METHOD OF CONTROLLING TRAVELING SOUND OF ELECTRIC VEHICLE USING MOTOR VIBRATION AND VIRTUAL TRANSMISSION SIGNAL

Abstract: a method of controlling an electric vehicle traveling sound using motor vibration and a virtual transmission signal includes extracting, by a signal processing controller, a vibration level of an norder component with a largest linearity for a motor output torque among order components extracted from a vibration signal of a rotating electric vehicle (ev) motor and a virtual engine rpm, determining, by the signal processing controller, a frequency for each order component by transforming revolutions per minute (rpm) of the ev motor into a frequency, and setting, by the signal processing controller, an ev mode traveling sound by applying the vibration level of the norder component to a level of the frequency for each order component to be output and re-arranging the order components so that the virtual engine revolutions per minute (rpm) reflects a traveling mode shifted according to a virtual gear stage number.

Inventor(s): Dong-Chul LEE, Kyoung-Jin Noh, Jeong-Soo Eo, Ji-Won Oh, In-Soo Jung

CPC Classification: G10K11/1781 (by electro-acoustically regenerating the original acoustic waves in anti-phase)

Search for rejections for patent application number 20250174219