Adaptive Distance Control During Vehicle Lane Changes
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Solution Overview
Problem
Existing vehicle distance control systems lack the ability to smoothly adjust target distances during lane changes, leading to abrupt acceleration or braking, which compromises driving comfort and natural driving behavior.
Innovation Solution
An electronic distance control system that adjusts target distances through a series of intermediate distances (third target distances) based on lane changes and convoy probabilities, using vehicle history memories and sensor data to determine optimal distance transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the target distance is abruptly changed during lane change, then the distance control system can quickly adapt to the new lane, but driving comfort deteriorates due to abrupt acceleration or braking
Solution Approach 1:
The patent segments the target distance adjustment into multiple intermediate steps (first target distance, second target distance, third target distance) instead of making a single abrupt change. This segmentation allows the distance control system to adapt to the new lane while maintaining smooth acceleration/deceleration profiles, thereby preserving driving comfort.
Solution Approach 2:
The patent implements dynamic adjustment of the target distance based on the lane change state. The system transitions from a first target distance in the initial lane to a second target distance in the new lane through intermediate third target distances, creating a dynamic and adaptive response that balances quick adaptation with driving comfort.
2Adaptability or versatility
If the target distance is adjusted based on lane position, then the distance control becomes more adaptive to different driving conditions, but the system complexity increases
Solution Approach 1:
The patent stores multiple pre-defined target distances (first target distance for initial lane, second target distance for new lane, and intermediate third target distances) in advance. During lane change, the system simply selects and transitions between these pre-prepared values, which enhances adaptability while avoiding the need for complex real-time calculations.
Solution Approach 2:
The patent changes the target distance parameter in discrete steps based on lane change detection. The system switches from using the first target distance to the second target distance through intermediate third target distances, which provides adaptive behavior for different lane positions without requiring complex continuous adjustment mechanisms.
Data Source
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AI summary
Method for the longitudinal guidance of a vehicle (1) in relation to a vehicle (2, 11) traveling ahead by means of an electronic distance control system (3): - longitudinal guidance of the vehicle (1) behind the vehicle (2) traveling ahead directly in front of the vehicle (1) depending on a provided first target distance (6) on a first lane (7) of a roadway (8) with at least two adjacent lanes (7, 9) for traveling in one direction of travel; - determining a second target distance (11) after a lane change of the vehicle (1) from the first lane (7) to a different second lane (9) of the roadway (8) depending on a lateral position of the second lane (9) relative to the first lane (7);and - guiding the vehicle (1) longitudinally to the vehicle in front (2) which is also changing lanes or to another vehicle in front (11) in the second lane (9) travelling directly in front of the vehicle (1) with the distance keeping system (3) depending on the determined second target distance (10);