Vehicle, vehicle control method and vehicle driving sound control apparatus
US-2015364125-A1 · Dec 17, 2015 · US
Method of controlling traveling sound of electric vehicle using motor vibration and virtual transmission signal
US2025174219A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025174219-A1 |
| Application number | US-202418737649-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 7, 2024 |
| Priority date | Nov 29, 2023 |
| Publication date | May 29, 2025 |
| Grant date | — |
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Abstract
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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 N th order 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 N th order 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.
First claim
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What is claimed is: 1 . A method of controlling an electric vehicle (EV) traveling sound using motor vibration and a virtual transmission signal, the method comprising: extracting, by a signal processing controller, a vibration level of an N th order component with a largest linearity for a motor output torque among order components extracted from a vibration signal of a rotating EV motor and a virtual engine revolutions per minute (RPM); determining, by the signal processing controller, a frequency for each order component by transforming an 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 N th order 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 RPM reflects a traveling mode shifted according to a virtual gear stage number. 2 . The method of claim 1 , wherein the N th order component is an N th order component of which a coefficient of determination R 2 is 90% or more. 3 . The method of claim 1 , wherein the order components are determined from a vibration sensor configured to detect the vibration signal of the EV motor. 4 . The method of claim 1 , wherein the virtual engine RPM is determined by Equation 1, Virtual engine RPM = actually measured motor RPM × gear ratio of the number of virtual target stages . [ Equation 1 ] The method of claim 1 , wherin for the virtual gear stage number , a difference between a virtual target gear stage and a virtual current gear stage is caused by a tranmission proceeding rate of Equation 2 , 5. Transmission proceeding rate = ( virtual engine RPM - current gear stage RPM
Assignees
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Classifications
- B60Q5/008Primary
for signaling silent vehicles, e.g. for warning that a hybrid or electric vehicle is approaching · CPC title
for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed · CPC title
Rotating machines, e.g. engines, turbines, motors; Periodic or quasi-periodic signals in general · CPC title
Automobiles · CPC title
Torque · CPC title
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- What does patent US2025174219A1 cover?
- 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 N th order 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, det…
- Who is the assignee on this patent?
- Hyundai Motor Co Ltd, Kia Corp
- What technology area does this patent fall under?
- Primary CPC classification B60Q5/008. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu May 29 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).