摘要
在变频器测试中,由于变频器的高频谐波带来的大幅值离散噪声严重影响了数据采集信号的准确性,一般低通滤波算法无法滤除这种噪声,提出了一种数字滤波算法,解决了这种噪声的滤波问题,它可以有效地滤去信号中的大幅值离散噪点,从受到严重干扰的信号中恢复出真实信号。
In transducer test, the high amplitude discrete noise, caused by the transducer＇s high frequency harmonic wave, affects the data acquisition accuracy seriously, Since normal low pass filtering arithmetic can＇t remove such noise, a specific digital filtering arithmetic is proposed to deal with such noise. This arithmetic can annihilate the high amplitude discrete noise and recover true signal from acquired original signal, which is badly distorted by the high frequency interference.
出处
《测控技术》
CSCD
2005年第8期12-15,共4页
Measurement & Control Technology
关键词
大幅值离散噪声
信号失真
数字滤波算法
信号恢复
high amplitude discrete noise
signal distortion
digital filtering arithmetic
signal recovery
