Electromechanical relay
2D model of an electromechanical relay.

Download model archive (relay.zip) 
Additional information
This is a 2D model of a linear actuator ^{[1]}^{[2]}. It comprises a yoke, two permanent magnets, two coils and a mover. The yoke and the mover are made of iron. Eddy currents in the magnets and in the laminated yoke and mover are neglected. The permanent magnets constitute a magnetic lock that keeps the mover either in the upper or lower position tending to diminish the residual airgap. The mover is moved down or up by applying a voltage pulse to one of the coils. The commutation is facilitated by two springs.
To run the example, simply open relay.pro in Gmsh.
References
 ↑ R. V. Sabariego, J. Gyselinck, C. Geuzaine, P. Dular, W. Legros, Application of the fast multipole method to the 2D finite elementboundary element analysis of electromechanical devices, COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 22(3):659673, 2003.
 ↑ R. V. Sabariego, The fast multipole method for electromagnetic field computation in numerical and physical hybrid systems, Ph.D. thesis, University of Liège, 2004.
Model developed by R. Sabariego.
