Title:
LINEAR SYNCHRONOUS MOTOR CONTROL METHOD AND CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2010/024190
Kind Code:
A1
Abstract:
The objective is to move a movable element smoothly with sensorless vector control in a constant-speed region without the use of a position sensor while enabling stopping control and control in a low-velocity region. When the moving velocity of a movable element is faster than a prescribed velocity that is within a range wherein the movable element can be moved by means of a prescribed sensorless vector control synchronously with the movement of a magnetic field generated by an armature, the sensorless vector control is used to control the current flowing through the armature. When the moving velocity of the movable element is slower than the prescribed velocity, with respect to the d-q coordinate, wherein the direction of the magnetic flux created by the magnetic field is the d-axis and the phase that leads by π/2 with respect to the d-axis is the q-axis, a d-axis armature current and a q-axis armature current are controlled such that a d-axis electrical angle that corresponds to a position command is created, a current flows through the d-axis armature, and a current does not flow in the q-axis armature.
More Like This:
| JPS5795104 | POWER FEEDING UNIT FOR LINEAR MOTOR |
| JPH01162279 | CONTROL CIRCUIT FOR MAGNETIC DISK DEVICE |
Inventors:
NOMURA YUKI (JP)
Application Number:
PCT/JP2009/064617
Publication Date:
March 04, 2010
Filing Date:
August 21, 2009
Export Citation:
Assignee:
THK CO LTD (JP)
NOMURA YUKI (JP)
NOMURA YUKI (JP)
International Classes:
H02P25/06
Foreign References:
| JP2004023936A | 2004-01-22 | |||
| JP2004329604A | 2004-11-25 | |||
| JPS62290385A | 1987-12-17 |
Attorney, Agent or Firm:
ISHIKAWA YASUO (JP)
Yasuo Ishikawa (JP)
Yasuo Ishikawa (JP)
Download PDF:
Previous Patent: LASER-WELDED SEALED PACKAGE AND SEALING METHOD THEREFOR
Next Patent: POLYOLEFIN RESIN COMPOSITION
Next Patent: POLYOLEFIN RESIN COMPOSITION