Modelling of Nonlinearities and Parasitic Effects in the Electro-Mechanical Command Transmission Path for a Real-Time Flight Simulation Model

Electronic flight control systems of civil utility aircraft typically use electro-mechanical actuators for commanding the control surfaces. Their characteristics and installation can introduce significant nonlinear dynamic effects that have to be simulated by the flight mechanical model that is used for flight control law design and testing. This paper describes an approach on how the nonlinearities and high dynamic effects can be modelled in real time.