Vehicle Path Correction Control Between Adjacent Lane Vehicles
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Solution Overview
Problem
Conventional travel control systems that correct a vehicle's steering angle away from an adjacent vehicle may cause occupant discomfort due to insufficient consideration of surrounding vehicle situations, particularly when vehicles are present on both sides of the travel lane.
Innovation Solution
A travel control apparatus that includes a microprocessor and memory, capable of recognizing surrounding situations, generating a target path, calculating a correction amount to move the path away from an adjacent vehicle in the vehicle's width direction, and determining whether to correct the path based on the traveling situation of vehicles in adjacent lanes, thereby optimizing the driving path to reduce occupant discomfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driving path is corrected in a direction away from the other vehicle, then the safety distance from the other vehicle is improved, but the occupant comfort deteriorates when the other vehicle is present in the direction
Solution Approach 1:
The patent applies local quality by differentiating the correction behavior based on the specific spatial location of other vehicles. When a vehicle is detected in the same direction, the system applies a first correction amount, but when vehicles are detected in both directions, the system applies a second correction amount that is smaller than the first. This localized adjustment of correction magnitude based on spatial configuration resolves the contradiction by maintaining safety while reducing unnecessary correction that would cause occupant discomfort.
Solution Approach 2:
The patent implements dynamics by making the path correction amount variable rather than fixed. The correction amount is dynamically adjusted based on the detected surrounding situation - specifically, whether other vehicles are present in one direction or both directions. This dynamic adjustment allows the system to optimize both safety and comfort by applying appropriate correction levels adaptively rather than uniformly.
2Reliability
If the target path is corrected based on one adjacent vehicle, then the avoidance of that vehicle is improved, but the risk of approaching another vehicle on the opposite side increases
Solution Approach 1:
The patent applies feedback by continuously monitoring the surrounding situation and using this information to adjust the path correction. The system detects other vehicles in adjacent lanes and uses this feedback to determine the appropriate correction amount. When vehicles are detected in both directions, the feedback mechanism triggers a reduced correction amount, preventing the subject vehicle from approaching the opposite vehicle while still maintaining adequate distance from the vehicle in the same direction.
Solution Approach 2:
The patent implements preliminary anti-action by proactively reducing the correction amount before the subject vehicle would otherwise approach the opposite vehicle. By detecting the presence of vehicles in both directions in advance, the system preemptively adjusts the correction amount to a smaller value, preventing the harmful effect of approaching the opposite vehicle before it occurs.
Data Source
AI summary
A travel control apparatus includes a microprocessor configured to perform: recognizing a surrounding situation of a subject vehicle; generating a target path of the subject vehicle according to the surrounding situation; calculating a correction amount for correcting the target path in a direction away from a first other vehicle traveling in a first adjacent lane in the vehicle width direction, when the subject vehicle is predicted to pass a side of the first other vehicle or the first other vehicle is predicted to pass a side of the subject vehicle; when a second other vehicle traveling in a second adjacent lane is recognized, determining whether to correct the target path based on a traveling situation of the second other vehicle; and correcting the target path based on the correction amount when the target path is determined to be corrected in the determining.