Lane Keeping Assist Torque Adjustment for Adjacent Vehicles
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Solution Overview
Problem
Existing Lane Keeping Assist/Support (LKAS) systems cause driver discomfort by performing torque control without considering adjacent vehicles, leading to an unpleasant experience during lane keeping assistance.
Innovation Solution
The LKAS system incorporates an around-view monitoring system to determine the presence and position of adjacent vehicles, calculating a proximity index to adjust torque control timing and quantity, ensuring comfortable operation by varying torque control based on the presence and distance of adjacent vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the LKAS system performs torque control to prevent lane departure, then lane keeping effectiveness is improved, but driver comfort deteriorates when adjacent vehicles are present
Solution Approach 1:
The LKAS system dynamically adjusts torque control parameters (torque magnitude, timing, and duration) based on the presence and position of adjacent vehicles detected by the AVM system. When an adjacent vehicle is detected, the system modifies the torque control strategy to be less aggressive, thereby maintaining lane keeping effectiveness while improving driver comfort.
Solution Approach 2:
The system changes control parameters including torque magnitude, torque timing, and torque duration based on the proximity index calculated from adjacent vehicle positions. This allows the LKAS to adapt its control behavior to different traffic scenarios, resolving the contradiction between maintaining reliable lane keeping and ensuring driver comfort.
2Manufacturing precision
If the LKAS system applies strong torque control to correct lane departure, then lane keeping precision is improved, but driver discomfort increases
Solution Approach 1:
The system applies different torque control strategies to different situations by calculating a proximity index based on the position of adjacent vehicles. When the proximity index indicates high risk (adjacent vehicles nearby), the system reduces torque magnitude to improve comfort. When the proximity index indicates low risk, the system can apply stronger torque for better lane keeping precision.
3Reliability
If the LKAS system delays torque control to ensure safety, then collision risk is reduced, but lane keeping responsiveness deteriorates
Solution Approach 1:
The system performs preliminary detection of adjacent vehicles using the AVM system and calculates the proximity index before applying torque control. This allows the system to determine the appropriate torque strategy in advance, ensuring both safety and responsiveness by selecting optimal torque timing based on the detected traffic environment.
Data Source
AI summary
A lane keeping assist/support (LKAS) system for preventing lane departure of a vehicle includes: an LKAS controller determining whether an adjacent vehicle is present by analyzing around-view images of the vehicle acquired by an around-view monitoring (AVM) system; a vehicle position calculator calculating a position of the vehicle; an adjacent vehicle position calculator calculating a position of the adjacent vehicle; a torque controller determining whether a proximity index generated according to the calculated position of the vehicle and the calculated position of the adjacent vehicle is less than a threshold value and correcting an initial torque timing and an initial torque based on the calculated position of the vehicle when the proximity index is less than the threshold value; and a steering apparatus controlling steering of the vehicle according to the corrected initial torque timing and the corrected initial torque.