Autonomous Driving Control Band Adjustment for Acceleration Responsiveness

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Solution Overview

Problem

Conventional smart cruise control systems limit user feedback on responsiveness through fixed maximum acceleration values, making it difficult for drivers to feel improved responsiveness when changing control response stages.

Innovation Solution

A vehicle autonomous driving control apparatus that varies a control band for acceleration and deceleration based on a user-set or calculated acceleration/deceleration response stage, using a processor to adjust the control band's upper and lower limits to enhance responsiveness, and stores driving pattern learning results to refine control adjustments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If the maximum values of required acceleration are limited based on fixed response stages, then the control system is simple and stable, but the user cannot feel improved responsiveness when changing control response stages

Engineering Contradiction:

Improveresponsiveness of acceleration/decelerationVSAvoidcontrol system complexity

Core Design Contradiction:

SpeedVSDevice complexity

Solution Approach 1:

The control band is made dynamically adjustable based on the response stage setting. When the user selects a faster response stage, the control band is narrowed to increase responsiveness. This dynamic adjustment allows the system to adapt its control characteristics without requiring complete redesign for different responsiveness levels.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the control band parameter based on the response stage selection. By adjusting the control band width according to the selected response stage (fast, normal, slow), the system achieves different responsiveness levels while maintaining a unified control structure, avoiding the need for multiple fixed control systems.

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If the control band is fixed, then the control system is stable and simple, but the user experience of responsiveness improvement is not distinct

Engineering Contradiction:

Improveuser feedback on responsivenessVSAvoidcontrol precision

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The control band is dynamically adjusted based on the response stage setting. When the user selects a faster response stage, the control band is narrowed to increase responsiveness. This dynamic adjustment allows the system to adapt its control characteristics without requiring complete redesign for different responsiveness levels.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system provides feedback to the user through distinct changes in vehicle acceleration behavior when response stages are changed. By narrowing the control band for faster response stages, the system creates perceptible differences in acceleration responsiveness, allowing users to feel and confirm the responsiveness improvement.

Inventive Principle:

Principle #23Feedback

3Speed

If the maximum acceleration values are varied by response stages, then some responsiveness improvement is achieved, but the user still cannot firmly feel the change

Engineering Contradiction:

Improveacceleration responsivenessVSAvoidinsufficient user perception of improvement

Core Design Contradiction:

SpeedVSObject-generated harmful factors

Solution Approach 1:

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The control band is adjusted asymmetrically based on response stage, with different width adjustments for different stages. This creates distinctly different acceleration characteristics that are easily perceptible to the user, ensuring that the improvement in responsiveness is firmly felt when switching between response stages.

Inventive Principle:

Principle #4Asymmetry

Data Source

PatentUS11254310B2Apparatus for controlling autonomous driving of vehicle, system including the same and method for the same

Publication Date: 2022.02.22 HYUNDAI MOTOR CO LTD

AI summary

A vehicle autonomous driving control apparatus for a vehicle includes: a processor that adjusts a control band for controlling an acceleration and a deceleration of the vehicle, based on a target acceleration and deceleration and an acceleration/deceleration response stage which sets a speed of responsiveness of the acceleration and deceleration of the vehicle to follow the target acceleration and deceleration; and a storage to store a driving pattern learning result calculated by the processor, the target acceleration and deceleration, and the control band.