摘要
为了补偿由于拾振器及其测量系统有限带宽而使测量结果产生的测量误差,本文提出了一种用FIR横向滤波器来恢复拾振器原始输入信号的方法。该方法是将拾振器的输出信号作为FIR横向滤波器的输入,用自适应RLS算法对FIR横向滤波器系数进行辨识而最终获得可以恢复拾振器原始输入信号的反卷积滤波器。通过用几组不同特点的信号对其进行实验检验,结果证明该方法的有效性和较好的泛化能力。
In order to compensate the measurement error of measuring result caused by limited band of a vibration pick-up and its measurement system, a method for recovering the original input signal of the vibration pick-up using FIR transversal filter is presented. The coefficients of the FIR transversal filter was identified by using adaptive RLS algorithm while the output signal of the vibration pick-up was input into the FIR transversal filter. An inverse-convolution filter was acquired to recover the original input signal of vibration pick-up. The final results examined by serial different characteristic signals indicate that the method presented is effective and appears to have fine generalization ability.
出处
《地震工程与工程振动》
CSCD
北大核心
2005年第1期172-175,共4页
Earthquake Engineering and Engineering Dynamics
基金
科技部科研专项基金项目(2003DID2J099)
地震科学联合基金项目(104139)
国家自然科学基金项目(50378086)
