摘要
在电能表检定装置中,由于被检电能表转盘侧面加工不规则,时常引起光电头输出附加计圈脉冲,从而导致计圈不准。为此本文提出了一种自适应滤波方法,该方法根据电能表实时功率自动修改滤波时间常数,这样不论电能表满载还是轻载,都能滤除光电头输出的附加计圈脉冲,使计圈准确无误。本文论述了该自适应滤波方法的原理及其硬件、软件的实现方法。
In the testing equipment for electrical energy meters, the rough side of the tested meter's turntable often disturbes the output of photoreader and mistakes the revolution counter of turntable. For this reason, an adaptive filter is designed. The adaptive filter whose time constant is modified automatically with the tested meter's load can filter off all the disturbance, no matter how the tested meter's load with change. This paper discuses the principle of the adaptive filter and the method. realized by hardware and software.
出处
《电子测量与仪器学报》
CSCD
1993年第4期47-52,共6页
Journal of Electronic Measurement and Instrumentation
关键词
自适应滤波器
电能表
检定装置
adaptive filter
photoreader
revolution counter
electrical energy meter
testing equipment
