Three case histories of virtual prototypes to support concurrent engineering

The three case histories from Boeing, Schlumberger and Polaroid are contrasting applications of embedded systems that show the value of virtual prototypes and system-level models. We describe each case and provide data on outcomes for each in five categories: methods of justification, measured outcomes (metrics), design methodologies at the tool level, and lessons learned at the tool and organizational levels. Separately, we offer our conclusions for the three cases: (1) We found that complex design requirements are common, but the proposed solutions to the requirements could be modeled in a useful way early in the design process. (2) Virtual prototyping effort was measured in person-years, but the justification of the investment was straightforward. (3) The virtual prototypes strongly supported concurrent engineering methods by making it easier for various disciplines to make contributions early in the design process. (4) Virtual prototyping and system modeling tools should include hierarchy and concurrency, be compatible with an integrated design environment, and have strong usability features. (5) Virtual prototyping is new enough that it will not happen without both management support and well-planned pilot projects