Abstract
The paper deals with the model based systems engineering (MBSE) approach, focused on the designing process of propulsion systems for road electric vehicles. In particular, the paper adopts multi-domain Modelling, in accordance with a top-down approach. The process, in fact, starts from the main requirement analysis of the road electric vehicle which is considered as reference. Then, a wide range of parameters, related to the characteristics of propulsion system components and resistance forces, are evaluated to build a parametric model of the propulsion system running on a road. In this way, a procedure for the evaluation of vehicle performance is accomplished within the developed simulation environment. Therefore, the procedure allows all the requirements to be satisfied, under different operative conditions, through an iterative procedure of verification for the imposed parameters. The tested operative conditions are represented in this paper by standard driving cycles, expressed in terms of vehicle speed and autonomy requirement.
Highlights
Even if the process-based problems and design datarelated problems are significant and represent urgent challenges in the designing of mechatronic systems, the model based systems engineering (MBSE) approach is needed for adequate and deep methodologies and tools within the “decomposition and definition” axis, especially for “high-level design” and “detailed design” steps
The paper deals with the model based systems engineering (MBSE) approach, focused on the designing process of propulsion systems for road electric vehicles
RFLP stands for Requirements engineering, Functional design, Logical design and Physical design [12] and it is a MBSE approach based on the V-cycle design process of complex engineered systems
Summary
Even if the process-based problems and design datarelated problems are significant and represent urgent challenges in the designing of mechatronic systems, the MBSE approach is needed for adequate and deep methodologies and tools within the “decomposition and definition” axis, especially for “high-level design” and “detailed design” steps In such steps, methodologies and tools are expected to realise the integrated modelling and simulations between different domains [9, 10]. The implementation of the MBSE approach within the commercial CAD/PDM environment CATIAV6, by Dassault Systemes could be considered the method known as RFLP (Requirement/Functional/Logical/Physical) [5] Such method includes multi-domain modelling within Modelica language and, the related software tool is effective in providing integrated-domain design.
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