A method for eliminating periodic interference by sampling frequency control of discrete-time notch filter

이산-시간 노치 여파기의 표본화 주파수 제어에 의한 주기성 간섭의 제거방법

This paper proposes a new method for eliminating periodic interference corrupting a signal. The method proposed herein uses a variable notch filter by sampling frequency control to eliminate the interference. This method is applicable when an auxiliary reference input is available containing the interference alone. The sampling frequency is determined by the fundamental frequency of the periodic interference. Also, this paper proposes a design procedure so that it can be easily applied.