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.
出处
《仪表技术与传感器》
CSCD
北大核心
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)
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
accelerometers
spectrum leakage
windowed interpolation algorithm
frequency response function
