Guiding Principles for the Development of Complex Systems

Enhanced Systems Engineering Management through Design/Requirements Representations Connected by Mappings and Traceability Figure 1 shows the primary tracks of traceability for the development of a system-level product. Figure 1. Traceability Mappings for the Development Pathway, Goals/Scenarios through Eystem Evaluation. For system-level design, traceability begins with the connnection of goals and scenarios with use cases. It links the requirements and specifications with models of system behavior, system structure, and procedures for system evaluation. Management of Complexity through Orthogonalization of Design Concerns Emphasize function-architecture co-design. System design alternatives are created by mapping models of system behavior onto tentative system structures. System evaluation and ranking/optimization procedures eliminate the inferior solutions. Figure 2. Evaluation, Ranking, Optimization and Trade-Off Analysis for System Design Alternatives In the design of complex engineering systems, "orthogonalization of concerns" simplifies the difficulty in exploring the space of design alternatives.

Section 5-2: April, 2003.