基于加窗插值FFT的加速度传感器信号处理方法  

Signal Processing Method of Accelerometers Based on Windowed Interpolation FFT

作　　者：张浩[1] 王建林[1] 赵利强[1] 于涛[1] 

机构地区：[1]北京化工大学信息科学与技术学院,北京100029

出　　处：《仪表技术与传感器》2016年第2期12-14,17,共4页Instrument Technique and Sensor

基　　金：国家重大科学仪器设备开发专项项目(2012YQ090208)

摘　　要：针对快速傅里叶变换在加速度传感器动态特性分析时产生的频谱泄漏等问题,提出一种基于加窗插值FFT的加速度传感器信号处理方法。该方法选取精度较高的汉宁窗和三次样条插值函数对信号进行处理,抑制频谱泄漏等带来的干扰,并通过经验传递函数估计方法得到高精度的频率响应估计。实验结果表明,该方法能够有效地提高加速度传感器频率响应函数的估计精度。In order to overcome the effect of fast fourier transform such as spectrum leakage,which is caused in accelerometer dynamic characteristics analysis,an accelerometer signal processing method based on windowed and interpolation FFT was proposed. Aiming to suppress the influence of spectrum leakage and fence effect,this method selected higher precision hanning window and adopted cubic spline interpolation to process signal,and acquires frequency response by experienced transfer function estimation. The experiment results show that this method can effectively improve the estimation accuracy of frequency response function.

关 键 词：加速度传感器 频谱泄漏 加窗插值算法 频率响应函数 

分 类 号：TH824[机械工程—仪器科学与技术]