Model driven engineering of actuation systems lacks simple and expressive simulation models that are suited to preliminary design. Such models have to include sizing and dynamic simulation capacities. One major challenge is the limitation of the number of input parameters of these models. In this scope, the present paper introduces an approach based on scaling laws that reflect the physical constraints driving a component sizing. The proposed approach is illustrated with two major components of electromechanical transmissions: brushless motor and speed reducer. The established scaling laws are validated by comparison with component manufacturers data. The results are presented and discussed. With the rapid advancing computational technology, virtual prototyping and simulation have a great potential to support efficiently the preliminary design of mechatronic systems. However, the variety and number of required model parameters can become quickly too important to be handled efficiently by the designer. The scaling law approach presented in this paper answers this issue by allowing the development of component models (brushless motors and speed reducers) with a limited number of input parameters. From the reduced number of input parameters, here called definition parameters, the scaling laws provide all the simulation, integration and operational limit parameters required for power sizing, integration, reliability and modal analysis. Moreover, the scaling laws are representative of the state of the art of technology and require a component reference only and no database or large amount of data that are cumbersome to build and to maintain. In order to discuss and verify their validity, the established scaling laws have been compared with manufacturer catalogue data. The obtained models are used to carry out efficient design explorations of electromechanical actuators (e.g., primary flight control of an aircraft). Work is on-going to take advantage of this potential for design optimization problems.
Scaling laws for the simulation based preliminary design of electro-mechanical actuators
Skalierungsgesetze für den simulationsbasierten, vorläufigen Entwurf elektromechanischer Aktuatoren
2011
10 Seiten, 5 Bilder, 2 Tabellen, 32 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
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