Title:
POSITION DETERMINATION SYSTEM FOR LINEAR STEP MOTOR
Document Type and Number:
Japanese Patent JP3957675
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a position determination system for a linear step motor that precisely determines the moving position of a movable element and meets a requirement for the stability of the position control of a closed circuit.
SOLUTION: The position determination system for the linear step motor is characterized by including: a magnetism sensor 20 that obtains a position feedback value, by measuring a variation in flux density at a stator 30 of the linear step motor by using a magnetism induction principle; and a residual magnetic field stabilizer 10 that is arranged at the external periphery of the magnetism sensor 20, so that the magnetism sensor 20 can precisely determine the position of the motor movable element on the basis of a variation of magnetic flux by stabilizing the residual magnetic field value at the stator 30 of the linear step motor.
Inventors:
Xiao Xin Xing
Application Number:
JP2003372773A
Publication Date:
August 15, 2007
Filing Date:
October 31, 2003
Export Citation:
Assignee:
HIWIN MIKROSYSTEM CORP.
International Classes:
H02K41/03; H02K41/00; H02K29/08; H02K37/10; (IPC1-7): H02K41/03
Domestic Patent References:
| JP5199733A | ||||
| JP63249494A |
Attorney, Agent or Firm:
Sakuo Yamaguchi
Yuichi Kasai
Masaharu Yokoyama
Yuichi Kasai
Masaharu Yokoyama