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Extending behavioral models to generate mission-based driving cycles for data-driven vehicle development

Driving cycles are nowadays to an increasing extent used as input to model-based vehicle design and as training data for development of vehicles models and functions with machine learning algorithms. Recorded real driving data may underrepresent or even lack important characteristics, and therefore there is a need to complement driving cycles obtained from real driving data with synthetic data that exhibit various desired characteristics. In this paper, an efficient method for generation of mission-based driving cycles is developed for this purpose. It is based on available effective methods for traffic simulation and available maps to define driving missions. By comparing the traffic simulation results with real driving data, insufficiencies in the existing behavioral model in the utilized traffic simulation tool are identified. Based on these findings, four extensions to the behavioral model are suggested, staying within the same class of computational complexity so that it can still be used in large scale. The evaluation results show significant improvements in the match between the data measured on the road and the outputs of the traffic simulation with the suggested extensions of the behavioral model. The achieved improvements can be observed with both visual inspection and objective measures. For instance, the 40% difference in the relative positive acceleration (RPA) of the originally simulated driving cycle compared to real driving data was eliminated using the suggested model.

Sogol Kharrazi, Marcus Almen, Erik Frisk and Lars Nielsen

IEEE Transactions on Vehicular Technology, Accepted for publication

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Senast uppdaterad: 2019-03-29