Methods for
Early Model Validation
Linköping Studies in Science and Technology Thesis No. 1591
Division of Machine Design
Department of Management and Engineering Linköping University
SE-581 83 Linköping, Sweden www.liu.se
Linköping 2013
Applied on Simulation Models of Aircraft Vehicle Systems
Magnus Carlsson
Methods for Early Model V
alidation
Magnus Carlsson 2013
The work presented in this thesis is focused on development of methodology for early validation of simulation models. This is a key area for enhancing the ability to take model-based design decisions and an enabler for successfully reducing the amount of physical testing without compromising safety. Results from the work include a method supporting model validation by providing means to use knowledge of component level uncertainty for assessment of model top level uncertainty. In addition, the common situation of lacking data for characterization of parameter uncertainties is to some degree mitigated. The method is primarily aimed for early development phases when sufficient system level measurement data for validation purposes is unavailable. The method is integrated in a Modelica component library for modeling and simulation of aircraft vehicle systems, and is evaluated in both deterministic and probabilistic frameworks using an industrial application example. Results also include an industrial applicable process for model development, validation, and export, and the concept of virtual testing and virtual certification is discussed.
