One-Pedal Driving Distance Control in Congested Traffic
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Solution Overview
Problem
One-pedal driving in electrified vehicles is inconvenient in congested sections due to the need for frequent and precise adjustments of the accelerator pedal to maintain a constant distance from the vehicle ahead, leading to driver ankle strain and reduced utilization of this driving mode.
Innovation Solution
A method of controlling a vehicle using sensors to automatically adjust the relative speed and distance from the vehicle ahead, enabling an automatic distance control mode that reduces the need for frequent pedal adjustments by using real-time driving and vehicle-ahead information to maintain a target relative distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If one-pedal driving is used in congested sections, then fuel efficiency and vehicle efficiency are improved through regenerative braking, but driver convenience deteriorates due to frequent and precise accelerator pedal adjustments required to maintain constant distance
Solution Approach 1:
The patent introduces front sensors (radar, ultrasonic sensors) as intermediary devices that detect the distance to the vehicle ahead and provide this information to the controller. This intermediary sensing system enables automatic distance control, eliminating the need for continuous manual pedal adjustments while maintaining regenerative braking efficiency in congested sections.
Solution Approach 2:
The patent implements a feedback control system where the controller continuously receives real-time distance information from front sensors, compares it with the target distance, and automatically adjusts the accelerator pedal position or regenerative braking force to maintain the desired following distance. This closed-loop feedback eliminates manual intervention while preserving energy efficiency.
2Measurement precision
If manual accelerator pedal adjustment is used to maintain constant distance, then distance control is achieved, but driver strain increases due to frequent ankle movements
Solution Approach 1:
The patent enables the vehicle system to serve itself by implementing automatic distance control through the controller that autonomously manages the accelerator pedal and regenerative braking based on sensor input. The system self-adjusts without requiring driver ankle movements, eliminating physical strain while maintaining precise distance control through electronic actuation.
Solution Approach 2:
The patent replaces the mechanical system of manual pedal operation with an electronic control system. The controller uses electronic signals to automatically adjust the accelerator pedal position and regenerative braking force based on real-time distance measurements, substituting mechanical driver input with electronic actuation to eliminate ankle strain.
Data Source
AI summary
In accordance with an embodiment, a method of controlling a vehicle for one-pedal driving assistance includes acquiring real-time driving information of a subject vehicle detected by a driving information detection unit and real-time vehicle-ahead information detected by a front detection unit; determining whether the subject vehicle has entered an automatic control inspection section using relative distance information with respect to a vehicle ahead in the acquired real-time vehicle-ahead information; starting an automatic distance control mode upon determining that the subject vehicle has entered the automatic control inspection section; and controlling a relative speed with respect to the vehicle ahead so that a relative distance with respect to the vehicle ahead is allowed to be adjusted to a target relative distance with respect to the vehicle ahead based on the real-time driving information and the real-time vehicle-ahead information during the automatic distance control mode.