Driving Assistance Control for No-Space Steering Avoidance
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Solution Overview
Problem
Conventional vehicle control systems struggle to perform appropriate operations in varying environmental conditions, particularly when there is no avoidance space to the sides of a target object, leading to difficulties in automatic steering control.
Innovation Solution
A driving assistance device that includes a braking controller and a steering avoidance controller, which perform preliminary operations based on the proximity of a target object and the availability of space to the sides, with multiple stages of braking forces and additional alert mechanisms to handle uncertain or congested conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automatic steering control is added to automatic deceleration control, then the probability of quickly responding to sudden changes in surrounding environment is improved, but when there is no avoidance space to the sides of target object, the control margin is reduced to the same level as vehicles that only perform automatic deceleration control
Solution Approach 1:
The control system dynamically adjusts its behavior based on real-time environmental assessment. When avoidance space is detected, the system activates steering control with preliminary steering operations. When no avoidance space is available, the system switches to deceleration-only mode with enhanced preliminary deceleration operations, making the control margin adaptive to environmental conditions rather than fixed
Solution Approach 2:
The system changes control parameters (steering angle, deceleration rate, timing) based on the detected environmental conditions. By adjusting these parameters according to whether avoidance space exists, the system maintains optimal control margin across different scenarios, resolving the contradiction between having steering capability and adapting to situations where steering is not possible
2Ease of operation
If conventional vehicle control systems perform automatic deceleration control, then they can stop the vehicle when proximity to target object satisfies certain conditions, but they cannot perform appropriate preliminary operations when there is no avoidance space to the sides
Solution Approach 1:
The system performs preliminary operations (steering or deceleration) in advance based on predicted avoidance feasibility. By assessing whether avoidance space exists and executing appropriate preliminary actions, the system prepares the vehicle for optimal collision avoidance or minimization, improving both operation appropriateness and response time
3Reliability
If the vehicle performs steering avoidance control, then it can avoid contact with target object by steering, but this requires sufficient space to the sides which may not be available in congested environments
Solution Approach 1:
The system dynamically determines avoidance feasibility by assessing side space availability and adjusts its control strategy accordingly. When space is sufficient, steering avoidance is activated with high reliability. When space is insufficient (congested environment), the system transitions to deceleration-based collision minimization, maintaining adaptability across different environmental conditions
Data Source
AI summary
A driving assistance device performs a second preliminary operation when a degree of proximity between a target object and a vehicle satisfies a third condition and it is determined that there is no space in which the vehicle is able to proceed after avoidance by the steering is performed in any of tracks to sides of the target object at a time point when the third condition is satisfied, and performs a third preliminary operation when presence of the target object is unknown and tracks to sides of a track on which the vehicle is present are in a congested state.