2 7 F O C U S ment system which fulfills the need for fast, flexible and secure processes. The software serves as a central platform, from which all team members draw their application data, and where they check in again after processing. The calibration data is automatically subjected to versioning and the engineers can see at one glance which parameter sets are incorporated into which variant. Upon their delivery, work results are automatically checked to prevent any erroneous or overlapping calibrations from being stored in the database. This way data management costs are reduced significantly. AVL CRETA™ supports the application process at Porsche all the way from the very first calibration to the final go-ahead for start of production. At the initial calibration, data-mining algorithms are applied to automatically generate new calibrations from existing datasets. Existing know-how is reused with maximum efficiency. Subsequently, the responsibilities for the parameters are defined among the calibration teams. PROCESS RELIABILITY AND HIGH DATA QUALITY Team members have global access to the data, regardless of whether they work at the test bed or on the proving ground. At defined points in time, the data manager merges the delivered results and checks the overall result. Any conflicts occurring, for example, because different calibration teams require different optimal values, are escalated and resolved. After that, the new data is released in AVL CRETA™ for further processing. This procedure ensures that all team members are always working with the very latest data version. "Thanks to AVL CRETA™ our calibration processes run very smoothly," Michael Rathfelder said. "Now we can retrace which parameters were defined for which vehicle variant anywhere in the world at any given time and are always provided with a complete history. This means we can fully rely on the quality of our data." < merged on a regular basis. Frequently, trade-offs have to be made as certain parameter settings may easily lead to conflicts in interaction with other control systems. In such cases, it is critical to maintain an overview. "In the past, we managed our calibration data manually," Porsche development engineer Michael Rathfelder explained, adding: "Data was saved locally, for example in Excel tables, and shared via e-mail. Administrating the data was extremely time-consuming. Process reliability was not ensured." AVL CRETA™ – MORE THAN JUST A CENTRAL DATABASE So as not to be swamped by data, the chassis developers eventually decided to switch over to a professional calibration data management solution around two years ago. Similar to their powertrain development colleagues, they now work with AVL CRETA™, a member of the AVL Team SUITE™. AVL CRETA™ is an easy-to-use lifecycle manage- AVL CRETA 4™ APPLICATION PROCESS EXAMPLE Project Manager AVL CRETA 4™ Software Supplier Calibration Results Datasets Calibration Engineer Calibration Engineer Basis Dataset Project Manager Calibration Engineer AVL CRETA 4™ helps reducing data management costs by up to 50 percent, and is highly intuitive and easy-to-use.
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