“…On the other hand, PM stepper motors and PM synchronous motors are widely used as positioning devices because of their ability to provide accurate control over position (Bodson, Chiasson, Novotnak, and Rekowski 1993;Bridges and Dawson 1994;Melkote and Khorrami 1999;Nollet, Floquet, and Perruqueti 2009). Moreover, both of these motors have higher torque to inertia ratio than brushed DC motors; they have no brushes, require less maintenance, are more reliable and have better heat dissipation properties since windings are on the stator (Zribi and Chiasson 1991;Hu, Dawson, Burg, and Vedagarbha 1994;Melkote and Khorrami 1999;Nollet et al 2009).…”