Metamodel-Based Integration Technology for MultidisciplinaryDesign

* 9700040巴顿该基金为使用元模型的研究提供资金，以允许使用不同的基于计算机的子系统模型进行系统级计算机辅助设计。 元模型是工程产品或子系统性能模型的近似模型。 本研究有以下几个目的：（1） 定义一个体系结构，该体系结构需要适合近似元模型，并集成这些子系统元模型，以允许系统设计备选方案的有效检查;（2）开发给定元模型对于给定设计任务的适当性的有用度量;（3）开发顺序方法来改进元模型的适当性，仅在设计被细化时需要的地方提供额外的准确性;以及（4）在磁悬浮交通设计的应用上测试该方法。 如果成功，这项研究将允许增加复杂的系统，这是服从计算机辅助设计。 对于许多复杂的产品，如飞机，计算机，汽车和电信网络，有必要单独设计子系统，因为集成基于计算机的分析模块以创建整个系统的模型太困难了。 基于元模型的集成技术将允许为整个系统构建快速、近似的模型。 因此，设计人员将能够考虑子系统之间的相互作用，并在更短的时间内以更低的成本开发出性能更好的系统。 这些优势对于在上述市场竞争的美国公司来说尤其重要。 ***

*** 9700040 Barton This grant provides funding for research on the use of metamodels to allow system-level computer-aided design using disparate computer-based subsystem models. Metamodels are approximating models of engineering product or subsystem performance models. The research has several goals: (1) to define an architecture needed to fit the approximating metamodels and integrate these subsystem metamodels to allow efficient examination of system design alternatives; (2) to develop useful measures of the adequacy of a given metamodel for a given design task; (3) to develop sequential methods to improve the adequacy of the metamodel, providing additional accuracy only where it is needed as the design is refined; and (4) to test the methodology on an application to magnetic levitation transport design. If successful, this research will allow increased complexity for systems which are amenable to computer-aided design. For many complex products such as aircraft, computers, automobiles, and telecommunications networks, it is necessary to design subsystems separately because it is too difficult to integrate the computer-based analysis modules to create a model of the entire system. Metamodel-based integration technology will allow the construction of fast, approximate models for entire systems. As a result, designers will be able to consider interaction among subsystems, and develop systems with better performance at lower cost, in a shorter period of time. These advantages will be particularly important to US firms competing in the markets mentioned above. ***