On-Road Driving Test Evaluation Using Virtual and Bench Models
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Solution Overview
Problem
Existing vehicle development methods struggle to efficiently create models that comply with on-road driving tests due to non-optimized input parameters and lack of comprehensive judgment across bench test devices and actual tests, limiting the efficiency of compliance with regulations like RDE tests.
Innovation Solution
An on-road driving test evaluation method involving a virtual evaluation step, bench test evaluation step, and on-road driving test step, using a simulation device, first and second bench test devices, and higher-level management to verify and adjust models, ensuring compliance with driving environments and regulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional model creation software is used to create route model, driving environment model, and driver model, then on-road driving test compliance can be achieved, but considerable effort and expertise are required to optimize multiple input parameters
Solution Approach 1:
The patent applies parameter changes by pre-optimizing multiple input parameters for model creation in the on-road driving test evaluation program. Instead of requiring users to manually optimize parameters like route model, driving environment model, and driver model, the program comes pre-configured with optimized parameter sets that ensure compliance with on-road driving tests, thereby reducing complexity while maintaining reliability
Solution Approach 2:
The patent implements preliminary action by pre-configuring the evaluation program with optimized models and parameters before actual use. The route model, driving environment model, and driver model are prepared in advance with optimized settings, eliminating the need for users to perform time-consuming parameter optimization during the evaluation process
2Productivity
If bench test devices are used to imitate on-road driving tests, then test efficiency can be improved, but comprehensive judgment combining bench test results with actual on-road test results cannot be made
Solution Approach 1:
The patent merges bench test evaluation with actual on-road driving test evaluation into a single integrated evaluation program. The system combines the controlled environment of bench tests with the realism of on-road tests, allowing comprehensive judgment that leverages both approaches simultaneously, thereby improving both efficiency and measurement precision
Solution Approach 2:
The evaluation program achieves universality by being capable of performing both bench test evaluation and actual on-road driving test evaluation through the same system. This multi-functional approach allows the same hardware and software platform to handle multiple evaluation modes, eliminating the need for separate systems and enabling comprehensive comparison
Data Source
AI summary
The present invention aims to improve the efficiency of automobile development by front loading the evaluation of an on-road driving test, and comprises a virtual evaluation step of simulating the on-road driving test using a driving environment model which models a driving environment, an operating state model which models an operating state, and a vehicle model which models the actual vehicle; a bench test evaluation step of imitating the on-road driving test by combining a part or all of the actual vehicle, a part or all of the vehicle model, a part or all of the driving environment model, and a part or all of the operating state model, and conducting a bench test of a part or all of the actual vehicle, and an on-road driving test evaluation step of conducting the on-road driving test of the actual vehicle in a real driving environment.