FMI based multi-domain modeling and simulation for extraction and retraction of EHA nose landing gear in Dymola

The Electro-Hydrostatic Actuation (EHA) nose landing gear system is a complex multi-domain system. in order to study the coupling characteristics of EHA system, a multi-domain simulation tool is needed. In this paper, a EHA block diagram based on extraction and retraction of nose landing gear is described and established from the mathematic model, and then completed the modeling and simulation of EHA system in Dymola. A controller of EHA system is exported as the Functional Mock-up Unit (FMU) model from Simulink to Dymola according to the Functional Mock-up Interface (FMI) standard.