Wheel Slip Feedback Control for Automatic Tire Pressure Adjustment

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Solution Overview

Problem

Existing central tire inflation (CTI) systems require user interaction to adjust tire pressure and do not monitor wheel performance, limiting their ability to optimize tire pressure for improved traction and reduced rolling resistance.

Innovation Solution

A system that includes sensors on vehicle wheels to measure angular acceleration and slip, with a controller adjusting tire pressure automatically based on these measurements to optimize traction and efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If automated sensors and controllers are added to monitor wheel performance and adjust tire pressure, then tire pressure optimization is improved, but device complexity increases

Engineering Contradiction:

Improvetire pressure optimizationVSAvoidsystem complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system enables automatic tire pressure adjustment through sensors that monitor wheel performance parameters (angular acceleration, slip, jerk) and controllers that autonomously regulate pressure without requiring user interaction or external intervention, allowing the system to self-optimize tire pressure based on real-time conditions

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system implements closed-loop feedback by continuously monitoring wheel performance parameters through sensors and using this information to automatically adjust tire pressure via controllers, creating a self-regulating system that optimizes tire pressure based on actual wheel behavior and vehicle conditions

Inventive Principle:

Principle #23Feedback

2Extent of automation

If user interaction is required to adjust tire pressure, then system simplicity is maintained, but productivity and automation are reduced

Engineering Contradiction:

Improveautomated tire pressure adjustmentVSAvoiduser interaction requirement

Core Design Contradiction:

Extent of automationVSEase of operation

Solution Approach 1:

The system eliminates the need for user interaction by implementing automatic tire pressure adjustment through sensors that continuously monitor wheel performance and controllers that autonomously regulate pressure based on real-time data, making the system fully self-operating

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system replaces manual mechanical pressure adjustment with automated electronic control, using sensors to detect wheel performance parameters and electronic controllers to regulate tire pressure, substituting human operation with an automated electromechanical system

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS20250319727A1Wheel Performance Monitoring and Feedback System For Vehicle Control

Publication Date: 2025.10.16 HUTCHINSON SA

AI summary

A system for monitoring wheel performance of a vehicle, the vehicle including a plurality of wheels and a plurality of tires mounted on the plurality of wheels. The system may include a plurality of sensors on the plurality of wheels and a controller operatively connected to the plurality of sensors. The controller may include at least one processor configured to: receive measurements from the plurality of sensors; determine, for each wheel of the plurality of wheels, based on the measurements from a sensor of the plurality of sensors on that wheel, an angular acceleration of that wheel; calculate, for each wheel of the plurality of wheels, based on the angular acceleration of that wheel, an angular jerk of that wheel; and determine, for each wheel of the plurality of wheels, based on the angular jerk of that wheel, an amount of tire slip for that wheel.