Automatic Driving Transition Control Method
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Solution Overview
Problem
Conventional automatic driving vehicle control methods do not consider changes in driving characteristics during the transition from manual to automatic driving, leading to occupant unease.
Innovation Solution
A control method and device that maintain manual driving characteristics for a specified maintaining time before gradually switching to automatic driving characteristics, using a travel state detection unit, individual-matched driving characteristic determination unit, and uneasiness-physical amount model storage to set optimal switching times, thereby reducing occupant unease.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If switching from manual driving to automatic driving is performed using conventional methods, then the switching process is simple and quick, but the occupant feels uneasy due to abrupt changes in driving characteristics
Solution Approach 1:
The patent applies dynamics by making the driving characteristics adjustable and transitional rather than fixed and abrupt. The control device dynamically transitions from manual driving characteristics to automatic driving characteristics over a predetermined period, allowing the system to adapt smoothly to changing conditions and reduce occupant unease during the switching process.
Solution Approach 2:
The patent applies preliminary action by pre-setting a predetermined period before completing the switching process. During this period, the control device prepares for the transition by gradually adjusting driving characteristics, so that when the switching is completed, the occupant has already adapted to the changes, thereby reducing unease.
2Ease of operation
If manual driving characteristics are maintained during automatic driving, then occupant unease is reduced, but the automation level is compromised
Solution Approach 1:
The system dynamically adjusts the degree of automation during the transition period. Instead of maintaining fixed manual characteristics throughout, the control device progressively shifts from manual to automatic characteristics over time, allowing the automation level to increase gradually while maintaining occupant comfort during the transition.
Solution Approach 2:
The patent applies parameter changes by modifying driving characteristic parameters (such as acceleration, deceleration, steering responses) over a predetermined period. The control device changes these parameters from manual driving values to automatic driving values in a controlled manner, balancing comfort and automation performance.
Data Source
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AI summary
Provided is a control method of an automatic driving vehicle switchable between manual driving in which the vehicle is made to travel depending on an operation of an occupant and automatic driving in which driving characteristics in automatic travel are set and the vehicle is made to automatically travel based on the driving characteristics. Manual driving characteristics in the manual driving by the occupant are learned and, when switching from the manual driving to the automatic driving is performed, the automatic driving is performed with the manual driving characteristics maintained for a preset manual characteristic maintaining time (T1). As a result, uneasiness of the occupant can be suppressed.