Adaptive Cruise Gap Control for Predicted Adjacent-Lane Cut-Ins
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Solution Overview
Problem
Conventional vehicle traveling control systems frequently terminate following inter-vehicle distance control due to frequent cutting-in by other vehicles, leading to rapid deceleration of the host vehicle and discomfort for the driver.
Innovation Solution
A vehicle traveling control apparatus that adjusts the inter-vehicle distance based on specific conditions, such as relative speeds and distances of adjacent lane vehicles, to reduce the likelihood of rapid deceleration and discomfort by either shortening or extending the target inter-vehicle distance as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conventional apparatus terminates the following inter-vehicle distance control when the frequency of cutting-in is high, then the control reliability is improved, but the driver experiences frequent rapid deceleration and discomfort
Solution Approach 1:
The system performs preliminary detection of cutting-in behavior patterns and predicts future cutting-in events before they occur. By identifying trends in cutting-in frequency and vehicle behavior, the system proactively adjusts the target inter-vehicle distance to prevent rapid deceleration, thereby maintaining driver comfort while ensuring control reliability.
Solution Approach 2:
The target inter-vehicle distance is made dynamic rather than fixed. The system continuously adjusts the target distance based on real-time detection of cutting-in frequency and predicted cutting-in behavior. This dynamic adjustment allows the system to maintain reliable control by adapting to changing traffic conditions while preventing driver discomfort through smooth, anticipatory distance modifications.
2Ease of operation
If the conventional apparatus continues the following inter-vehicle distance control even when the frequency of cutting-in is high, then the driver comfort is improved, but the inter-vehicle distance becomes short frequently causing rapid deceleration
Solution Approach 1:
The system detects cutting-in patterns and predicts future cutting-in events before they occur. By performing this preliminary detection and prediction, the system can proactively extend the target inter-vehicle distance in advance, preventing the inter-vehicle distance from becoming too short and avoiding rapid deceleration, thus maintaining both driver comfort and appropriate spacing.
Solution Approach 2:
The system applies preliminary anti-action by extending the target inter-vehicle distance before a cutting-in event actually occurs. This preventive measure counteracts the potential harmful effect of rapid deceleration by ensuring sufficient distance is maintained, thereby protecting driver comfort while continuing the following control.
3Ease of operation
If the target inter-vehicle distance is set at a relatively long distance, then the driver comfort is improved, but the frequency of cutting-in increases
Solution Approach 1:
The system performs preliminary detection of cutting-in behavior patterns and predicts future cutting-in events. This allows the system to intelligently adjust the target inter-vehicle distance based on predicted traffic conditions, maintaining longer distances when cutting-in is unlikely while reducing distance when cutting-in is predicted, thereby balancing driver comfort with reduced cutting-in frequency.
Solution Approach 2:
The target inter-vehicle distance is dynamically adjusted based on real-time detection of cutting-in patterns and predictions. The system transitions between different distance settings depending on the detected traffic situation, maintaining long distances during stable conditions for driver comfort while reducing distances during high cutting-in frequency periods to minimize actual cutting-in events.
Data Source
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AI summary
A vehicle traveling control apparatus determines whether or not a specific situation has been occurring while executing a following inter-vehicle distance control, based on a vehicle speed (Vh) of the host vehicle (HV), a vehicle speed (Vaf) of an adjacent lane rear vehicle (AF), a vehicle speed (Vap) of an adjacent lane preceding vehicle (AP), and a distance (Da) from the host vehicle (HV) to the adjacent lane preceding vehicle (AP). The specific situation is a situation where the adjacent lane rear vehicle is likely to cut in between the host vehicle and an objective vehicle to be followed. The vehicle traveling control apparatus shortens a target inter-vehicle distance when a shortening condition of the target inter-vehicle distance becomes satisfied, and extends the target inter-vehicle distance when an extending condition of the target inter-vehicle distance becomes satisfied, in a case where it determines that the specific situation is occurring.