Follower Vehicle Rejoining Control Using Learned Leader Driving Patterns
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Solution Overview
Problem
Follower vehicles in group driving systems face challenges in maintaining group driving when they deviate from the group, especially under changing road conditions and traffic congestion, as they struggle to rejoin the group using normal driving patterns during autonomous driving.
Innovation Solution
An apparatus and method that include an inter-vehicle communication unit, a leader vehicle learning unit, an autonomous drive unit, and a follow-up control unit, which learn and apply the driving patterns of the leader vehicle to enable the follower vehicle to autonomously rejoin the group driving by receiving and storing the leader's driving state and traveling track, including lane change timing, entry steer angle, and entry speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the follower vehicle uses normal driving pattern for autonomous driving, then the autonomous driving can be performed, but the follower vehicle cannot rejoin the group driving when it deviates from the group
Solution Approach 1:
The system performs preliminary learning of the leader vehicle's driving pattern during normal group follow-up driving. The follower vehicle stores driving state information (steering angle, acceleration, braking) and traveling track data in advance, so that when deviation occurs, the pre-learned pattern can be immediately applied to enable quick rejoining of the group driving.
Solution Approach 2:
The follower vehicle creates a copy of the leader vehicle's driving pattern by learning and storing its driving states and traveling track. This copied pattern is then applied during autonomous driving to mimic the leader's behavior, enabling the follower to rejoin the group by reproducing the leader's driving characteristics rather than using generic autonomous driving algorithms.
2Adaptability or versatility
If the follower vehicle deviates from group driving due to road conditions or traffic congestion, then the vehicle can adapt to local conditions, but it becomes difficult to maintain group driving again
Solution Approach 1:
The system continuously receives feedback from the inter-vehicle communication unit about the leader vehicle's current driving state and traveling track. This real-time feedback allows the follower vehicle to update its understanding of the leader's behavior pattern dynamically, ensuring that even after deviation due to road conditions or traffic, the follower can reacquire and apply the current driving pattern to rejoin the group effectively.
3Extent of automation
If the follower vehicle autonomously drives based on normal driving pattern, then the driving can be performed independently, but the follow-up performance to leader vehicle deteriorates
Solution Approach 1:
The system dynamically adjusts the autonomous driving control by applying the learned driving pattern of the leader vehicle. Instead of using a static normal driving pattern, the follower vehicle adapts its autonomous driving behavior to match the leader's dynamic driving characteristics (steering, acceleration, braking patterns), thereby maintaining high follow-up performance while operating in autonomous mode.
Data Source
AI summary
The apparatus for controlling group driving according to as aspect may include an inter-vehicle communication unit for communicating with a leader vehicle to receive the driving state and traveling track of the leader vehicle, a leader vehicle learning unit for learning a driving pattern of the leader vehicle based on the driving state of the leader vehicle received through the inter-vehicle communication unit, an autonomous drive unit for autonomously driving the follower vehicle in accordance with the traveling track of the leader vehicle, and a follow-up control unit for receiving the driving state of the leader vehicle to learn the driving pattern of the leader vehicle, controlling the autonomous drive unit to follow the traveling track of the leader vehicle, and performing the autonomous driving by applying the driving pattern of the leader vehicle.