Platooning Control Adjusting Distance for Communication State
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Solution Overview
Problem
In autonomous vehicle platooning, poor communication states between leader and follower vehicles can lead to reduced control accuracy and increased risk of collisions due to delayed signal reception and reduced control precision.
Innovation Solution
A method that adjusts the distance between vehicles and the number of vehicles in a platoon based on the communication state, allowing vehicles with poor communication to travel individually and maintaining safety by adjusting the platooning area and vehicle count to prevent collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If vehicles maintain close distance for efficient platooning, then productivity and energy efficiency improve, but safety deteriorates when communication state is poor due to delayed control signals
Solution Approach 1:
The patent implements dynamic adjustment of inter-vehicle distance based on real-time communication state. When communication quality is high, vehicles maintain close distance for efficiency. When communication quality degrades, the system automatically increases following distance to ensure safety, making the platooning system adaptable to varying communication conditions rather than using a fixed distance.
2Device complexity
If the platoon maintains a fixed number of vehicles, then system complexity is reduced, but adaptability deteriorates when communication state varies
Solution Approach 1:
The system dynamically adjusts the number of vehicles in the platoon based on communication state. When communication quality is high, more vehicles can join the platoon. When communication quality deteriorates, vehicles are automatically removed from the platoon to maintain safety, allowing the system to adapt its size and composition to current communication conditions.
3Use of energy by moving object
If vehicles travel in a tight platoon formation, then energy efficiency improves, but collision risk increases when communication delays occur
Solution Approach 1:
The system implements dynamic inter-vehicle distance adjustment based on communication state. During good communication conditions, vehicles maintain minimal safe distance for energy efficiency. When communication delays or quality degradation are detected, the system automatically increases following distance to provide adequate reaction time, thus preventing collisions while maintaining energy efficiency when possible.
4Measurement precision
If the system maintains strict platooning control, then control precision improves, but system reliability deteriorates when communication state is poor
Solution Approach 1:
The system dynamically adjusts control stringency based on communication state. When communication quality is high, strict platooning control with precise following is maintained. When communication quality deteriorates, the system transitions to a more relaxed control mode with larger safety margins and reduced control precision requirements, ensuring reliable operation under varying communication conditions.
Data Source
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AI summary
The present invention relates to a platooning method in which a leader vehicle of a group provides a control signal and one or more follower vehicles travel according to the control signal. The method includes: determining a communication state of the group; and adjusting a distance between vehicles included in the group by the leader vehicle, based on the communication state.