Wheel Hub Test Bed Using Virtual Wheel Dynamics
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Solution Overview
Problem
Existing test beds struggle to realistically simulate the interaction of vehicle wheels with a test track road surface during driving operations, which is crucial for testing and optimizing vehicle performance and dynamics.
Innovation Solution
A test bed equipped with a load machine, an actuator, and simulation means that simulate the dynamics of virtual wheels on the wheel hub, allowing for realistic simulation of wheel interaction with a virtual test track and enabling the operation of real test objects under simulated conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a test bed uses virtual components to supplement real test objects, then the completeness of the test system is improved, but the realism of wheel-road surface interaction simulation deteriorates
Solution Approach 1:
The patent creates a virtual copy of the wheel (virtual wheel) that replicates the dynamic behavior and interaction characteristics of a real wheel with the road surface. This virtual wheel model allows the test bed to simulate realistic wheel-road interactions while using virtual components, resolving the contradiction between system completeness and simulation realism.
Solution Approach 2:
The patent introduces an intermediary simulation model that mediates between the real test object and the virtual environment. This intermediary layer translates real wheel hub movements into realistic wheel-road interaction forces, enabling both virtual component supplementation and realistic interaction simulation to coexist.
2Productivity
If a test bed simulates wheel dynamics virtually, then the need for physical prototypes is reduced, but the accuracy of driving operation simulation deteriorates
Solution Approach 1:
The patent replaces the mechanical wheel assembly with a virtual wheel model that computes wheel dynamics through simulation algorithms. This substitution maintains measurement accuracy by using physics-based models that accurately represent wheel behavior, while eliminating the need for physical wheels and prototypes.
Solution Approach 2:
The patent implements feedback loops where simulation results are continuously compared with expected physical behavior, and the virtual wheel model parameters are adjusted accordingly. This feedback mechanism ensures that the virtual simulation maintains high accuracy in representing real driving operations.
Data Source
AI summary
The invention relates to a test bed and a method for testing a real test object in driving operation, wherein the test object has at least one real component of a vehicle which is capable of applying torque to a wheel hub. The test bed comprises a load machine configured to be connected to the wheel hub so as to transmit torque, an actuator configured to generate a relative movement between the wheel hub on the one hand and a vehicle frame supporting the wheel hub on the other, simulation means for simulating the driving operation, wherein the simulation means is configured to simulate a virtual wheel and dynamics of the virtual wheel as if it were arranged on the wheel hub, and control means configured to operate the real test object in consideration of the simulated dynamics of the virtual wheel on the test bed.