Automatic Driving Control Device with Dynamic Allowance Range
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Solution Overview
Problem
Existing automatic driving control systems fail to effectively allow driver-intended lane changes during automatic driving, risking vehicles deviating too far from reference trajectories without proper alerting mechanisms.
Innovation Solution
An automatic driving control device that includes a steering detection unit, range setting unit, position determination unit, and alerting unit to allow driver-intended steering within a defined allowance range, alerting the driver when the vehicle approaches a predetermined second range deviation from the reference trajectory.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If driver steering is fully reflected during automatic driving control, then the vehicle can travel according to driver intention, but the vehicle may deviate too far from the reference trajectory
Solution Approach 1:
The system dynamically adjusts the allowance range based on vehicle speed, making the range wider at lower speeds and narrower at higher speeds. This dynamic adjustment allows the vehicle to respond to driver steering inputs while maintaining appropriate trajectory accuracy for each operating condition
Solution Approach 2:
The system changes the parameter of allowance range width based on vehicle speed parameter. By modifying the allowance range parameter according to speed conditions, the system balances driver intention responsiveness with trajectory accuracy requirements
2Ease of operation
If the allowance range for driver steering is widened, then driver manoeuvrability is improved, but the vehicle may travel too far from the reference trajectory
Solution Approach 1:
The allowance range is dynamically adjusted based on vehicle speed, providing wider manoeuvrability at low speeds where larger deviations are safer, and narrower control at high speeds where precision is more critical
Solution Approach 2:
The system changes the allowance range parameter according to vehicle speed parameter, optimizing the balance between driver manoeuvrability and trajectory accuracy for each speed condition
3Manufacturing precision
If the vehicle strictly follows the reference trajectory, then trajectory accuracy is maintained, but driver intention cannot be accommodated
Solution Approach 1:
The lateral position space is segmented into multiple ranges (first range closer to reference trajectory, second range farther away). The system applies different control strategies in each segment, allowing driver intention responsiveness in the first range while maintaining trajectory accuracy in the second range
Solution Approach 2:
Different control characteristics are applied in different lateral position regions. The system provides more flexible driver-intended travel in regions closer to the reference trajectory while enforcing stricter trajectory following in regions farther away
Data Source
AI summary
An automatic driving control device performs an automatic driving control for causing a vehicle to travel along a reference travel trajectory set in a lane in advance. The automatic driving control device reflects the steering by the driver during the automatic driving control in the travelling of the vehicle in a case where the steering by the driver is detected during the automatic driving control by the steering detection unit and when a position of the vehicle in the lane width direction is included in an allowance range, and alerts the driver to the travelling of the vehicle in a case where the steering by the driver is detected and in a case where it is determined that the position of the vehicle in the lane width direction is included in the second range.