Vehicle Platooning Controller Using Radar and V2V Acceleration Data
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional vehicle platooning control techniques fail to minimize the fluctuation range of inter-vehicle distance, leading to instability and reduced fuel efficiency due to the lack of reflection of time delays in measured acceleration.
Innovation Solution
An apparatus and method that corrects the acceleration of a following vehicle by using a combination of estimated acceleration from a leading vehicle, based on accelerator and brake position sensor values, and measured acceleration from a radar sensor, with weighted calculations to control platooning effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If platooning control is based on measured acceleration from radar sensor, then the system can detect acceleration of preceding vehicle, but the time delay in measured acceleration causes increased fluctuation range of inter-vehicle distance and reduced platooning stability
Solution Approach 1:
The system performs preliminary action by estimating the acceleration of the leading vehicle using APS and BPS values before the following vehicle needs to react. This estimated acceleration is transmitted via V2V communication to compensate for the time delay inherent in radar-based acceleration measurement, allowing the following vehicle to anticipate and respond more quickly to leading vehicle actions.
Solution Approach 2:
The patent introduces an intermediary mechanism by using a combination of radar sensor for distance measurement and V2V communication for transmitting estimated acceleration data. This intermediary system bridges the gap between the leading vehicle's actual acceleration and the following vehicle's perception, reducing the impact of time delays in the control loop.
2Device complexity
If platooning control uses measured acceleration without correction, then the control system is simpler, but the fluctuation range of inter-vehicle distance increases and fuel efficiency deteriorates
Solution Approach 1:
The system changes the parameter used for control by combining the measured acceleration from radar with the estimated acceleration from V2V communication. This parameter transformation creates a corrected acceleration value that better represents the actual acceleration of the leading vehicle, enabling more precise platooning control and improved fuel efficiency without requiring a complete redesign of the control system.
3Productivity
If the following vehicle maintains distance based on measured acceleration with time delay, then the control response is slower, but the system requires fewer sensors and processing
Solution Approach 1:
The system implements feedback by continuously receiving estimated acceleration data from the leading vehicle via V2V communication and using this information to adjust the following vehicle's position and speed. This feedback mechanism compensates for the time delay in radar-based acceleration measurement, enabling faster and more accurate control responses while maintaining system simplicity.
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
This approach minimizes the fluctuation range of inter-vehicle distance, enhancing the stability and fuel efficiency of vehicle platooning by accurately reflecting time delays in acceleration measurements.
Implementation Method 1
A radar sensor measures acceleration of a preceding vehicle
Data Source
AI summary
Disclosed are an apparatus for controlling vehicle platooning and a method thereof. The apparatus includes a communication device that receives estimated acceleration from a leading vehicle, a radar sensor that measures acceleration of a preceding vehicle, and a controller that calculates corrected acceleration by using the estimated acceleration received from the leading vehicle and the acceleration (hereinafter, referred to as a measured acceleration) of the preceding vehicle measured by the radar sensor and controls the vehicle platooning based on the corrected acceleration.