Design of a permanent magnet actuator for linear and rotary movementsG. Krebs, A. Tounzi, B. Pauwels, D. Willemot and M. F. PiriouEur. Phys. J. Appl. Phys., 44 1 (2008) 77-85DOI: https://doi.org/10.1051/epjap:2008105