Bruce A. Lewis

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Architecture Description Languages provide significant opportunity for the incorporation of formal methods and engineering models into the analysis of software and system architectures. A standard is being developed for embedded real-time safety critical systems which will support the use of various formal approaches to analyze the impact of the composition(More)
The Society of Automotive Engineers (SAE) Architecture Analysis & Design Language, AS5506, provides a means for the formal specification of the hardware and software architecture of embedded computer systems and system of systems. It was designed to support a full Model Based Development lifecycle including system specification, analysis, system(More)
An architecture description language (ADL) specifies the structure of an overall system as an assembly of interacting components. ADLs can serve as input to a variety of development tools. We outline the Avionics Architecture Description Language, an emerging SAE standard for describing the architectures of hard real-time, safety-critical embedded computer(More)
This paper describes a software/hardware architectural transformation of a single threaded, cyclic executive based missile application to a multitasking, distributed application using MetaH (Binns and Vestal 1993a, 1993b, 1995). The benefits of this process are: it provides a traceable path to the original language implementation, it achieves data(More)
The emerging Society of Automotive Engineers (SAE) Architecture Analysis & Design Language (AADL) standard is an architecture modeling language for real-time, fault-tolerant, scalable, embedded, multiprocessor systems. It enables the development and predictable integration of highly evolvable systems as well as analysis of existing systems. This paper(More)
The development of embedded systems through models requires the creation of both a platform independent model (PIM) and a platform specific model (PSM). xUML is an extension to UML that adds precise execution semantics to models enabling a full description of platform independent models and the generation of code from them. However, to achieve different(More)