Title:
LINEAR ACTUATOR
Document Type and Number:
Japanese Patent JP2013226038
Kind Code:
A
Abstract:
To provide an improved linear actuator incorporating a stepping motor having high detent torque without associated high vibration during operation.
A linear actuator with a high holding force providing good irreversibility has a high efficiency, low friction resistance screw mechanism and a stepping motor with high magnetic detent torque but a low output torque ripple. The phase torque is modified to minimize the effect of the detent torque on the output torque. Preferably, the stepping motor has asymmetric phases to compensate for the detent torque.
Inventors:
BOURQUI YVAN
MIHA FURLAN
MIHA FURLAN
Application Number:
JP2013090109A
Publication Date:
October 31, 2013
Filing Date:
April 23, 2013
Export Citation:
Assignee:
JOHNSON ELECTRIC SA
International Classes:
H02K37/14; H02K7/06
Domestic Patent References:
| JPH08256465A | 1996-10-01 | |||
| JPS6043060A | 1985-03-07 | |||
| JPH0998563A | 1997-04-08 | |||
| JPS62254653A | 1987-11-06 | |||
| JP2001095192A | 2001-04-06 | |||
| JPH10122322A | 1998-05-15 | |||
| JP2000125534A | 2000-04-28 |
Attorney, Agent or Firm:
Koichi Tsujii
Sadao Kumakura
Fumiaki Otsuka
Takaki Nishijima
Hiroyuki Suda
Hiroshi Uesugi
Sadao Kumakura
Fumiaki Otsuka
Takaki Nishijima
Hiroyuki Suda
Hiroshi Uesugi