Vehicle Trajectory Correction for Adjacent Lane Vehicles
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Solution Overview
Problem
Existing lane keeping assist systems for vehicles are unable to correct the target travel trajectory in a timely manner when an adjacent preceding vehicle is present, leading to a delayed response and discomfort for occupants.
Innovation Solution
A vehicle control device equipped with external sensors and an electronic control unit that detects adjacent preceding vehicles and generates a target travel trajectory to move away from them within the lane width, predicting their lateral position and correcting the trajectory proactively based on environmental information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lane keeping assist system waits for the adjacent preceding vehicle to actually draw a curved path before correcting the target travel trajectory, then the system can accurately respond to the vehicle's actual movement, but the correction timing is delayed causing occupant discomfort
Solution Approach 1:
The system performs preliminary action by acquiring environmental information on the opposite side of the adjacent lane and predicting the lateral position of the adjacent preceding vehicle before it actually changes its path. This allows the host vehicle's target travel trajectory to be corrected in advance, eliminating the delay that causes occupant discomfort while maintaining accurate response to the adjacent vehicle's intended movement.
2Loss of time
If the system acquires environmental information on the opposite side of the adjacent lane and predicts lateral position, then the trajectory correction timing is improved, but the device complexity increases
Solution Approach 1:
The system achieves multi-functionality by using the existing external sensor to serve multiple purposes: detecting the adjacent preceding vehicle, acquiring environmental information on the opposite side of the adjacent lane, and predicting lateral position. This approach improves trajectory correction timing without significantly increasing device complexity, as the same sensor infrastructure is leveraged for multiple detection functions.
Data Source
AI summary
A vehicle control device includes an external sensor configured to acquire environmental information around a host vehicle, and an electronic control unit. The electronic control unit is configured to control the host vehicle so that the host vehicle travels along a target travel trajectory; detect an adjacent preceding vehicle that is traveling in a lane adjacent to a lane in which the host vehicle is traveling; acquire environmental information on a road side or a lane on an opposite side of the lane in which the adjacent traveling vehicle is traveling from the lane in which the host vehicle is traveling; and generate the target travel trajectory of the host vehicle so as to move away from the adjacent preceding vehicle in a width direction of the lane in which the host vehicle is traveling, within a lane width of the lane in which the host vehicle is traveling.