Vehicle Control Device Speed Gap Threshold Adaptation
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Solution Overview
Problem
Conventional vehicle control systems for automated driving lack the ability to adjust driving control effectively in situations requiring specific driving interventions, such as when there is a gap between the vehicle's speed and the speed limit or neighboring vehicles, leading to inadequate control adjustments.
Innovation Solution
A vehicle control device and method that includes a recognizer to assess the surrounding situation and a driving controller to adjust steering and acceleration/deceleration, assigning tasks to the vehicle's occupant based on speed differences between the vehicle, speed limits, and neighboring vehicles, with dynamic threshold adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If constant-speed travel control is canceled when conditions are satisfied, then the vehicle can respond to speed discrepancies, but the inherent degree of driving control cannot be adjusted as necessary in situations requiring driving control
Solution Approach 1:
The system dynamically adjusts the degree of driving control by switching between automated control and manual control based on detected speed discrepancies. When a gap exceeds the threshold, the system transitions from constant-speed travel control to requiring occupant intervention, creating a dynamic control system that adapts to real-time conditions rather than maintaining a fixed control mode
Solution Approach 2:
The system changes the control parameter by introducing a speed gap threshold that determines when automated control should be adjusted. By monitoring the parameter of speed difference between the host vehicle and reference speed (speed limit or neighboring vehicle speed), the system modifies its control behavior when this parameter exceeds the threshold value
2Reliability
If the system monitors speed gap between host vehicle and speed limit/neighboring vehicle, then driving control can be adjusted appropriately, but requires continuous monitoring and task assignment to occupant
Solution Approach 1:
The system implements feedback by continuously monitoring the speed gap between the host vehicle and the reference speed, and using this information to determine when occupant intervention is needed. The recognizer detects the speed discrepancy and provides feedback to the driving controller, which then assigns tasks to the occupant when the gap exceeds the threshold, creating a closed-loop control system that improves reliability through active monitoring
Solution Approach 2:
The system applies partial action by not requiring constant occupant engagement, but only intervening when the speed gap exceeds the threshold. This selective approach to task assignment avoids unnecessary occupant burden while maintaining safety by activating control adjustments only when genuinely needed, rather than requiring continuous manual oversight
Data Source
AI summary
A vehicle control device includes a recognizer 130 which recognizes a surrounding situation of a host vehicle and a driving controller 140 and 160 which executes driving control by controlling one or both of steering and acceleration/deceleration of the host vehicle on the basis of the surrounding situation recognized by the recognizer, wherein the driving controller assigns predetermined required tasks to an occupant of the host vehicle to execute the driving control when there is a gap of a threshold value or more between first speed information determined from at least one of a traveling speed of the host vehicle and a target speed and second speed information determined from at least one of a speed limit in a lane in which the host vehicle is traveling and a speed of a neighboring vehicle traveling around the host vehicle.