Abstract
This paper analyses the dynamic performance of flat single-sided Permanent Magnet Linear Synchronous Motors (PMLSMs) employed as actuators, when the alternate motion and the attractive or repulsive forces between the primary and the secondary are controlled simultaneously. The control of the normal forces when the motor is in dynamic operation provides multiples advantages, such as the reduction of friction forces and audible noise, and the minimization of mechanical stresses of guides and supports. Two PMLSM prototypes, one with a ferromagnetic primary core, and another with a non-magnetic armature, were tested under these special operation conditions. A modified Rotor Flux Oriented Control (RFOC) strategy was employed to carry out the tests, and several conclusions were taken. The main purposes of this study are to show the feasibility of the simultaneous control of motion and normal forces employing vector control techniques and to analyse the dynamic response of the prototypes.
