Adaptive Steering Assist for Vehicle Passing Margin Control
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Solution Overview
Problem
Existing drive assist systems fail to provide appropriate steering assistance as they do not consider the driving characteristics of the driver, leading to inadequate performance in steering control when encountering oncoming vehicles.
Innovation Solution
A drive assist apparatus that includes an avoidance target recognition portion, a steering control portion, a margin detection portion, and a level change portion, which adjusts the steering assistance degree based on the detected distance between the host vehicle and the avoidance target, taking into account the driver's characteristics and road travelability, and optionally outputs an alarm for insufficient margins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If steering control is performed without considering driver characteristics, then the control system is simple, but the steering assistance cannot be appropriately performed
Solution Approach 1:
The system detects the actual margin between the host vehicle and avoidance target during passing, then uses this feedback to adjust the steering assistance degree for subsequent passing events. This closed-loop feedback mechanism enables the system to adapt to driver characteristics and improve assistance appropriateness while maintaining reasonable system complexity through automated learning.
Solution Approach 2:
The system performs preliminary detection of the margin during each passing event, then proactively adjusts the steering assistance degree before the next passing occurs. This preliminary action allows the system to prepare appropriate assistance levels in advance based on previously detected driver behavior patterns, improving responsiveness without requiring complex real-time calculations during critical moments.
2Reliability
If the steering assistance degree is increased for all drivers, then safety is improved, but the intervention becomes excessive for skilled drivers
Solution Approach 1:
The steering assistance degree is made dynamic rather than static, automatically adjusting based on the detected margin from each passing event. The system continuously adapts the assistance level to match the specific driver's behavior patterns, ensuring high safety for inexperienced drivers while maintaining appropriate autonomy for skilled drivers who naturally maintain larger margins.
Solution Approach 2:
The system changes the steering assistance parameter (assistance degree) based on detected margin values. By monitoring whether drivers maintain large or small margins during passing, the system automatically adjusts the assistance degree parameter to optimize both safety and driver autonomy without requiring manual calibration or complex driver profiling.
3Ease of operation
If the steering assistance degree is decreased for drivers who maintain large margins, then driver autonomy is respected, but safety may be compromised for inexperienced drivers
Solution Approach 1:
The system enables drivers to self-service their own safety by allowing natural driving behavior to automatically determine the appropriate assistance level. Inexperienced drivers who maintain small margins receive higher assistance automatically, while skilled drivers who maintain large margins receive lower assistance, with each driver effectively calibrating the system through their own driving patterns without manual intervention.
Data Source
AI summary
A drive assist apparatus includes: an avoidance target recognition portion that recognizes an avoidance target which is a target with which a host vehicle should avoid coming into contact when traveling on a road; a steering control portion that assists steering of the host vehicle at a time of the host vehicle and the avoidance target passing each other; a margin detection portion that detects a margin indicating a distance between the host vehicle and the avoidance target at the time of passing each other; and a level change portion that changes a steering assistance degree of the host vehicle by the steering control portion at subsequent times of passing each other based on the margin detected by the margin detection portion.