Platooning Vehicle Braking Force Control via Distance Prediction
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Solution Overview
Problem
In platooning vehicles, the lack of consideration for individual braking distances leads to potential collisions when vehicles with different weights and braking performances are abruptly braked, especially when a heavy-loaded truck is involved, increasing the risk of accidents.
Innovation Solution
An apparatus and method for controlling the braking force of platooning vehicles by predicting and comparing braking distances, restricting the braking force of a host vehicle based on the maximum braking distance of following vehicles to ensure safe inter-vehicle intervals and prevent collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the host vehicle applies full braking force independently, then the host vehicle can stop quickly, but following vehicles may collide with the host vehicle due to their longer braking distances
Solution Approach 1:
The patent merges the braking control of the host vehicle with the braking characteristics of following vehicles. The ECU determines a restricted braking distance that combines the host vehicle's braking distance with the maximum braking distance of following vehicles, ensuring coordinated stopping that prevents collisions while maintaining efficient braking performance.
Solution Approach 2:
The system performs preliminary action by predicting the braking distances of following vehicles before the host vehicle applies brakes. The ECU uses V2V communication to obtain weight information and predicts braking distances in advance, allowing the host vehicle to adjust its braking force proactively to prevent collisions.
2Reliability
If the host vehicle restricts braking force to match following vehicles' braking distances, then collision risk is reduced, but the host vehicle's stopping efficiency decreases
Solution Approach 1:
The system applies partial action by restricting the braking force only to the extent necessary to match the braking distances of following vehicles. The ECU calculates a restricted braking distance that is greater than or equal to the host vehicle's original braking distance, applying the full braking force when safe and only restricting it when following vehicles have longer braking distances.
3Reliability
If the system considers braking distances of all platooning vehicles, then collision prevention improves, but the system complexity increases
Solution Approach 1:
The patent uses V2V communication as an intermediary to efficiently exchange weight information between vehicles. The ECU acts as a mediator that receives weight information, predicts braking distances, and determines restricted braking distances without requiring direct complex coordination between all vehicles, simplifying the overall system architecture.
Data Source
AI summary
The present disclosure relates to an apparatus for controlling a braking force of a platooning vehicle. The apparatus includes a braking distance predicting unit configured to predict a predicted braking distance of a host vehicle, a braking restriction determining unit configured to determine whether a braking distance of the host vehicle is to be restricted, by comparing the predicted braking distance of the host vehicle with predicted braking distances of following vehicles. The apparatus further includes a braking restriction degree determining unit configured to determine a braking restriction degree of the braking distance of the host vehicle in the case in which it is necessary to restrict the braking distance of the host vehicle.