Vehicle Torque Biasing on Deformable Surfaces

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Solution Overview

Problem

Vehicles operating on deformable surfaces such as grass, mud, or sand experience alterations due to tire penetration and traction issues, affecting vehicle operation and surface integrity.

Innovation Solution

A vehicle system with sensors and control units to detect wheel locations and surface deformity levels, adjusting torque distribution to minimize surface alteration by applying torque bias to wheels based on surface type and deformity, using machine learning and real-time data analysis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If vehicle operates on deformable surfaces with normal torque distribution, then vehicle power transmission is effective, but surface alteration occurs due to tire penetration

Engineering Contradiction:
Improvepower transmission effectivenessVSAvoidsurface alteration
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The system dynamically changes torque distribution parameters based on detected surface conditions. When a deformable surface is detected, the control system adjusts torque allocation to wheels, reducing torque to wheels on deformable surfaces and redistributing it to wheels on stable surfaces, thereby preventing surface alteration while maintaining power transmission effectiveness

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The system employs sensor feedback to continuously monitor wheel location and surface deformity levels. This feedback loop enables real-time detection of deformable surfaces and triggers appropriate torque distribution adjustments, creating a closed-loop control system that adapts to changing surface conditions

Inventive Principle:
Principle #23Feedback

2Object-affected harmful factors

If torque bias is applied to wheels on stable surfaces, then surface alteration is minimized, but vehicle stability must be maintained

Engineering Contradiction:
Improvesurface alterationVSAvoidvehicle stability
Core Design Contradiction:
Object-affected harmful factorsVSStability of the object's composition

Solution Approach 1:

The control system dynamically adjusts torque distribution parameters based on real-time surface condition detection. By varying torque bias magnitude according to the severity of surface deformity and vehicle operating conditions, the system prevents surface alteration while maintaining vehicle stability through adaptive parameter modification

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The system implements dynamic torque distribution that continuously adapts to changing surface conditions. Rather than fixed torque bias, the system modulates torque allocation in real-time based on sensor feedback, allowing the vehicle to maintain stability while responding to varying surface deformity levels

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS20260042436A1Systems and methods of vehicle operation to mitigate alteration to deformable surfaces
Publication Date: 2026.02.12 FORD GLOBAL TECH LLC
  • US20260042436A1 patent drawing
  • US20260042436A1 patent drawing
  • US20260042436A1 patent drawing

AI summary

A vehicle that can mitigate alteration caused to deformable surfaces is provided. The vehicle can capture images of the road surface in real-time and determine whether any of its wheels is currently on a deformable surface. In the instance that at least one of the wheels of the vehicle is on a deformable surface, the vehicle determines the deformity level of the deformable surface based on the captured images and based on that data and determines an amount of torque biasing to be applied to one or more wheels that are not on the deformable surface. This reduces or prevents excessive spinning of the wheel that is on the deformable surface while providing more torque to the wheel(s) that have better traction. This helps to preserve the deformable surface and allow the vehicle to traverse the deformable surface and limiting alteration to the deformable surface.