Lane Change Assist Controller Driver Intent Alignment

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Solution Overview

Problem

Existing driving assist methods perform autonomous lane changes without considering the driver's intention, leading to potential non-compliance with the driver's intentions and unintended lane changes.

Innovation Solution

A driving assist method that determines if a lane change is executed due to the driver's operation and assesses the position index value from the vehicle to a set location, restricting lane change assists in directions away from the set location if the index value is within a certain threshold, ensuring that lane changes align with the driver's intentions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If autonomous lane change control is implemented based on lane classification and traffic rules, then lane change automation is improved, but compliance with driver's intention deteriorates

Engineering Contradiction:
Improvelane change automationVSAvoidcompliance with driver's intention
Core Design Contradiction:
Extent of automationVSReliability

Solution Approach 1:

The system continuously monitors the driver's actual lane change operation and uses this feedback to adjust the autonomous lane change control. When the driver executes a lane change maneuver, the system detects this action and uses it as feedback to determine whether to suppress or allow autonomous lane change, ensuring the control system adapts to the driver's real-time intentions

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system sets a suppression period after detecting driver's lane change operation, during which autonomous lane change is prevented. This preliminary action of suppressing automation temporarily ensures that the driver's intended lane change is not interrupted or conflicted by automated control

Inventive Principle:
Principle #10Preliminary action

2Manufacturing precision

If lane change assist is provided at the final end of lane-change-prohibiting line, then traffic rule compliance is improved, but driver's intention recognition deteriorates

Engineering Contradiction:
Improvelane change positioning accuracyVSAvoiddriver's intention information
Core Design Contradiction:
Manufacturing precisionVSLoss of information

Solution Approach 1:

The system dynamically adjusts the lane change assist behavior based on detected driver operations. When driver lane change operation is detected, the system switches from automatic lane change at the prohibiting line end to suppressing lane change assist, making the system flexible and adaptive to different driving scenarios and driver intentions

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS11548508B2Driving assist method and driving assist device
Publication Date: 2023.01.10 NISSAN MOTOR CO LTD
  • US11548508B2 patent drawing
  • US11548508B2 patent drawing
  • US11548508B2 patent drawing

AI summary

A driving assist method is performed by a controller that performs a lane change assist based on a generated target route. A determination is made as to whether or not the lane change has been executed. Next, it determines whether or not the lane change is in a direction toward a preset location due to a driver's operation when the lane change has been executed. Then, a determination is made as to whether or not a position index value from the host vehicle to the preset location is equal to or less than a first threshold value when the lane change is in a direction toward the preset location due to the driver's operation. The lane change assist in a direction away from the preset location is restricted when the position index value is equal to or less than the first threshold value.