Vehicle Steering Control Device Lane Deviation Prevention
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Solution Overview
Problem
After passing an obstacle, vehicles may deviate from their intended lane due to the lack of driver intervention to maintain steering torque and angle, leading to potential collisions or lane departures.
Innovation Solution
A control device with an electronic control unit that predicts the end timing of steering control and determines if a deviation possibility exists, employing reduction processing by postponing the end timing and setting control amounts to maintain a safe distance from lane boundaries, and notifying the driver to ensure smooth transition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If steering control ends when the vehicle passes the obstacle, then the intervention of the driver in driving operation is minimized and the sense of discomfort is reduced, but the vehicle may deviate from the current traveling lane due to unmaintained steering torque and angle
Solution Approach 1:
The control device performs preliminary action by continuing steering control beyond the passing stage to maintain the vehicle within the traveling lane. The electronic control unit determines whether the vehicle is within the lane and continues control if not, preventing lane deviation before it occurs.
Solution Approach 2:
The control device uses feedback by continuously monitoring the vehicle position relative to the traveling lane boundaries. The electronic control unit determines whether the vehicle is within the lane based on detected position information and adjusts control duration accordingly.
2Reliability
If steering control is extended to ensure lane keeping, then the vehicle stability is improved, but the driver may feel increased intervention and discomfort
Solution Approach 1:
The control device applies partial action by extending steering control only as long as necessary to ensure the vehicle remains within the traveling lane. The electronic control unit monitors lane position and terminates control once the vehicle is properly positioned, avoiding excessive intervention.
Solution Approach 2:
The control device dynamically adjusts the duration of steering control based on real-time vehicle position. The electronic control unit continuously determines whether the vehicle is within the lane and adjusts control termination timing accordingly, making the control duration flexible rather than fixed.
Data Source
AI summary
A control device includes an electronic control unit executes steering control for avoiding a collision with an object that has a possibility of colliding with a host vehicle. The electronic control unit sets a timing when the host vehicle is predicted to pass the object as an end timing of the steering control when the steering control is performed. The electronic control unit determines whether or not a deviation possibility is present when the electronic control unit assumes that the steering control ends at the end timing. The deviation possibility is a possibility of the host vehicle deviating from a current traveling lane accompanying an end of the steering control. The electronic control unit performs reduction processing that reduces the deviation possibility when the electronic control unit determines that the deviation possibility is present.