器仪表学报》2010年第12期2742-2747,共6页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(50975193);国家科技重大专项(2009ZX04014-101-05)资助项目

摘　　要：分形理论在振动信号分析中的应用是当前机械故障诊断领域的研究热点。以"ARM+DSP"双CPU结构作为硬件基础,以嵌入式操作系统作为软件载体,构建了基于分形理论的故障诊断系统,实现了信号采集、信号存储、信号分析、波形显示等功能,并以分形维数作为特征量对振动信号进行分析和故障诊断。实验结果证明,基于分形理论的便携式故障诊断仪器性能稳定,通过计算振动信号的分形维数,判断故障的类型,准确有效、实用性强。Application of fractal theory is current study hotspot in the field of mechanical fault diagnosis.A fault diagnosis system based on fractal theory was developed,which uses ＂ARM＋DSP＂ dual-core structure as the hardware and an embedded operating system as the software,and implements signal acquisition,data storage,data analysis,waveform display and etc.The fractal dimension is adopted as the characteristic quantity to analyze vibration signals for fault diagnosis.Experiment results show that the function of the portable fault diagnosis instrument is stable.The fractal dimension of machine vibration signals is calculated to decide the fault type,which is veracious,effective and has strong practicability.

关 键 词：分形 盒维数 故障诊断 便携式仪器 双CPU 嵌入式系统 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置] TP277[自动化与计算机技术—控制科学与工程]