능동제어기법을 이용한 자동차의 흡기소음 저감

Engine noise is one of the major causes of the interior noise, and so has been studied in various ways in recent days. Recently Intake noise has been extensively studied to reduce the engine noise. Conventional method to reduce the noise is adding several resonators to the induction system. However this causes a reduction of engine output power and an increase of fuel consumption. In this study, the limit of the intake noise control performance using Filtered-x LMS algorithm during acceleration was identified. Intake noise is more excessively increased when the engine is rapidly accelerated. So, Modified LMS algorithm is applied to improve the control performance under the rapid acceleration.