Vehicle Trajectory Adaptation for Cross-Model Compatibility
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Solution Overview
Problem
Existing driver assistance systems for motor vehicles lack the ability to efficiently transfer and adapt vehicle-specific trajectories between different vehicles, leading to potential incompatibilities and uncertainties during maneuvers like parking and navigating through narrow spaces, which can result in collisions or difficulties in reaching target positions.
Innovation Solution
A method where a driver assistance system receives a trajectory from an independent unit, which can be external to the vehicle, and adapts it to the specific vehicle parameters, including wheelbase, turning circle, and contour, to ensure compatibility and minimize steering angle changes, while using environment sensors to analyze and optimize the trajectory for safe navigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a trajectory is recorded by one vehicle and transferred to another vehicle, then the need for repeated path recording is reduced and time is saved, but incompatibilities may arise due to different vehicle parameters such as wheelbase, turning circle, and contour
Solution Approach 1:
The system adapts the transferred trajectory by modifying it according to the receiving vehicle's specific parameters (wheelbase, turning circle, contour). The trajectory is transformed to account for differences in vehicle dimensions and kinematic characteristics, ensuring compatibility while maintaining the original path's efficiency benefits
Solution Approach 2:
A trajectory transformation module acts as an intermediary between the recorded trajectory and the receiving vehicle's execution system. This intermediary processes the trajectory data, applies necessary adaptations based on vehicle parameters, and outputs a modified trajectory that is compatible with the receiving vehicle's characteristics
2Manufacturing precision
If the driver assistance system provides detailed steering instructions for trajectory following, then navigation precision is improved, but the complexity of the system increases
Solution Approach 1:
The driver assistance system is divided into distinct functional modules: trajectory reception module, trajectory adaptation module, and steering instruction generation module. Each module handles a specific aspect of the trajectory following process, improving precision while managing system complexity through functional decomposition
Solution Approach 2:
The system uses pre-recorded trajectories as templates or copies that can be stored and reused. Instead of calculating new trajectories in real-time, the system retrieves and adapts existing trajectory data, reducing computational complexity while maintaining navigation precision through the copying and adaptation mechanism
Data Source
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Figure 3
AI summary
The invention relates to a method for assisting a driver during a driving maneuver, in which, in order for the vehicle to follow a specific trajectory, a driver assistance system gives the driver instructions to make necessary steering adjustments and longitudinally guide the vehicle, or the driver assistance system automatically makes the steering adjustments and optionally guides the vehicle longitudinally. According to the invention, the driver assistance system provides a trajectory which the driver assistance system receives via a communication unit from a unit that is independent of the ego vehicle. Also disclosed are a driver assistance system, a computer program, an independent unit, and a system which are designed to carry out said method.