Pre-Boost Overtaking Control for Smooth and Safe Lane Changes
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Solution Overview
Problem
Existing driving support systems struggle to perform overtaking maneuvers efficiently and comfortably, particularly in scenarios where the ego vehicle needs to adjust its velocity and acceleration rapidly while switching lanes, which can lead to uncomfortable experiences for occupants and potentially dangerous situations if not handled properly.
Innovation Solution
A method for performing pre-boost acceleration prior to overtaking a preceding third party vehicle, which involves detecting third party vehicles on the neighboring driving lane, determining an acceleration profile with a specific acceleration phase, and applying the pre-boost acceleration according to this profile to prepare the ego vehicle for the overtaking maneuver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pre-boost acceleration is performed to increase relative speed for overtaking, then the overtaking maneuver can be completed faster, but it can cause dangerous driving situations if not handled properly
Solution Approach 1:
The system performs preliminary acceleration (pre-boost) before the actual overtaking maneuver is initiated. This allows the ego vehicle to build up speed in advance on the ego lane, so that when the lane change occurs, the relative speed advantage is already established, reducing the time spent in the vulnerable overtaking state
Solution Approach 2:
The acceleration profile is dynamically adjusted based on real-time detection of third party vehicles on the neighboring lane. The system continuously monitors the situation and adapts the acceleration magnitude and duration to maintain safety margins while achieving the desired speed increase for overtaking
2Ease of operation
If the ego vehicle changes from follow mode to overtaking lane mode, then the overtaking maneuver can be executed, but velocity and acceleration adjustments can be perceived as uncomfortable by occupants
Solution Approach 1:
The system employs dynamic transition strategies where the acceleration profile is smoothly adjusted during mode switching. Rather than abrupt changes in velocity or acceleration, the system gradually modifies these parameters to match the new driving mode, reducing jerky movements that would be perceived as uncomfortable by occupants
Solution Approach 2:
The system carefully controls changes in velocity and acceleration parameters during mode transitions. By limiting the rate of change of these parameters and ensuring smooth transitions between follow mode and overtaking mode, the system minimizes uncomfortable sensations for occupants while still achieving the necessary speed adjustments for safe overtaking
3Reliability
If the overtaking maneuver is started erroneously or aborted due to traffic conditions, then safety can be compromised, but velocity and acceleration changes are required which can be perceived as uncomfortable
Solution Approach 1:
The system continuously monitors traffic conditions on the neighboring lane during the overtaking maneuver. If a third party vehicle is detected or conditions change unfavorably, the system provides feedback to abort the maneuver. By detecting such conditions in advance and smoothly transitioning back to follow mode, the system avoids abrupt stops or erratic maneuvers that would cause occupant discomfort
Solution Approach 2:
The system performs preliminary checks and continuous monitoring to prevent erroneous overtaking maneuvers. By detecting unfavorable traffic conditions before initiating the maneuver and continuously monitoring during execution, the system can preemptively avoid situations that would require abrupt corrective actions, thereby preventing both safety issues and occupant discomfort
Data Source
AI summary
The present invention refers to a method for performing pre-boost acceleration prior to overtaking a preceding third party vehicle (34) driving on a road (26) with multiple driving lanes (28, 30, 32) for driving in a forward driving direction (34) with an ego vehicle (10), wherein the ego vehicle (10) is following the preceding third party vehicle (36) on an ego lane (28) with an initial distance (d) to the ego vehicle (10), comprising the steps of detecting third party vehicles (38) on the neighboring driving lane (30), determining an acceleration profile with an acceleration phase for accelerating the ego vehicle (10) compared to the preceding third party vehicle (36) on the ego lane (28) while following the preceding third party vehicle (36), wherein an acceleration of the acceleration phase is determined based on the detection of third party vehicles (38) on the neighboring driving lane (30), a maximum acceleration value and a maximum change of acceleration, receiving a trigger for performing the pre-boost acceleration prior to overtaking the preceding third party vehicle (36) driving on the ego lane (28) using the neighboring driving lane (30), and performing the pre-boost acceleration according to the determined acceleration profile. The present invention also refers to a driving support system (12) for use in an ego vehicle (10) for following a preceding third party vehicle (36), in particular for performing adaptive cruise control, when driving on a road (26) with multiple driving lanes (28, 30, 32) for driving in a forward driving direction (34) of the ego vehicle (10), wherein the driving support system (12) is adapted to perform the method for pre-boost acceleration prior to overtaking a preceding third party vehicle (34) according to the above method.