CN-114194127-B - Apparatus and method for generating virtual post-combustion effect in electric vehicle

CN114194127BCN 114194127 BCN114194127 BCN 114194127BCN-114194127-B

Abstract

The present invention relates to an apparatus and method for generating a virtual post-combustion effect in an electric vehicle, wherein the method for generating the virtual post-combustion effect in the electric vehicle using a controller includes the steps of receiving vehicle traveling information while the electric vehicle is driven by the controller, determining virtual variable information of an engine according to the received vehicle traveling information by the controller, determining virtual post-combustion effect characteristics according to the determined virtual variable information of the engine by the controller, outputting a control signal for generating the virtual post-combustion effect according to the determined virtual post-combustion effect characteristics by the controller, and controlling an operation of an effect generating apparatus configured to generate the virtual post-combustion effect according to the control signal output from the controller by the controller.

Inventors

WU ZHIYUAN
Pu Dongzhe
Yin Taijian
Yu Zhenxiu

Assignees

现代自动车株式会社
起亚自动车株式会社

Dates

Publication Date: 20260508
Application Date: 20201228
Priority Date: 20200917

Claims (11)

1. A method of producing a virtual post-combustion effect using a controller in an electric vehicle without an internal combustion engine, the post-combustion sound being a sound generated by a pressure change in an exhaust system of the internal combustion engine, the method comprising the steps of: receiving, by the controller, vehicle travel information when the electric vehicle is driven; Determining, by the controller, virtual variable information of an engine from the received vehicle running information using a virtual internal combustion engine model, wherein the virtual internal combustion engine model is a model preset in the controller for determining a value of the virtual variable information using the vehicle running information as an input variable of the virtual internal combustion engine model; Determining, by the controller, virtual post-combustion effect characteristics from the determined virtual variable information of the engine; outputting, by the controller, a control signal for generating a virtual post-combustion effect based on the determined virtual post-combustion effect characteristic, and Controlling, by the controller, an operation of an effect generating device configured to generate the virtual afterburning effect according to the control signal output from the controller, Wherein the virtual post-combustion effect characteristic includes a point in time at which the virtual post-combustion effect is initially generated by the effect generating means.
2. The method of claim 1, wherein the virtual post-combustion effect characteristic is a sound effect that is reproduced by an acoustic device and outputs sound that simulates post-combustion sound of an internal combustion engine vehicle, and the virtual post-combustion effect characteristic further includes at least one of intensity, duration, time interval, and frequency band or pitch indicative of sound level of the sound that simulates post-combustion sound.
3. The method of claim 1, wherein the virtual afterburning effect characteristic is a vibration effect that generates vibration by a vibrator simulating vehicle vibration caused by afterburning in an internal combustion engine vehicle, and the virtual afterburning effect characteristic further comprises at least one of intensity, frequency, duration, and time interval of vibration simulating vehicle vibration caused by afterburning.
4. The method of claim 1, wherein the virtual post-combustion effect characteristic is a light-emitting effect that reproduces a light-emitting state by a light-emitting device simulating a backfire in an internal combustion engine vehicle caused by post-combustion, and the virtual post-combustion effect characteristic further includes at least one of intensity, frequency, duration, and time interval of light-emitting simulating the backfire caused by post-combustion.
5. The method of claim 1, wherein the vehicle travel information includes at least one of an accelerator position sensor value indicative of an accelerator pedal input value of a driver, a slope of the accelerator position sensor value, an integral value of the accelerator position sensor value, a motor torque command, a slope of the motor torque command, an integral value of the motor torque command, drive system speed information, and a temperature of a power electronics component.
6. The method of claim 1, further comprising the step of: determining, by the controller, a base torque command from vehicle travel information collected from the electric vehicle during vehicle travel; determining, by the controller, a correction torque command for generating and implementing vibrations of an electric motor configured to produce the virtual afterburning effect according to vehicle travel information collected from the electric vehicle; Determining and generating, by the controller, a final motor torque command, wherein the determined base torque command is corrected by the determined correction torque command, and Controlling, by the controller, operation of an electric motor configured to drive the electric vehicle in accordance with the generated final motor torque command.
7. An apparatus for producing a virtual post-combustion effect in an electric vehicle without an internal combustion engine, the post-combustion sound being a sound generated by a pressure change in an exhaust system of the internal combustion engine, the apparatus comprising: A travel information detection unit configured to detect vehicle travel information when the electric vehicle travels; A controller configured to determine virtual variable information of an engine from vehicle running information detected by the running information detection unit using a virtual engine model, which is a model preset in the controller for determining a value of the virtual variable information using the vehicle running information as an input variable of the virtual engine model, to determine virtual post-combustion effect characteristics from the determined virtual variable information of the engine, and to output a control signal for generating the virtual post-combustion effect from the determined virtual post-combustion effect characteristics, and An effect generating device mounted on the electric vehicle to be controlled to generate the virtual post-combustion effect according to the control signal output from the controller, Wherein the virtual post-combustion effect characteristic includes a point in time at which the virtual post-combustion effect is initially generated by the effect generating means.
8. The apparatus of claim 7, wherein the virtual post-combustion effect characteristic is a sound effect that is reproduced and output by an acoustic device that simulates post-combustion sound of an internal combustion engine vehicle, and the virtual post-combustion effect characteristic further includes at least one of intensity, duration, time interval, and frequency band or pitch indicative of sound level of the sound that simulates post-combustion sound.
9. The apparatus of claim 7, wherein the virtual afterburning effect characteristic is a vibration effect that generates vibration by a vibrator simulating vehicle vibration caused by afterburning in an internal combustion engine vehicle, and the virtual afterburning effect characteristic further comprises at least one of intensity, frequency, duration, and time interval of vibration simulating vehicle vibration caused by afterburning.
10. The apparatus of claim 7, wherein the virtual afterburning effect characteristic is a light-emitting effect that reproduces a light-emitting state by a light-emitting device simulating backfire caused by afterburning in an internal combustion engine vehicle, and further comprises at least one of intensity, frequency, duration, and time interval of light emission simulating backfire caused by afterburning.
11. The apparatus of claim 7, wherein the controller comprises: A base torque command generation unit that determines a base torque command from vehicle travel information collected from the electric vehicle during vehicle travel; a virtual post-combustion generation control unit that generates a correction torque command for generating and realizing vibration of a motor configured to generate the virtual post-combustion effect, according to the determined virtual post-combustion effect characteristic; A final torque command generation unit that generates a final motor torque command, wherein the determined base torque command is corrected by the determined correction torque command, Wherein an operation of a motor configured to drive the electric vehicle is controlled in accordance with the final motor torque command generated and output from the final torque command generation unit.

