Virtual Loading Element for Loaded Wheel Non-Uniformity Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for determining non-uniformities in loaded vehicle wheels, such as radial or lateral forces and runout, require strong forces and bulky apparatuses, making them costly and inefficient.
Innovation Solution
A method and system that simulate loading using a virtual loading element to determine non-uniformities by scanning the wheel's outer contour and applying a predetermined spring rate, allowing for contactless measurement without applying strong forces, thereby reducing apparatus size and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a load roller is used to apply substantial radial force to the wheel during rotation, then radial runout and vibration forces can be measured, but the apparatus becomes heavy and bulky
Solution Approach 1:
The patent creates a virtual copy of the loading element (load roller) through software simulation. Instead of using a physical load roller that requires massive construction, the system digitally replicates the loading effect by applying virtual forces at calculated positions, thereby achieving measurement precision without the weight and bulk of physical apparatus
Solution Approach 2:
The patent replaces the mechanical load roller system with a computational simulation system. The mechanical action of applying substantial radial force through a physical roller is substituted by a virtual loading element that applies forces through software calculations, eliminating the need for heavy mechanical components while maintaining measurement capability
2Reliability
If a load roller is used to apply substantial radial force to the wheel, then loaded wheel conditions can be simulated, but the apparatus becomes bulky and costly
Solution Approach 1:
The patent creates a virtual copy of the loading element (load roller) through software simulation. Instead of using a physical load roller that requires massive construction, the system digitally replicates the loading effect by applying virtual forces at calculated positions, thereby achieving measurement precision without the weight and bulk of physical apparatus
Solution Approach 2:
The patent replaces the mechanical load roller system with a computational simulation system. The mechanical action of applying substantial radial force through a physical roller is substituted by a virtual loading element that applies forces through software calculations, eliminating the need for heavy mechanical components while maintaining measurement capability
3Measurement precision
If strong forces are applied to the wheel during measurement, then accurate loaded wheel data can be obtained, but the apparatus requires massive construction
Solution Approach 1:
The patent creates a virtual copy of the loading element (load roller) through software simulation. Instead of using a physical load roller that requires massive construction, the system digitally replicates the loading effect by applying virtual forces at calculated positions, thereby achieving measurement precision without the weight and bulk of physical apparatus
Solution Approach 2:
The patent replaces the mechanical load roller system with a computational simulation system. The mechanical action of applying substantial radial force through a physical roller is substituted by a virtual loading element that applies forces through software calculations, eliminating the need for heavy mechanical components while maintaining measurement capability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables accurate determination of radial and lateral forces and runout without the need for heavy equipment, allowing for efficient correction of balancing weights and rim/tyre assembly adjustments, thereby mitigating vibration forces and improving vehicle stability.
Implementation Method 1
determining outer contour of at least a portion of the unloaded wheel
Implementation Method 2
a displacement of the determined outer contour caused by the virtual loading element, and a predetermined spring rate associated to the tyre tread
Implementation Method 3
A force required to displace the individual portion of the outer contour to the extent effected by the virtual loading element may be derived from the displacement distance with respect to the unloaded position by means of the predetermined spring rate and Hook's Law
Data Source
AI summary
The invention relates to a method for contactless determining non-uniformities of a loaded wheel, comprising the steps of determining outer contour of at least a portion of the unloaded wheel; simulating loading of the wheel with a virtual loading element bearing against the tire tread for a plurality of rotary positions of the wheel on the basis of the determined outer contour, a displacement of the determined outer contour caused by the virtual loading element and a predetermined spring rate associated to the tire tread; and determining non-uniformities of the loaded wheel using the simulation results.