随着嵌入式系统规模、复杂度和性能需求的提升，嵌入式系统开发的重点从代码级提前到模型级，模型驱动体系结构成为嵌入式系统开发的主流。统一建模语言（uML）和结构分析和设计语言（AADL）是模型驱动系统工程的标准，从方法、扩展机制和应用领域三个方面对两者进行研究和比较，讨论模型分析、模型转换等相关技术。最后，探讨了UML和AADL的发展与研究方向%The focus of embedded system development is shifted from the code level to the model level with the increasing scale, complexity and performance of embedded system and the model-driven architecture stands for a general orientation of embedded system development. UML 和 AADL is a standard of model-driven system engineering, the process,the method, the extension mechanism and the application domain are discussed and the technologies including model analysis, model transformation and code generation are also discussed. Finally, the potential research directions are discussed.
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