Platooning Control Apparatus Eccentric Braking Collision Avoidance
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Solution Overview
Problem
Platooning vehicles face challenges in maintaining safe inter-vehicle distances, particularly during emergency braking, where external factors like road surface friction changes and vehicle weight can lead to collisions, concentrating impact on preceding vehicles.
Innovation Solution
A platooning control apparatus that determines collision possibilities and performs collision avoidance or braking control based on ABS operation, using road surface slip ratio and grip force to distribute braking pressure and control eccentric braking, thereby reducing the impact of chain collisions on preceding vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If inter-vehicle distance is narrowed to improve fuel economy, then fuel efficiency is improved, but collision risk during emergency braking increases
Solution Approach 1:
The system performs preliminary assessment of collision risk by evaluating road surface friction coefficients, vehicle speeds, and weights before emergency braking occurs. This allows the control apparatus to pre-calculate optimal braking strategies and distribute braking forces appropriately among following vehicles, preventing collision before it happens while maintaining narrow inter-vehicle distances for fuel efficiency
Solution Approach 2:
The system dynamically adjusts braking parameters including braking force distribution, braking pressure, and deceleration rates based on real-time conditions such as road surface friction coefficients, vehicle speeds, and weights. By changing these parameters adaptively, the system maintains safe following distances during emergency braking while allowing narrower distances during normal operation for improved fuel economy
2Reliability
If braking pressure is increased to prevent collision, then collision prevention is improved, but impact on preceding vehicle during chain collision increases
Solution Approach 1:
The system applies different braking forces to different wheels based on their individual conditions and positions. During emergency braking, the control apparatus calculates optimal braking force distribution among left and right wheels, front and rear wheels, and among different following vehicles, based on road surface friction coefficients, vehicle speeds, and weights. This localized quality approach prevents collision while minimizing impact transmission to the preceding vehicle
Solution Approach 2:
The braking system is divided into independent controllable units (individual wheels and individual vehicles in the platoon). The control apparatus can apply braking forces selectively to specific wheels or vehicles based on real-time conditions, allowing precise control of braking force distribution to prevent collision while reducing impact on the leading vehicle
3Ease of operation
If ABS is operated to maintain steering control, then steering capability is improved, but braking distance increases
Solution Approach 1:
The system dynamically adjusts ABS intervention parameters based on road surface friction coefficients, vehicle speed, and weight. On high-friction surfaces, ABS operation is optimized to maintain steering control while minimizing braking distance extension. On low-friction surfaces, the system adjusts ABS thresholds and pressure modulation rates to balance steering capability with stopping distance, preventing collision while maintaining operational control
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively minimizes the impact of chain collisions by optimizing braking pressure and control strategies, reducing the risk of major accidents and ensuring safety during emergency braking in platooning scenarios.
Implementation Method 1
capable of reducing an impact of a chain collision from being concentrated on a preceding vehicle by using a grip force between a tire and a road surface
Data Source
AI summary
A platooning control apparatus, a system including the same, and a method thereof are provided. disclosure The platooning control apparatus may include: a processor configured to determine a possibility of a collision during platooning, and when the possibility of the collision exists, perform collision avoidance control or braking control depending on whether an anti-lock brake system (ABS) is operated; and a storage configured to store data obtained by the processor and an algorithm for driving the processor, wherein the apparatus may calculate a depressurization amount of the braking pressure depending on a vehicle speed, a vehicle weight, and a state of a road surface when the avoidance control is possible during ABS operation, and may control eccentric braking depending on the depressurization amount of the braking pressure, to perform the avoidance control.