Steering Assist Device Redundant Control Arbitration

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Solution Overview

Problem

Current vehicle steering systems lack redundancy and reliability, which affects their availability and performance.

Innovation Solution

A steering assist device and method that includes first and second input-side steering control modules and first and second output-side steering control modules, which arbitrate role assignment and control corresponding steering motors to optimize redundant usage and increase system availability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If redundancy is added to the steering system to improve reliability, then system availability increases, but device complexity increases

Engineering Contradiction:
Improvesystem availabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The steering control system is divided into multiple independent control modules (first steering control module and second steering control module), each capable of independently controlling the steering motor. This segmentation allows redundancy without requiring a completely duplicate system, as each module can function independently to maintain steering capability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system dynamically determines which control module to activate based on real-time operational status. The control module that successfully completes initialization and role assignment arbitration becomes the active controller, while the other remains on standby. This dynamic role assignment optimizes resource utilization and maintains system simplicity while ensuring reliability.

Inventive Principle:
Principle #15Dynamics

2Reliability

If multiple steering control modules are used to ensure redundancy, then system reliability improves, but role assignment arbitration complexity increases

Engineering Contradiction:
ImprovereliabilityVSAvoidrole assignment arbitration complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

Each steering control module performs initialization procedures before actual steering control is required. During initialization, modules determine their operational status and prepare for potential role assignment. This preliminary action simplifies the subsequent role assignment arbitration process, as modules are already in a ready state with their operational capabilities established.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system uses feedback from module initialization status to determine role assignment. Each module reports its initialization state, and based on this feedback, the arbitration process selects the appropriate active module. This feedback mechanism simplifies arbitration by providing clear, predetermined criteria for role assignment rather than requiring complex real-time decision-making.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS12024239B2Steering assist device and method, and steering system
Publication Date: 2024.07.02 HL MANDO CORP
  • US12024239B2 patent drawing
  • US12024239B2 patent drawing
  • US12024239B2 patent drawing

AI summary

The present embodiments relate to a steering assist device and method, and a steering system. The steering assist device comprises: first and second input-side steering control modules for controlling an input-side steering motor so that an input-side instrument connected to a steering wheel is assisted; and first and second output-side steering control modules for controlling an output-side steering motor so that an output-side instrument mechanically separated from the input-side instrument and connected to a wheel is assisted, wherein the first and second input-side steering control modules and the first and second output-side steering control modules arbitrate a role assignment and can control a corresponding steering motor from among the input-side steering motor and the output-side steering motor according to the role assignment arbitration result.