Vehicle Steering Control Mode Switching for Obstacle Avoidance
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Solution Overview
Problem
Existing vehicle control systems face challenges in effectively avoiding obstacles on the traveling lane, especially when the preceding vehicle's behavior indicates an avoidance action, as they rely primarily on lane recognition and may not adapt quickly enough to changing situations.
Innovation Solution
A vehicle control apparatus that includes detection units (cameras, lidars, and radars) to monitor the vehicle's surroundings, a determination unit to assess the preceding vehicle's behavior, and a control unit to switch between steering control modes from lane maintenance to preceding vehicle following, allowing the vehicle to adapt and avoid obstacles by mimicking the preceding vehicle's avoidance actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the vehicle controls traveling based on white line recognition (first traveling control), then traveling stability is improved, but the ability to avoid obstacles on the traveling lane deteriorates
Solution Approach 1:
The patent implements dynamic switching between two traveling control modes: first traveling control (lane keeping based on white line recognition) and second traveling control (obstacle avoidance by following preceding vehicle). The control system dynamically selects the appropriate mode based on detection results, allowing the vehicle to maintain stability during normal travel while automatically switching to obstacle avoidance when needed, thus resolving the contradiction between stability and obstacle avoidance capability
2Reliability
If the vehicle follows the preceding vehicle's actions (second traveling control), then obstacle avoidance capability is improved, but traveling stability deteriorates due to following staggering or irregular movements
Solution Approach 1:
The system dynamically switches between control modes based on situational needs. During normal travel, it uses first traveling control for stability. When obstacles are detected, it switches to second traveling control for obstacle avoidance. This dynamic approach allows the system to benefit from both control strategies without continuously suffering from the instability of following irregular preceding vehicle movements
3Reliability
If the control system switches between first mode and second mode based on preceding vehicle behavior, then obstacle avoidance capability is improved, but control system complexity increases
Solution Approach 1:
The control system is segmented into distinct functional modules: detection unit for monitoring peripheral status and preceding vehicle behavior, determination unit for analyzing whether predetermined behavior occurs, and control unit for executing mode switching. This modular segmentation makes the complex control logic more manageable and implementable while maintaining high obstacle avoidance capability
Data Source
AI summary
The present invention provides a vehicle control apparatus for performing traveling control of a vehicle, the apparatus comprising: a detection unit configured to detect a peripheral status of the vehicle; a determination unit configured to determine, based on a detection result of the detection unit, whether a preceding vehicle exhibits a predetermined behavior in a vehicle width direction; and a control unit configured to perform steering control of the vehicle, wherein steering control modes of the vehicle include a first mode and a second mode, and wherein in a case where the determination unit determines that the preceding vehicle exhibits the predetermined behavior during the steering control of the vehicle in the first mode, the control unit changes from the first mode to the second mode and performs the steering control of the vehicle in the second mode.