Brake Torque Lane Maintenance for EPS Compatibility

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional lane maintenance systems using Electric Power Steering (EPS) can confuse drivers and are limited to vehicles equipped with EPS, as they rely solely on steering control to prevent lane departure.

Innovation Solution

A lane maintenance control method that recognizes lane information, calculates a target moment based on look-ahead distance, and applies brake torque to wheels to steer the vehicle back into the lane, distributing torque differently between left and right wheels to maintain lane position, and adjusts based on turn signals and driver input.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If steering control using EPS is used for lane maintenance, then the vehicle can be assisted to remain in lane, but the system is limited to vehicles equipped with EPS and may confuse the driver

Engineering Contradiction:

Improvelane maintenance effectivenessVSAvoidvehicle compatibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent applies brake torque to wheels for lane maintenance instead of relying on EPS steering control, making the system universally applicable to all vehicles regardless of whether they are equipped with EPS. This multi-functional approach uses the braking system to achieve both stopping and directional control functions

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

Instead of using steering control to maintain lane position, the patent inverts the approach by using brake torque application to change vehicle direction and maintain lane position. This alternative method avoids driver confusion while achieving the same lane maintenance objective

Inventive Principle:

Principle #13The other way round (Inversion)

2Reliability

If steering control using EPS is used for lane maintenance, then the vehicle can be assisted to remain in lane, but the system may confuse the driver

Engineering Contradiction:

Improvelane maintenance effectivenessVSAvoiddriver clarity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent inverts the conventional approach by using brake torque instead of steering control for lane maintenance. This alternative method provides clearer feedback to the driver through brake application rather than steering assistance, eliminating driver confusion while maintaining lane position effectiveness

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent introduces brake torque as an intermediary mechanism to achieve lane maintenance. By applying brake torque to specific wheels, the system generates a moment that changes vehicle direction without directly interfering with steering control, providing clearer operational feedback to the driver

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS8543292B2Lane maintenance control method

Publication Date: 2013.09.24 HL KLEMOVE CORP

AI summary

Disclosed herein is a lane maintenance control method to control a vehicle to travel while accurately remaining in a given lane. The lane maintenance control method performs brake steering control in which, when a vehicle departs from a lane, a brake torque is applied to wheels of the vehicle close to the lane to generate an appropriate moment for lane maintenance, which allows the vehicle to finally move in an opposite direction of a direction in which the vehicle departs from the lane, resulting in accurate lane maintenance.