Dynamic optimization of an axisymmetric linear electromagnetic valve actuator

The aim of this paper is to describe the optimization of a permanent magnet linear actuator with soft mover for electromagnetic valves. A 2D numerical model based on finite element method was applied for magnetic field analysis in the electromagnetic actuator. The magnetic force acting on the moving part is computed by the use of local virtual work method. The motion is also taken into account in this work by the movement band technique. For optimal use of the magnet in the operation of the actuator, an optimization approach aims to determine the best dimensions of the magnet for a minimum opposite electromagnetic force acting on the moving part is proposed. The used optimization process is carried out by coupling the finite element magnetic field analysis with genetic algorithm.