Automated Driving Control Unit Maintaining Movement States

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Solution Overview

Problem

Abrupt steering or sudden acceleration/deceleration often occurs when switching from manual driving to automated driving, causing discomfort for drivers.

Innovation Solution

A vehicle control device and method that maintains acquired movement states for a predetermined time or distance after switching to automated driving, smoothly changes speed, and allows lane changes only after a predetermined distance or time, while providing information on lane deviations to the driver.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If automated driving control is immediately activated upon switching from manual driving, then automated driving functionality is achieved, but abrupt steering or sudden acceleration/deceleration occurs causing driver discomfort

Engineering Contradiction:

Improveautomated driving activationVSAvoiddriver discomfort

Core Design Contradiction:

Extent of automationVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary actions by maintaining the movement state acquired just before automated driving activation for a predetermined time or distance. This preliminary maintenance of the manual driving state prevents abrupt changes when automated driving begins, thereby reducing driver discomfort while still achieving automated driving functionality.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If lane change is executed immediately when needed after automated driving starts, then routing efficiency is improved, but abrupt lane change occurs causing driver discomfort

Engineering Contradiction:

Improverouting efficiencyVSAvoiddriver discomfort

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The system delays lane change execution until a predetermined time or distance has elapsed since automated driving activation. This preliminary delay allows the driver to acclimate to automated driving before lane changes occur, preventing abrupt lane changes while still achieving routing efficiency through timely lane changes after the transition period.

Inventive Principle:

Principle #10Preliminary action

3Loss of time

If speed adjustment is immediately applied to reach target speed, then travel time is reduced, but sudden acceleration/deceleration occurs causing driver discomfort

Engineering Contradiction:

Improvetravel timeVSAvoiddriver discomfort

Core Design Contradiction:

Loss of timeVSObject-affected harmful factors

Solution Approach 1:

The system maintains the current speed for a predetermined time or distance after automated driving activation before applying speed adjustments to reach the target speed. This preliminary speed maintenance prevents sudden acceleration or deceleration, allowing smooth transition while still achieving the target speed efficiently after the transition period.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11230290B2Vehicle control device, vehicle control method, and program

Publication Date: 2022.01.25 HONDA MOTOR CO LTD

AI summary

A vehicle control device (1) includes an automated driving control unit (100) configured to execute automated driving of a vehicle and an acquisition unit (124) configured to acquire movement states in a running direction and a lateral direction of the vehicle. The automated driving control unit is configured to execute the automated driving such that the movement states which have been acquired by the acquisition unit before the automated driving has been started are maintained in a predetermined time or a predetermined distance when automated driving has been started by switching from manual driving.