Vehicle Lane Change Control Adapting to Driver Propensity
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Solution Overview
Problem
Current lane change control systems for vehicles primarily focus on safety based on distance from following vehicles, neglecting the driver's propensity, which affects the driving style and lane change execution.
Innovation Solution
A lane change control system that includes a driver mode setting unit, a lane change path generation unit, and a path follow-up controller, which calculates steering angle information based on multiple lane change modes, transverse acceleration, target path angles, and transverse distance paths, incorporating driver propensity and vehicle state information to execute safe and comfortable lane changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lane change control focuses only on safety based on distance from following vehicle, then safety is improved, but driver propensity and driving style are not considered
Solution Approach 1:
The system dynamically adjusts lane change control parameters based on driver propensity by introducing multiple driver mode patterns (aggressive, normal, conservative) that modify lane change time, steering angle, and transverse acceleration characteristics. This allows the system to adapt its behavior to match different driving styles while maintaining safety standards.
Solution Approach 2:
The patent changes key control parameters including lane change time, target transverse distance, transverse acceleration profile, and steering angle based on the selected driver mode. These parameter adjustments enable the system to reflect driver propensity while ensuring safe lane changes by maintaining appropriate safety margins.
2Ease of operation
If lane change time is extended to improve comfort, then driver comfort is improved, but lane change efficiency decreases
Solution Approach 1:
The system provides dynamic adjustment of lane change time based on driver mode selection, allowing extended lane change time for conservative drivers seeking comfort while providing shorter lane change time for aggressive drivers prioritizing efficiency. The transverse acceleration profile is dynamically shaped to ensure comfort regardless of duration.
Solution Approach 2:
Different driver modes utilize different lane change time parameters and transverse acceleration profiles. The system adjusts target transverse distance and steering angle parameters accordingly, enabling comfort-oriented long-duration lane changes when selected by the driver while maintaining efficiency for other modes.
3Adaptability or versatility
If multiple driver modes are added to reflect driver propensity, then adaptability is improved, but system complexity increases
Solution Approach 1:
The system segments driver propensity into distinct driver modes (aggressive, normal, conservative) with predefined parameter sets. This segmentation approach manages complexity by creating discrete, manageable modes rather than continuous adjustment, making the system easier to implement and control while still providing adaptability.
Solution Approach 2:
The lane change control system serves multiple functions by integrating safety monitoring, driver propensity adaptation, and comfort optimization within a unified control framework. The same basic control architecture handles all driver modes, reducing overall system complexity compared to separate systems for each function.
Data Source
AI summary
A lane change control method and system that include a driver mode setting unit that sets a driver's lane change mode based on a lane change mode input from a plurality of lane change modes and a lane change path generation unit that generates a lane change path based on the lane change mode set by the driver mode setting unit, a transverse acceleration of vehicle, a target path angle and a target transverse distance path. In addition, a path follow up controller executes a lane change based on the lane change path by calculating steering angle information that corresponds to the lane change path.