Lane-Keeping Control via Transverse Separation and Speed Adjustment
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Solution Overview
Problem
Conventional lane-keeping control systems are inadequate in managing the position of a host vehicle when a large vehicle travels closely, leading to unstable steering and leaning due to transverse wind, which can cause anxiety and instability during travel.
Innovation Solution
A control system that uses image and non-image sensors to calculate transverse separation distances and determine an optimum vehicle position by comparing space widths, outputting a speed control signal to adjust the host vehicle's speed and maintain stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional lane-keeping control systems only control transverse position, then the system complexity is low, but the system cannot handle dangerous situations where large vehicles travel at close distance causing transverse wind
Solution Approach 1:
The patent combines transverse position control (lane-keeping) with longitudinal speed control into a unified control system. The controller integrates functions of both lane-keeping assist and adaptive cruise control, allowing the system to respond comprehensively to large vehicle proximity by adjusting both steering and speed, thereby resolving the technical contradiction between adaptability and complexity.
Solution Approach 2:
The control system is designed to perform multiple functions: it detects large vehicles, calculates transverse wind effects, controls transverse position, and controls longitudinal speed. This multi-functional approach enables the system to handle various driving scenarios involving large vehicles, improving adaptability while managing complexity through integrated design.
2Stability of the object's composition
If the system controls both transverse position and longitudinal speed, then travel stability is improved, but the device complexity increases
Solution Approach 1:
The system performs preliminary detection of large vehicles and calculation of transverse wind effects before the vehicle actually experiences instability. By anticipating the transverse wind impact and pre-adjusting both transverse position and longitudinal speed, the system maintains travel stability proactively, reducing the need for complex reactive control mechanisms.
Solution Approach 2:
The control system continuously monitors the positions of surrounding vehicles, calculates transverse separation distances, and adjusts control outputs based on real-time feedback. This closed-loop control approach ensures travel stability by dynamically responding to changing conditions, while the feedback mechanism itself provides a structured framework that manages system complexity.
3Reliability
If the system calculates transverse separation distances and determines optimum position, then driver anxiety is reduced, but the measurement and calculation complexity increases
Solution Approach 1:
The system introduces the concept of transverse separation distance as an intermediary parameter that mediates between raw sensor data and control decisions. By calculating this intermediate metric, the system translates complex multi-vehicle spatial relationships into a single meaningful value that directly informs control actions, reducing driver anxiety while managing measurement complexity through parameter abstraction.
Data Source
AI summary
The present disclosure relates to an apparatus and method for controlling lane-keeping. An embodiment provides an apparatus for controlling lane-keeping, including a sensing unit configured to recognize lane lines of a driving lane in which a host vehicle travels and configured to sense a plurality of other vehicles traveling in the driving lane or lanes next to the driving lane, a calculation unit configured to calculate a first transverse separation distance between the sensed other vehicles or a second transverse separation distance between the host vehicle and the other vehicles, a determination unit configured to determine an optimum position of the host vehicle within the driving lane by comparing space widths for the calculated first transverse separation distance and the calculated second transverse separation distance, and an output unit configured to output a speed control signal to control a travel speed of the host vehicle so as to have the host vehicle located at the determined optimum position.