Title :
Finite-element analysis of a brushless PM DC linear motor taking the saturation effects into account
Author :
Casadei, Domenico ; Serra, Giovanni ; Tani, Angelo
Author_Institution :
Dipartimento di Ingegneria Elettrica, Bologna Univ., Italy
fDate :
9/1/1997 12:00:00 AM
Abstract :
This paper is concerned with the analysis of a permanent magnet DC linear actuator composed of a slotless armature and a permanent magnet slider. A two-dimensional finite-element field solution is employed in order to illustrate the effect of iron core saturation on the actuator performance. The available thrust is calculated at any slider position and for any winding current and is compared to the thrust based on a simple linear model. The influence of the stroke length on the thrust variation is also presented
Keywords :
brushless DC motors; electric actuators; finite element analysis; linear motors; machine theory; machine windings; magnetic cores; magnetic fields; magnetic flux; permanent magnet motors; 2-D FEM magnetic field solution; actuator performance; available thrust; brushless PM DC linear motor; finite element analysis; iron core saturation; permanent magnet slider; saturation effects; slider position; slotless armature; winding current; Brushless DC motors; Brushless motors; DC motors; Finite element methods; Hydraulic actuators; Iron; Magnetic analysis; Magnetic cores; Permanent magnet motors; Permanent magnets;
Journal_Title :
Magnetics, IEEE Transactions on
