Power and Energy Balance for Model Validation and Reduction (PEMRA) – Frequency Coupling. Application on Aircraft System Models
Date Published: 2009-11-10
Paper Number:2009-01-3220
DOI: 10.4271/2009-01-3220
Citation:
Marques, J., Garcia, J., Chamaillard, Y., Charlet, A. et al., "Power and Energy Balance for Model Validation and Reduction (PEMRA) – Frequency Coupling. Application on Aircraft System Models," SAE Technical Paper 2009-01-3220, 2009, doi:10.4271/2009-01-3220.
Nowadays, numerical modeling/simulation is an essential tool. It is used in all the design stages in order to improve quality and to reduce costs and time-to-market. As models address increasingly multiphysics and complex phenomena throughout the V-cycle process, modelers are confronted, sooner or later, with the need for model reduction. This paper describes the set-up of a virtual prototyping platform and highlights the interest of integrating energetic aspects, which are used to compute new model reduction criteria. A similar energy approach, “MORA” using “Activity”, is already used by Bond Graphists in order to obtain the “Proper Model” ([
7
] and [
8
]). The methodology presented here (PEMRA: “Power & Energy -based Model Reduction Algorithm”), with new power and energy criteria, makes it possible to obtain a simpler and more accurate reduced model than with MORA methodology, while improving the system's energy information. However, as these methodologies are still totally dependant on the system's excitation signal, a new frequency coupling is proposed to solve this problem.
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