End effects in series-wound linear induction motors

Cogging Force Analysis of Moving Magnet Type Permanent Magnet Synchronous Linear Servo Motor

“…Detent force of permanent magnet synchronous linear motor is permanent magnet magnetic field interacts with the end and cogging of the armature core generate thrust force or tensile force in the state of armature coil without electricity, it always tries to iron core or silicon steel sheet is fixed at a certain location [1]. Detent force includes end detent force and cogging detent force, compared with rotary servo motor, flat type permanent magnet synchronous linear motor primary winding core is a limited length non enclosed structure, its end effect more obvious, superadd cogging effect is caused by stator core slot, will generate a greater detent force, thus affecting the motor stability [2] [3]. In this paper, based on linear motor detent force analysis, study the principles of generate detent force and the method of reduce detent force.…”