Vehicle Steering Mode Switching With Deviation Feedback

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Solution Overview

Problem

Existing steer-by-wire vehicles do not adequately manage the transition from game operation mode to driving operation mode, leading to potential deviations in steering angle and unsafe vehicle direction changes without notifying the driver.

Innovation Solution

An operation apparatus with a first and second acquirer, a controller, and a notifier that acquires and switches operation modes, and notifies the driver of deviations between game and driving operation states to ensure safe transitions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the operation mode is switched from game operation mode to driving operation mode, then the vehicle can transition to driving state, but the steering angle deviation may cause unsafe vehicle direction changes without driver awareness

Engineering Contradiction:
Improveoperation mode switching capabilityVSAvoidsteering angle accuracy
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The notification device provides feedback to the driver about the deviation between the operation state of the operation member and the actual steering angle. This feedback mechanism allows the driver to be aware of the deviation and make appropriate adjustments, ensuring safe vehicle operation during mode transitions.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs preliminary notification to the driver before the mode transition is completed. By notifying the driver of the deviation in advance, the system allows the driver to prepare for potential steering corrections, preventing unsafe vehicle direction changes.

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If the operation member is used for game operation, then entertainment functionality is provided, but the steering angle control is not updated leading to potential safety issues

Engineering Contradiction:
Improvegame operation functionalityVSAvoidsteering angle information
Core Design Contradiction:
Adaptability or versatilityVSLoss of information

Solution Approach 1:

The notification device compensates for the loss of steering angle information by providing feedback to the driver about the deviation. This ensures that even though the steering angle control is not updated during game operation, the driver is informed of the discrepancy when returning to driving mode.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The notification device acts as an intermediary that bridges the gap between the game operation mode and the driving operation mode. It translates the deviation information into a form that the driver can understand and act upon, ensuring continuous awareness of the vehicle's actual steering state.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Device complexity

If no notification is provided during mode switching, then the system remains simple, but the driver cannot be aware of steering angle deviations causing unsafe operations

Engineering Contradiction:
Improvenotification system complexityVSAvoidunsafe vehicle operation
Core Design Contradiction:
Device complexityVSObject-affected harmful factors

Solution Approach 1:

The notification device provides essential feedback to the driver about steering angle deviations during mode transitions. This feedback mechanism eliminates the harmful factor of unsafe vehicle operation by keeping the driver informed, while adding only the necessary complexity for safety.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS12522237B2Operation apparatus for vehicle
Publication Date: 2026.01.13 SUBARU CORP
  • US12522237B2 patent drawing
  • US12522237B2 patent drawing
  • US12522237B2 patent drawing

AI summary

An operation apparatus for a vehicle includes a first acquirer, a second acquirer, a controller, and a notifier. The first acquirer is configured to acquire, in a driving operation mode, an operation state of an operation member of the vehicle. The second acquirer is configured to acquire, in a game operation mode, the operation state of the operation member. The controller is configured to perform a control on switching of an operation mode. The notifier is configured to notify a driver who drives the vehicle of information on a deviation between the operation state of the operation member acquired by the second acquirer and the operation state of the operation member acquired by the first acquirer, when the controller causes the operation mode to be switched from the game operation mode to the driving operation mode.