抑制机械谐振的一种改进的数字滤波器  

An improved digital filter for restraining mechanical resonance frequency

作　　者：杨辉[1] 范永坤[1] 舒怀亮[1] 

机构地区：[1]中国科学院光电技术研究所,四川成都610209

出　　处：《光电工程》2004年第B12期30-32,39,共4页Opto-Electronic Engineering

摘　　要：分析了机械谐振频率对经纬仪系统性能的影响,在传统双 T 网络的基础上,提出了一种改进的数字滤波器。该滤波器可以通过适当的参数修改达到控制机械谐振点陷波幅值的效果。实验表明,本文提出的改进的数字滤波器滤波效果好于传统的双 T 网络滤波器。Mechanical resonance frequency has an obvious influence on theodolite performance. On the basis of traditional double-T net filter, an improved digital filter is proposed in the paper. The filter can control the amplitude of mechanical resonance by adjusting proper parameter. Experiments show that the improved digital filter is better than traditional double-T-net filter.

关 键 词：数字滤波器 机械谐振 谐振频率 双T网络 

分 类 号：TN713.7[电子电信—电路与系统]