Modeling and Simulation of Redundancy Management of Electro-Hydrostatic Actuator

Electro-hydrostatic actuators are widely used in the aerospace field, they are an important part of aircraft flight controls. This paper presents the redundancy management model of electro-hydrostatic actuators. First, the failure mode of the inverter is analyzed, then the structure layout of the three-redundancy inverter is proposed, and the fault monitoring is realized by a comparative monitoring method. Finally, the redundancy management model is built in Matlab/Simulink. The simulation results show that the redundancy management model can accurately monitor and effectively isolate the inverter faults, which verifies the feasibility and reliability of the model.