Finally, we come to validation. Validation is too often overlooked as a job that falls on the design side of the fence. However, validation is essential to any model to ensure that it matches the design itself.
When it comes to large-scale systems, the design changes also become larger scale. As such, one can not afford to spend time both on updating the model to match the changes as well as revalidating the entire system. This drives the need for the engineering software to support many methods of validation that are easily compared against previous validations and engineering baselines.
eXpress’ solution to the validation problem is multi-faceted. First, keeping the engineer on track throughout their change process is done through an integrated error-checker. This helps notify the engineer immediately of definition problems before time is wasted solving problems that show up on dependent layers of information. Second, eXpress provides the most extensive reporting available. Reports have subreports, which have subreports, etc. This allows data drill-down into any aspect of the design.
It is the most subtle of restrictions in a tool that make it less scalability. Unfortunately for many, these restrictions are only found after significant investment into a particular tool or methodology. As a result, thorough research and a proven track-record is critical in tool selection. The superficial features that are inherent to any group of tools that attempt to solve a problem are not the ones that will determine its ultimate success.
eXpress has long been recognized for its extensive ability to support trade studies. When performing Trade studies, unique problems are encountered due to the number of design changes that must be rapidly performed in conjunction with assessments.
With the most extensive assessment capabilities, eXpress provides more reports in both quantity and depth of information.
The import from Excel can be used to quickly bring entirely different sets of attributes into eXpress. This feature is extremely useful when working closely with a reliability engineer who is also performing reliability trade-off studies in the tool of their choice.
The data layering approach incorporated into eXpress allows different views of the same data by bracketing the data using subsets and operating modes. In addition, the data layer nearly eliminates other rework when design topology changes are made as part of the trade study effort.
By supporting iterative analysis and design update, eXpress provides an approach where convergence on a solution is predictable and measurable. For trade studies, this is essential in order to know if taking more time will yield an even better result. eXpress provides a good sense of how far down the path of diminishing returns you are. No other approach offers the hybrid levels of detail supported by eXpress such as: