Multi-User Steer-By-Wire Control With Priority Switching

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Solution Overview

Problem

Existing vehicle steering technologies require mechanical structures for connection, limiting the flexibility in steering wheel placement and preventing multiple steering wheels from being used effectively.

Innovation Solution

A vehicle steering control system that transmits steering intentions through wired or wireless signals, eliminating mechanical mechanisms and allowing for flexible steering wheel placement, with a control module synchronizing the steering wheel angle with the wheel angle using sensors and drive units.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If mechanical structures are used for steering wheel connection, then steering control can be implemented, but the steering wheel position cannot be freely arranged and multiple steering wheels cannot be used

Engineering Contradiction:

Improvesteering wheel position flexibilityVSAvoidmechanical connection structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent replaces the traditional mechanical connection between the steering wheel and steering mechanism with an electrical control system. The steering wheel is electrically connected to the control module, which processes steering signals and controls the steering mechanism accordingly. This substitution eliminates the need for complex mechanical linkages, enabling flexible steering wheel positioning and support for multiple steering wheels without proportional increases in mechanical complexity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If the steering wheel is disconnected from the wheels mechanically, then flexible arrangement is possible, but the rotation angle synchronization cannot be ensured

Engineering Contradiction:

Improvesteering wheel arrangement flexibilityVSAvoidrotation angle synchronization

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent employs feedback mechanisms where the control module continuously monitors the steering wheel rotation angle and the wheel rotation angle, comparing them to ensure synchronization. The control module adjusts the steering mechanism based on this feedback to maintain accurate angle correspondence, even when the steering wheel is mechanically disconnected and positioned flexibly within the vehicle cabin.

Inventive Principle:

Principle #23Feedback

3Loss of information

If wired signals are used for steering control, then steering intention can be transmitted, but the system requires complex wiring

Engineering Contradiction:

Improvesteering intention transmissionVSAvoidwiring structure

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The control module serves multiple functions: it processes steering signals from the steering wheel, controls the steering mechanism, and ensures angle synchronization. By consolidating these functions into a single electronic control unit, the patent reduces the need for separate wiring systems for each function, simplifying the overall wiring structure while maintaining complete steering intention transmission capability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12612105B2Vehicle and vehicle steering control system and method

Publication Date: 2026.04.28 BYD CO LTD

AI summary

A vehicle steering method is provided for a vehicle having a plurality of steering wheels operated by a plurality of users. The method includes obtaining steering information from the plurality of steering wheels of the plurality of users; obtaining priority information of the steering wheels of the corresponding plurality of users; and in response to a user of a steering wheel with a highest priority operates to steer the vehicle, reading the steering information of the steering wheel with the highest priority.