公开(公告)号：US3705370A

公开(公告)日：1972-12-05

申请号：US3705370D

申请日：1971-04-15

Applicant: IBM

Inventor： CHAI HI D ,  MILLS STEPHEN H ,  PAWLETKO JOSEPH P ,  PETERS FRANCIS E ,  YOUNG CARL T

IPC: B41J9/38 ,  H01F7/14 ,  H02K33/00 ,  H01F7/08

CPC classification number: H02K33/00 ,  B41J9/38 ,  H01F7/14

Abstract: A magnetic actuator comprises a three-legged magnetic core with an armature pivotally mounted at the middle leg to have portions on either side thereof with an abutting gap relation with one outer leg and an abutting plus a peripheral gap relation with the other. A winding on the one abutting leg provides drive flux, and a winding or permanent magnet on the other leg provides a restore or detent flux between teeth on the armature and core.

公开(公告)号：US3867676A

公开(公告)日：1975-02-18

申请号：US39922573

申请日：1973-09-20

Applicant: IBM

Inventor： CHAI HI D ,  PAWLETKO JOSEPH P

IPC: H02K37/00 ,  B41J19/30 ,  H02K41/03 ,  H02P6/00 ,  H02P25/08 ,  H02K41/00

CPC classification number: H02P25/08 ,  B41J19/305 ,  H02K41/03 ,  H02P6/006

Abstract: The poles of a variable reluctance type linear stepper motor are arranged in an odd plural number of pairs and each pole is provided with two windings. For each pole pair, one winding of the pole of the particular pair is connected in series-aiding relationship with one of the windings of the other pole of the pair. The other two windings of the particular pair of poles are also connected in series-aiding relationship. The series connected windings are selectively energizable in predetermined stepping sequences for single phase, double phase and alternate single and double phase energizing operational modes. As a result, relative motion is provided between the pole structure of the motor and its variable reluctance member. The directions of energization of the respective two series connected windings of each particular pole pair are in opposition with respect to each other. The energization is such that the change of direction of the flux through the poles is minimized between steps, thereby providing a concomitant reduction in electrical and/or heat losses.

Abstract translation: 可变磁阻型线性步进电机的极点以奇数对配置，每个极设有两个绕组。 对于每个极对，特定对的极的一个绕组与该对的另一个极的一个绕组串联连接。 特定对极的另外两个绕组也是串联的关系。 串联的绕组可以按照预定的步进顺序选择性地供电，用于单相，双相和交替的单相和双相通电操作模式。 结果，在电机的极结构和其可变磁阻部件之间提供相对运动。 每个特定极对的相应的两个串联的绕组的通电方向相对于彼此相对。 通电使得通过极的通量的方向的变化在步骤之间最小化，从而提供电和/或热损失的伴随的减少。