基于FPGA的FFT算法在船舶电站监控中的实现

FFT Algorithm Programmed FPGA for Ship Power Plant Monitoring

针对船舶电站监控系统的特点及其对参数实时监控的要求,提出基于现场可编程门阵列(Field-Programmable Gate Array,FPGA)的快速傅里叶变换(Fast Fourier Transform,FFT)算法,并将其应用到船舶电站监控系统中。为验证FFT算法在检测识别船舶电压信号方面的有效性,分别在FPGA和MATLAB平台上对船舶电力系统中的电压三次谐波函数信号进行FFT计算。在FPGA中得到的运算结果与MATLAB中得到的运算结果基本一致,表明基于FPGA的FFT算法能有效识别出不同频率的信号成分,在船舶电站监控中对参数检测具有较好的应用价值。

This paper puts forward an Field-Programmable Gate Array（FPGA） programmed with an Fast Fourier Transform （FFT） based Algorithm for the real time monitoring system of ship power station. The effectiveness of the design in the voltage signal detection and the third-harmonic analysis is checked in MATLAB environment and with programmed FPGA respectively. The results obtained with the FPGA are basically the same as those from the MATLAB, which proves that the design is successful.