Convoy Steering Control for Smooth Obstacle Avoidance
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Solution Overview
Problem
In platooning systems, subsequent vehicles often undergo sudden steering to avoid obstacles, mirroring the lead vehicle's actions, which can lead to collisions due to abrupt steering maneuvers.
Innovation Solution
A platooning system where vehicles communicate steering information, allowing subsequent vehicles to anticipate and avoid collisions by controlling their steering angles smoothly when the lead vehicle suddenly steers to evade obstacles, using a self-driving controller that receives and processes steering data to adjust their paths accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the subsequent vehicle executes sudden steering to avoid obstacles by mirroring the lead vehicle's actions, then collision avoidance is achieved, but vehicle stability deteriorates and collision risk increases due to abrupt steering maneuvers
Solution Approach 1:
The system detects sudden steering of the lead vehicle in advance and triggers preliminary collision avoidance control for the subsequent vehicle. This preliminary action allows the subsequent vehicle to avoid collisions through controlled steering adjustments rather than abrupt mirror-image steering, thereby maintaining vehicle stability while achieving collision avoidance.
2Reliability
If the subsequent vehicle mirrors the lead vehicle's sudden steering to avoid obstacles, then obstacle avoidance is achieved, but steering smoothness deteriorates due to abrupt steering angle changes
Solution Approach 1:
The system performs preliminary detection of lead vehicle steering and activates collision avoidance control before the subsequent vehicle would need to execute mirror steering. This timing allows for smoother, more controlled steering adjustments that avoid abrupt angle changes while still achieving obstacle avoidance.
3Reliability
If the subsequent vehicle executes abrupt steering maneuvers to avoid obstacles, then collision avoidance is achieved, but passenger comfort deteriorates due to sudden vehicle movements
Solution Approach 1:
By detecting lead vehicle steering and activating collision avoidance control in advance, the system enables the subsequent vehicle to execute smoother steering maneuvers. This preliminary action timing ensures that obstacle avoidance is achieved through controlled movements rather than abrupt steering, thereby maintaining passenger comfort.
Data Source
AI summary
A convoy travel system includes a plurality of vehicles and is configured such that the plurality of vehicles form a convoy and travel. The plurality of vehicles include a preceding vehicle and following vehicles configured so as to follow the preceding vehicle by means of automatic driving. The preceding vehicle is equipped with a steering information acquisition unit configured so as to acquire steering information pertaining to steering of the preceding vehicle, and a transmission unit configured so as to transmit the steering information to the following vehicles. The following vehicles are equipped with a reception unit configured so as to receive the steering information, and an automatic driving control unit configured so as to begin a steering angle control for avoiding a collision with an obstruction when the steering information indicates the execution of emergency steering for avoiding a collision with the obstruction.