基于改进ApFFT的动平衡信号检测算法  

Dynamic Balanced Signal Detection Based on Improved All Phase Fourier Transform Algorithm

作　　者：王相怡 陈桂芬[1] 王义君 WANG Xiangyi;CHEN Guifen;WANG Yijun(School of Electronics and Information Engineering,Changchun University of Science and Technology,Changchun 130022;Changchun China Optical Science&Technology Museum,Changchun 130117)

机构地区：[1]长春理工大学电子信息工程学院,长春130022 [2]长春中国光学科学技术馆,长春130117

出　　处：《长春理工大学学报（自然科学版）》2018年第5期88-92,104,共6页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：吉林省教育厅项目(201576);吉林省科技厅重点科技成果转化项目(20140307009GX)

摘　　要：动平衡信号的检测应用于精密仪器,需具有较高精度。针对传统方法在处理动平衡信号时存在的能量泄露和分析精度不够的问题,提出改进的全相位FFT (ApFFT)动平衡信号检测算法。ApFFT能够准确提取动平衡信号的相位信息,然后基于时移相位差法修正幅值与频率。仿真结果表明,相比于传统FFT与短时傅里叶变换,改进的全相位FFT算法能高精度测量频率、幅值及相位信息,其相位误差达到10-5级别,幅值与频率误差分别为0.11%和0.48‰,并具有极好的抗高斯白噪声的性能。Dynamic balance signal detection is applied to precision instruments,requiring higher accuracy.Aiming at the problem that the traditional method in the treatment of the dynamic balance of signal energy loss and analysis precision is not enough,an algorithm of the dynamic balance of signals based on the improved all-phase FFT was proposed in this paper.The phase information of the dynamic balance signal can accurately be obtained by the algorithm;and then the amplitude and frequency can be revised by using the time shift phase difference method.The simulation results show that the improved all-phase FFT(ApFFT)algorithm can measure the frequency,amplitude and phase information with high accuracy,compared with the traditional FFT and short-time Fourier transform.The phase error is 10-5,the amplitude and frequency error is respectively 0.11%and 0.48‰,and has excellent anti-gaussian white noise interference performance.

关 键 词：动平衡测量 频谱分析 全相位FFT 时移相位差 

分 类 号：TN98[电子电信—信息与通信工程]