便携式故障诊断系统中FFT算法的设计  

Design of FFT Algorithm in the Portable Fault Diagnosis System

作　　者：张志坚[1] 周凤星[1] 卢少武[1] 

机构地区：[1]武汉科技大学信息科学与工程学院,武汉430081

出　　处：《组合机床与自动化加工技术》2015年第1期103-105,共3页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金(61174106);中国博士后科学基金(2014M552091);武汉科技大学校青年科技骨干培育计划(2014xz009)

摘　　要：设计并实现了一种适用于便携式故障诊断系统中的FFT算法,该FFT算法利用外部RAM芯片解决了便携式故障诊断系统中数字处理器在计算大数据量FFT算法时出现的内存不足问题。并对实现该FFT算法系统的硬件组成进行了阐述,给出了该FFT算法的软件流程图和软件设计中的要点。将FFT算法应用在便携式故障诊断系统上能够快速并且精确地计算出故障信号的频率,特别适用于便携式故障诊断系统中大数据量的FFT运算。A FFT algorithm which is suitable for the portable fault diagnosis system is designed and realized in the paper, the FFT algorithm using the external RAM chip solves the problem that the processor of the portable fault diagnosis system is out of memory when the processer calculates the FFT algorithm with a large amount of data. The hardware components used to implement the FFT algorithm are introduced, and in software design, the software flow and the main points are present. Finally, the FFT algorithm in the paper can quickly and accurately calculate the fault signal’ s frequency and especially suitable for the FFT algorithm with large amount of data in the portable fault diagnosis system.

关 键 词：便携式故障诊断系统 大数据量 FFT算法 外部RAM芯片 

分 类 号：TH165.3[机械工程—机械制造及自动化] TG659[金属学及工艺—金属切削加工及机床]