Description

Apparatus and method for generating virtual post-combustion effect in electric vehicle Technical Field The present invention relates to an apparatus and method for providing a virtual post-combustion effect in a vehicle, and more particularly, to an apparatus and method for generating a virtual post-combustion effect in an electric vehicle without an internal combustion engine according to a driving situation of the vehicle. Background Electric Vehicles (EVs) are known to be vehicles that operate using electric motors. The driving system of the electric vehicle includes a motor provided as a vehicle driving source, a battery chargeable or dischargeable to the motor to supply electric power to drive the motor, an inverter connected to the battery to drive and control the motor, and a decelerator to reduce a rotational force of the motor and transmit it to a driving wheel. Here, the inverter is configured to convert Direct Current (DC) supplied from the battery into Alternating Current (AC), and apply AC to the motor via a power line during driving of the motor, and convert AC generated from the motor into DC, and supply the DC to the battery, charging the battery. The drive system of the electric vehicle as described above generates power by driving the motor with battery power, rather than by burning fuel as in the conventional internal combustion engine vehicle. Therefore, unlike the torque of the internal combustion engine generated by aerodynamic and thermodynamic reactions, the torque of the electric vehicle is more accurate, smoother, and more responsive than the torque of the internal combustion engine. Although these characteristics play a positive role in electric vehicles, in the case of high-performance vehicles, various effects generated by noise, physical vibration, and thermodynamic effects of the internal combustion engine are also important emotionally in some cases. One of the factors that electric vehicles cannot provide due to their characteristics is the post-combustion sound and the resultant backfire phenomenon that is generally perceived in high performance internal combustion engine vehicles. The post-combustion sound is a sound generated by a pressure change in the exhaust system of the internal combustion engine. In high performance vehicles, when rich fuel is discharged through the exhaust manifold for various reasons without being ignited in the engine cylinders, it expands in the hot exhaust pipe to generate post-combustion sound. Such post-combustion sounds cause a vehicle occupant, such as a driver, to feel a dynamic driving feel and stimulus. Accordingly, there is a need for a technique configured to virtually provide a post-combustion effect similar to that of an internal combustion engine in an electric vehicle. The information included in the background section of the invention is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art. Disclosure of Invention Various aspects of the present invention are directed to providing an apparatus and method for generating a virtual post-combustion effect in an electric vehicle without an internal combustion engine according to a driving condition of the vehicle. In various aspects of the present invention, an apparatus and method for generating a virtual post-combustion effect in an electric vehicle are provided. According to the apparatus and method for providing a virtual post-combustion effect of an electric vehicle, even in an electric vehicle, a post-combustion effect including post-combustion sound, backfire and vibration in an internal combustion engine vehicle can be virtually provided, providing a driver with a dynamic sporty driving feeling and stimulus that can be perceived only in a high-performance automobile, which improves and distinguishes the product quality of the electric vehicle. According to the apparatus and method for providing a virtual post-combustion effect in an electric vehicle, when a driver desires to drive a ride-on fun of an electric vehicle having only quiet driving characteristics, the virtual post-combustion effect is provided so that the driver can feel jerk and driving stimulus even in his electric vehicle. The method and apparatus of the present invention have other features and advantages that will be apparent from or are set forth in more detail in the accompanying drawings and the following detailed description, which, together, serve to explain certain principles of the invention. Drawings Fig. 1 is a block diagram illustrating a virtual afterburning effect providing method according to various exemplary embodiments of the present invention; fig. 2 is a block diagram showing a configuration of a virtual afterburner effect providing apparatus according to various exemplary embodiments of the present invention;