Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
EVALUATION OF PLATOONING CONTROL MODEL TOWARDS SAFETY OF INTENDED FUNCTIONALITY WITH BASIS ON OPERATIONAL DESIGN DOMAIN
Submission Author:
Vinicius Marini , RS
Co-Authors:
Vinicius Marini, Fabrizio Leonardi, Roberto Bortolussi, Agenor Fleury, Flávio Trigo, André de Souza Mendes, Marco Antonio Zanussi Barreto
Presenter: Vinicius Marini
doi://10.26678/ABCM.COBEM2021.COB2021-0111
Abstract
This research aims to understand and explain the implications from the concept of ‘Safety of Intended Functionality’ (SOTIF) as stated in ISO/PAS 21448 to the dynamic modeling of vehicle driving assistance systems. Truck platooning is approached as a dynamic driving task (DDT) by a string of heavy trucks represented in a control model. From the understanding of SOTIF as the safety of a driving automation feature working within specification and system-wide available capability, the operational design domain (ODD) concept stands out as basis for the assessment of vehicle system behavior as directed by the control model, where driving scenarios make building blocks to the system. This case study starts over with addressing the ODD for the platooning task with 110 km-long Dutra motorway span in regard to the location of motorway exits and refueling stations using Google Maps. The platoon is characterized by longitudinal dynamic modeling in combinations of up to 6 vehicles according to National Traffic Council (CONTRAN) regulations, each one hauling a GVW at 57 metric tonnes at 7.5 kW/t minimum power-to-weight ratio. The control model considers longitudinal control, which is run against scenarios where other vehicles tend to place themselves between platoon trucks or cut-through with short distance to the front of one of the vehicles in the convoy. The simulation results indicate the need to regulate control triggers in appropriate distance and anticipation from event triggers, and set adequate control procedures for the considered operational design domain.
Keywords
Vehicle Dynamics, driving strategy, Platooning, Safety, SOTIF
