Abstract
The traditional document-based system engineering method used in EMU design progress has the disadvantage of inconsistent information, incorrect version and poor readability. In some industrial fields, model-based systems engineering (MBSE) methods have been widely developed and applied in recent years. Alstom and Bombardier have also attempted to adopt MBSE methods in their rolling stock product design to improve design quality, improve efficiency and reduce development risk. An attempt to design EMU based on the MBSE approach in China was introduced, taking the door control system as an example. The design is divided into three stages including requirement analysis, function breakdown and system architecture generation, which are interrelated with four design loops. The requirement and use case model, function model, as well as logical and physical architecture model of the door control system were built with SysML. Nine kinds of diagrams represent various view of the model, demonstrate the applicability of the MBSE method in the EMU designing. The application of SysML and Modelica in system modeling and strengthening MBSE is prospected.
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