Virtual Tire Slip Sound Control for EV Driving Emotion
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Solution Overview
Problem
Electric vehicles lack the auditory and emotional driving experiences associated with high-performance internal combustion engine vehicles, particularly the tire slip sound, which is an important emotional aspect for drivers.
Innovation Solution
A method to generate a virtual tire slip sound in electric vehicles by collecting vehicle driving information, determining the characteristics of the sound based on steering wheel angle, slip angle, slip rate, lateral tire force, and longitudinal tire force, and outputting the sound through sound equipment to simulate the experience of tire slip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If electric vehicle driving system is simplified without multi-stage transmission and acceleration mechanisms, then energy efficiency and smooth driving are improved, but driving emotion and auditory experience are degraded
Solution Approach 1:
The patent generates virtual tire slip sounds by copying the acoustic characteristics of real tire slip events. Sensors detect actual tire slip conditions (lateral acceleration, steering angle, wheel speed), and a sound generator reproduces the characteristic tire slip audio signals, allowing EVs to emulate the auditory experience of high-performance vehicles without physical modifications.
Solution Approach 2:
The patent replaces mechanical sound-generating components (clutches, torque converters, multi-stage transmissions) with an electronic sound generation system. Instead of using mechanical friction and vibration to produce tire slip sounds, the system uses sensors and audio generators to electronically synthesize and output the desired sounds through speakers.
2Ease of operation
If torque characteristics are made precise and smooth with fast reactivity, then driving control is improved, but driving fun and emotional engagement are reduced
Solution Approach 1:
The patent dynamically adjusts sound generation based on real-time driving conditions. The system continuously monitors lateral acceleration, steering angle, wheel speed, and other parameters to determine when tire slip is occurring, then dynamically generates and modulates sound signals to match the actual driving state, creating an adaptive emotional experience that responds to driver actions.
Solution Approach 2:
The system uses sensor feedback from multiple sources (lateral acceleration sensor, steering angle sensor, wheel speed sensor) to detect tire slip conditions and feeds this information back to the sound generator. This closed-loop feedback mechanism ensures the generated sounds accurately reflect the actual driving dynamics and tire slip events.
Data Source
AI summary
A method of generating a tire slip sound is capable of producing a virtual tire slip sound in a driving situation in which tire slip may occur during vehicle driving. The method includes collecting vehicle driving information while a vehicle is traveling; determining a characteristic of a virtual tire slip sound based on the collected vehicle driving information; generating and outputting a tire slip signal for generating and outputting the virtual tire slip sound according to the determined characteristic; and operating sound equipment of the vehicle according to the tire slip signal output from the controller to generate and output the virtual tire slip sound according to a vehicle driving state.