RFFT在涡街流量传感器信号处理中的应用  

Application of RFFT in vortex flow sensor signal processing

作　　者：王肖芬[1] 雷武[1] 

机构地区：[1]上海理工大学光电学院,上海200093

出　　处：《电子测量技术》2010年第2期123-126,共4页Electronic Measurement Technology

摘　　要：在涡街信号处理系统中,涡街信号传感器所采集到的信号都是实数信号,而快速傅里叶变换(FFT)处理对象都是复数序列,传统的方法是将实数当做虚部为零的复数,采用实数傅里叶变换(RFFT)算法对涡街信号进行数字处理,通过数据验证和误差分析,证明了RFFT这种算法的可行性,这种算法减少了算法的计算量,满足了测量仪表对实时性的要求。In the vortex signal processing system, the signal collected by the vortex sensor is often a real sequence, while the Fast Fourier Transform （FFT） process the target which is complex sequence, the traditional approach is to take the imaginary part of a real sequence as a zero, this paper adopts RFFT algorithm to deal with the vortex signal. The RFFT algorithm has been proved to be practical through data validation and error analysis. This method reduces the computation and enables it process signals in real time.

关 键 词：快速傅里叶变换 涡街信号 实序列 

分 类 号：TN711[电子电信—电路与系统]