Interior Noise Control System for Ultra-Compact EV Equipped with Giant Magnetostrictive Actuator

(Fundamental Consideration on Reduction of Road Noise Using Adoptive Filter)

Abstract

Ultra-compact electric vehicles (EVs) have been become the popular tools of new transportation recently. However, there is interior noise problem such as road and wind noise from outside during driving in these vehicles. Our research group has proposed an active noise control (ANC) system for mounting an ultra-compact EV. The proposed ANC system includes giant magnetostrictive actuator which is one of the small actuator. We have been studied on noise reduction effect for control signal generated wall vibration by giant magnetostrictive actuator installed plate shaped part of ultra-compact EV. In this report, we conducted a basic study of noise reduction performance using an adaptive filter based on the LMS algorithm by simulation, and considered the noise reduction effect by comparison the settling time.