Stability Analysis of an Active Periodic Noise Control System

Abstract

Abstract: This paper presents or stabiliry analysis of an active periodic noise control (APNC) system using an internally generated impulse train with the same fundamental frequency as the noise to be canceled as reference input. The stability analysis is made through the use of polar plots and shows how the compensation of the input to the LMS adaptation cfiltered-X) can improve stability of the APNC system. This polar plot also shows the relationship between the stability of the system and step size p andjilter order hr.