Co-Simulation Methods for Holistic Vehicle Design: A Comparison 2020-01-1017
Vehicle development involves the design and combination of subsystems of different domains to meet performance, efficiency, and emissions targets set during the initial developmental stages. Before a physical prototype of a vehicle or vehicle powertrain is tested, engineers build and test virtual prototypes of the design(s) on multiple stages across the development cycle. In addition, controllers and physical prototypes of subsystems are tested under simulated signals before a physical prototype of the vehicle is available. Different departments within an automotive company tend to use different modelling and simulation tools specific to the needs of a specific engineering discipline. While this makes sense considering the development of the said system, subsystem, or component, modern holistic vehicle design requires the constituent parts to operate in synergy with one-another in order to ensure system-level optimal performance. Due to the above, the integrated simulation of the models developed in different environments is necessary. This paper reviews the current trends of model integration within the automotive industry. The reviewed model integration methods are evaluated and compared with one another with respect to an array of criteria such as required workflow, software requirements, numerical results, and simulation speed by means of setting up and carrying out simulations on a set of different model integration case studies. The results of this evaluation constitute a comparative analysis of the suitability of each integration method for different automotive design applications. This comparison is aimed towards the end-users of simulation tools, who in the process of setting up a holistic high-level vehicle model, may have to select the most suitable among an array of available model integration techniques, given the application and the set of selection criteria.
Nikolaos Kalantzis, Tom Fletcher, Ahmed Ahmedov, Ruoyang Yuan, Antonios Pezouvanis, Kambiz Ebrahimi, Sina Shojaei, Richard Osborne
Loughborough University, Jaguar Land Rover, AVL UK Ltd.