3D Analytical Model of Servovalve Torque Motor Using Reluctance Network

Electrohydraulic servovalves used in various aircraft systems (flight control system, auxiliary power unit, etc.) are a key element in fluid flow and pressure control. This paper presents a 3D analytical modelling method of the electromagnetic performance of servovalves torque motor. This analytical model, based on a reluctance network, allows to quickly evaluate the actuator performance taking into account the complex 3D geometry and the high flux leakage rate. This model enables to reduce the performance analysis time by about 89% compared to the conventional 3D finite element calculation time. This is valuable for the design and optimization of the actuator geometry.