关键词: SysML；MBSE；汽车 IP；MagicGrid；需求追溯

Abstract: To address the problems of fragmented requirement management and interdisciplinary collaboration barriers in traditional automotive instrumentation panel (IP) system design, this paper proposes an innovative design method of model-based systems engineering (MBSE) based on systems modeling language (SysML). By constructing a four-layer progressive model architecture spanning "requirements－functions－logic－physical" and integrating the MagicGrid methodology, the IP system achieves closed-loop requirement traceability and verification throughout the entire lifecycle. The paper first elaborates the fundamental concepts of SysML, then establishes a multiphase MBSE design process encompassing requirement elicitation, functional decomposition, logical architecture mapping, and physical implementation based on the development project of IP system for a mass production vehicle. Results demonstrate that compared to traditional design methods, the proposed approach significantly enhances requirement management normalization, improves cross-domain collaboration consistency, and effectively reduces iterative development costs.

Key words: SysML; MBSE; automotive IP; MagicGrid; requirements traceability