Vehicle Steering Offset Control for Sequential Obstacle Avoidance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle control systems face challenges in detecting and avoiding obstacles far from the vehicle, leading to delayed automatic steering control and insufficient avoidance maneuvers, which can cause anxiety for occupants due to potential collisions.
Innovation Solution
A vehicle control apparatus that includes a determinator to identify additional obstacles on the vehicle's far side and a comparator to adjust the steering offset amount based on the detected intervals, ensuring timely and effective avoidance maneuvers by changing or maintaining the offset amount accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automatic steering control is performed based on detected avoidance target objects, then collision avoidance is achieved, but detection range limitations cause delayed control initiation for distant objects
Solution Approach 1:
The system performs preliminary detection of avoidance target objects at a distance before the vehicle reaches them. When a distant object is detected, the system pre-calculates and prepares the offset amount based on the object's lateral position, so that when the vehicle approaches the object, the avoidance control can be initiated immediately without delay.
Solution Approach 2:
The offset amount is made dynamic rather than fixed. The system continuously adjusts the offset amount based on the real-time lateral position of the avoidance target object. This dynamic adjustment allows the system to optimize the avoidance trajectory for each specific situation, ensuring timely and effective collision avoidance.
2Ease of operation
If offset amount is fixed for automatic steering control, then control simplicity is maintained, but insufficient avoidance occurs when lateral interval to avoidance target is narrow
Solution Approach 1:
The system changes the parameter of offset amount from a fixed value to a variable that depends on the lateral position of the avoidance target object. By calculating the offset amount based on the object's lateral position, the system ensures that sufficient avoidance distance is maintained even when the lateral interval to the target is narrow, while keeping the control logic relatively simple.
3Device complexity
If second control for distant avoidance target is initiated after first control ends, then sequential processing is simple, but avoidance timing is delayed causing occupant anxiety
Solution Approach 1:
While the first avoidance control is being executed for a nearby object, the system simultaneously performs preliminary detection and offset calculation for distant avoidance target objects. This preliminary action ensures that when the first control ends, the second control can be initiated immediately without processing delay, reducing occupant anxiety.
Solution Approach 2:
The system maintains continuous monitoring and preparation for avoidance controls. Even during the execution of the first control, the system continues to detect and prepare offset amounts for distant objects. This continuity ensures that there are no gaps in the avoidance process, allowing seamless transition between controls.
Data Source
AI summary
A vehicle control apparatus is provided with: an executor configured to perform an automatic steering control of steering a vehicle so as to go away from an avoidance target object; a determinator configured to determine, during execution of the automatic steering control targeting a first object, whether or not a second object is detected; and a comparator configured to compare a first interval, which is an interval between the vehicle and the first object, with a second interval, which is an interval between the vehicle and the second object. The executor is configured to change the offset amount to an offset amount corresponding to the second object if the second interval is narrower than the first interval, and to maintain the offset amount at an offset amount corresponding to the first object if the second interval is wider than the first interval.