Fault Tolerant Steering Control for Four-Wheel Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing four-wheel drive vehicles face safety issues when one or more steering systems fail, as the centers of the inscribed circles of the steering angles cannot converge, leading to increased stress on the vehicle and compromised driver safety, with existing technologies only controlling turning direction and angle through braking without managing turning radius.
Innovation Solution
A fault-tolerant apparatus for independent controlled steering in a four-wheel system that includes a control unit capable of adjusting steering angles and vehicle speed to maintain a stable turning radius by calculating and controlling the turning center coordinates, ensuring the tangential lines of all wheels converge on one point, even in a fault environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If braking force control is used to control turning direction and angle, then turning direction and angle can be controlled, but turning radius cannot be controlled simultaneously
Solution Approach 1:
The control unit performs multiple functions by simultaneously controlling both turning direction/angle and turning radius through coordinated adjustment of steering angles and vehicle speed, rather than relying on braking alone for turning direction control
Solution Approach 2:
The system dynamically adjusts both steering angles and vehicle speed in real-time to achieve simultaneous control of turning direction, angle, and radius, transforming a static braking-based control into a dynamic multi-parameter control system
2Reliability
If steering systems fail, then vehicle structure becomes vulnerable to stress, but existing control methods cannot maintain turning radius
Solution Approach 1:
The control unit continuously monitors the operational status of steering systems and adjusts steering angles and speed based on real-time feedback to maintain proper turning radius even when faults are detected
Solution Approach 2:
The system changes operational parameters (steering angles and vehicle speed) adaptively in response to fault conditions to maintain the turning radius and ensure structural safety during steering system failures
Data Source
AI summary
The following description relates to a fault tolerant apparatus for an independent controlled steering in a four wheel system, particularly a fault tolerant apparatus for an independent controlled steering in a four wheel system which can stabilizes a vehicle body through actively adjusting a steering angle of a vehicle and a velocity of a vehicle according to a breakdown environment and a vehicle driving road environment. Further, a fault tolerant apparatus for an independent controlled steering in a four wheel system that may assist a safe driving environment by adjusting a turning function adoptively to a surrounding road environment.