Steering Suppression Control for Automatic Lane Changes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current driving assistance systems cause discomfort to drivers by triggering unnecessary lane departure warnings during automatic lane changes initiated through steering operations, as they interfere with steering suppression controls like LDW and RDM.
Innovation Solution
A driving assistance device with a recognition section, lane change determination section, automatic lane change controller, torque sensor, and steering suppression controller that allows automatic lane changes based on steering inputs, suppressing steering suppression control when a predetermined steering torque is detected, thereby preventing unnecessary warnings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If steering suppression control (LDW/RDM) is executed during automatic lane change, then lane departure warning functionality is provided, but unnecessary warnings are produced causing driver discomfort
Solution Approach 1:
The steering suppression controller dynamically adjusts its control state based on real-time detection of steering torque. When steering torque exceeds the predetermined threshold, the controller suspends steering suppression control; when torque falls below the threshold, normal control resumes. This dynamic adaptation eliminates unnecessary warnings during intentional lane changes while maintaining safety functionality.
Solution Approach 2:
The system changes the operational parameter of steering suppression control based on steering torque magnitude. By monitoring steering torque as a key parameter and comparing it against a predetermined threshold, the system transitions between active suppression control and suspended control states, thereby preventing harmful warnings during driver-initiated lane changes.
2Adaptability or versatility
If automatic lane change control is enabled during steering operation, then lane changing capability is improved, but interference with steering suppression control occurs
Solution Approach 1:
The steering suppression controller implements dynamic state transitions based on steering torque detection. During steering operations exceeding the threshold, the controller automatically suspends steering suppression control to allow automatic lane change execution. This dynamic behavior enables both lane changing capability and steering suppression reliability to coexist without interference.
Solution Approach 2:
The system performs preliminary detection of steering torque before executing lane change maneuvers. By detecting steering torque in advance and comparing it against the predetermined threshold, the system proactively suspends steering suppression control to prevent potential interference, ensuring reliable automatic lane change execution.
Data Source
AI summary
An Road Departure Mitigation (RDM) controller executes RDM control (steering suppression control). However, the RDM controller does not execute RDM control in cases in which lane changing has been determined to be possible by a Lane Change (LC) determination section and a torque sensor has detected a steering input of a predetermined amount or greater.