Autonomous Driving Steering Torque Mode Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing autonomous driving systems face challenges in adjusting steering torque appropriately during lane changes, especially when road conditions are complex or when there is insufficient distance for autonomous lane changes, requiring driver intervention while maintaining lane keep control.
Innovation Solution
An autonomous driving system that includes a lane change determination unit to assess the need for driver intervention, a lane change request unit to notify the driver, and a mode switching unit to switch from a normal steering torque mode to a weak steering torque mode for lane keep control, along with an area switching unit to adjust operational areas based on driver input thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system maintains normal steering torque mode for lane keep control during autonomous driving, then the vehicle maintains stable lane positioning, but it becomes difficult for the driver to perform lane change operations when intervention is needed
Solution Approach 1:
The steering torque mode is dynamically switched between normal and weak modes based on the lane change determination unit's assessment. When a lane change is determined to be necessary, the mode switching unit transitions from normal steering torque mode to weak steering torque mode, making the steering easier for the driver. This dynamic adjustment resolves the contradiction by adapting the steering characteristics to the current operational context.
Solution Approach 2:
The system changes the steering torque parameter from normal level to weakened level when lane change intervention is required. The mode switching unit adjusts the steering torque magnitude based on the determination result, thereby changing the physical parameter of steering resistance to facilitate driver operation while maintaining lane keep control stability when not in lane change mode.
2Adaptability or versatility
If the system requests driver intervention for lane change during autonomous driving, then the driver can perform necessary lane changes, but the steering torque must be reduced which may affect lane keep control performance
Solution Approach 1:
The lane change determination unit dynamically assesses whether a lane change is necessary based on current driving conditions, and the mode switching unit responds by switching between normal and weak steering torque modes accordingly. This dynamic control strategy ensures that lane keep control performance is maintained when intervention is not needed, while enabling driver intervention capability when required.
Solution Approach 2:
The system implements a feedback mechanism where the lane change determination unit continuously monitors driving conditions and determines whether lane change intervention is necessary, then provides feedback to the mode switching unit which adjusts the steering torque mode. This closed-loop feedback ensures that steering torque is appropriately adjusted based on actual lane change needs while maintaining lane keep control performance.
Data Source
AI summary
An autonomous driving system configured to perform an autonomous driving of a vehicle includes a lane change determination unit configured to determine a necessity of an operation intervention for a lane change of the vehicle by a driver of the vehicle during the autonomous driving, a lane change request unit configured to request the driver to perform the operation intervention for the lane change of the vehicle when the lane change determination unit determines that it is necessary to perform the operation intervention for the lane change of the vehicle by the driver, and a mode switching unit configured to switch a steering torque mode for a lane keep control in the autonomous driving from a normal steering torque mode to a weak steering torque mode when the driver is requested to perform the operation intervention for the lane change of the vehicle.