摘要
利用DSP高速、内存较大的特点,对振弦传感器输出信号进行过采样处理,以提高信噪比。提出了将Quinn和Rife-Jane算法结合起来对经过FFT变换后的信号进行精确频率计算。实验证明频率测量误差不大于1%,同时具有较强的抗干扰性。
Taking advantages of high speed and large memory of DSP, the output signal of vibrating-wire sensor is processed by the technique of over sampling to increase the signal-to-noise ratio. A method for combining Quinn and Rife-Jane estimation algorithms is proposed to determine the signal frequency after the FFT algorithm. The test proves that the measuring error of frequency is below 1% with a high anti-disturbance ability.
出处
《数据采集与处理》
CSCD
北大核心
2008年第B09期136-139,共4页
Journal of Data Acquisition and Processing
