复杂工程系统下基于模型的公理化设计方法

Abstract:The axiomatic design approach is integrated with model-based systems design so that a unified systems design approach axiomatic model based systems design (A-MBSD) for complex engineering systems is proposed. Systems behaviors like use cases, activities and interactions is combined in Axiomatic Design forming a new behavior domain to bridge system functions and structures, which enables the mapping relations among requirements-functions-behaviors-structures represent the whole design process explicitly and effectively. In A-MBSD, designers are not only able to describe the evolvement of a system design process by “Z” mapping among different design domains, but also identify conflicts between design parameters by analyzing the coupling of the system using the Independence Axiom. To maintain the consistency of system models, the A-MBSD modeling profile is constructed through the SysML stereotypes extension mechanism. The result of a Forest Fires Satellite Monitoring and Control System (FFSMCS) design shows that the new behavior domain improves the reliability of the design matrix, model-based technology enhances the unity of the system model and enables designer understand the coupling of a system design.