Semi-autonomous Curb Maneuvering Trajectory Control
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Solution Overview
Problem
Existing driver assistance systems for motor vehicles lack reliability when maneuvering over curbs during parking, as they either result in wheel damage or require multiple, stressful maneuvers, which can lead to unwanted stress and potential damage.
Innovation Solution
A method for semi-autonomous maneuvering of motor vehicles that determines a driving trajectory allowing the vehicle to drive over the curb at a specific angle, optimizing the angle and number of parking moves to minimize damage and efficiently park the vehicle, using sensors to detect the parking space and intervene in steering and acceleration to guide the vehicle along calculated trajectories.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the vehicle drives over the curb at a large angle to prevent wheel damage, then wheel protection is improved, but the number of parking maneuvers increases and productivity deteriorates
Solution Approach 1:
The system dynamically changes the driving angle parameter during the parking maneuver. It starts with a first angle that satisfies the parking condition, then transitions to a second, larger angle when crossing the curb to minimize wheel damage, and finally adjusts to a third angle for precise positioning. This parameter optimization resolves the contradiction by adapting the angle based on the specific phase of the maneuver.
Solution Approach 2:
The patent implements a dynamic parking assistance system that continuously adjusts steering and driving parameters based on real-time sensor feedback. The system transitions between different driving states (approaching, crossing, positioning) with different optimal angles, making the parking maneuver adaptive rather than static. This dynamic approach allows the system to minimize wheel damage while completing the maneuver efficiently.
2Manufacturing precision
If multiple parking maneuvers are used to achieve precise parking, then positioning precision is improved, but the stress on the vehicle and time required increase
Solution Approach 1:
The system performs preliminary detection of the parking space and pre-calculates the optimal driving trajectory before the actual parking maneuver. By using sensors to detect the parking space boundaries and pre-determining the sequence of angles and steering inputs, the system reduces the time needed during the actual maneuver and minimizes unnecessary adjustments, thus reducing stress on the vehicle while achieving precise positioning.
Solution Approach 2:
The parking assistance system continuously monitors the vehicle's position relative to the detected parking space during the maneuver and provides real-time feedback to the control unit. This feedback loop allows the system to make precise, minimal adjustments to achieve accurate positioning in fewer maneuvers, reducing both time loss and vehicle stress while maintaining high positioning precision.
Data Source
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AI summary
The invention relates to a method for the at least semi-autonomous maneuvering of a motor vehicle (1), wherein a parking space (9) is detected (S1) in a surrounding region (7) of the motor vehicle (1) by means of a sensor (4) and a vehicle trajectory (14, 14') for parking the motor vehicle (1) in the parking space (9) is determined, wherein the vehicle trajectory (14, 14') is determined in such a way that the motor vehicle (1) drives over a curb at a certain angle (α1, α2) during the maneuvering along the vehicle trajectory (14 ,14'), wherein the vehicle trajectory (14, 14') is determined additionally in dependence on a number of parking moves, between which the direction of travel of the motor vehicle (1) is changed during the maneuvering along the vehicle trajectory (14, 14').